Brother Sewing Machine KE 430FX User Manual

INSTRUCTION  
MANUAL  
KE-430FX  
KE-430FS  
BE-438FX  
Please read this manual before using the machine.  
Please keep this manual within easy reach for quick reference.  
ELECTRONIC DIRECT DRIVE LOCKSTITCH BAR TACKER  
ELECTRONIC DIRECT DRIVE LOCKSTITCH BUTTON SEWER  
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SAFETY INSTRUCTIONS  
1. Safety indications and their meanings  
This instruction manual and the indications and symbols that are used on the machine itself are provided in order to ensure  
safe operation of this machine and to prevent accidents and injury to yourself or other people.  
The meanings of these indications and symbols are given below.  
Indications  
The instructions which follow this term indicate situations where failure to follow the  
instructions will result in death or serious injury.  
DANGER  
The instructions which follow this term indicate situations where failure to follow the  
instructions could cause injury when using the machine or physical damage to equipment  
and surroundings.  
CAUTION  
Symbols  
This symbol ( ) indicates something that you should be careful of. The picture inside the triangle  
indicates the nature of the caution that must be taken.  
(For example, the symbol at left means “beware of injury”.)  
・・・・  
This symbol ( ) indicates something that you must not do.  
・・・・・  
This symbol (  
nature of the thing that must be done.  
) indicates something that you must do. The picture inside the circle indicates the  
・・・・・  
(For example, the symbol at left means “you must make the ground connection”.)  
KE-430FX/KE-430FS, BE-438FX  
i
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2. Notes on safety  
DANGER  
Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet  
before opening the face plate of the control box. Touching areas where high voltages are present can result in  
severe injury.  
CAUTION  
Environmental requirements  
Use the sewing machine in an area which is free from  
sources of strong electrical noise such as electrical  
line noise or static electric noise.  
Sources of strong electrical noise may cause  
problems with correct operation.  
The ambient temperature should be within the range  
of 5°C to 35°C during use.  
Temperatures which are lower or higher than this  
may cause problems with correct operation.  
The relative humidity should be within the range of  
45% to 85% during use, and no dew formation should  
occur in any devices.  
Excessively dry or humid environments and dew  
formation may cause problems with correct operation.  
Any fluctuations in the power supply voltage should  
be within ±10% of the rated voltage for the machine.  
Voltage fluctuations which are greater than this may  
cause problems with correct operation.  
The power supply capacity should be greater than the  
requirements for the sewing machine’s power  
consumption.  
In the event of an electrical storm, turn off the power  
and disconnect the power cord from the wall outlet.  
Lightning may cause problems with correct operation.  
Insufficient power supply capacity may cause  
problems with correct operation.  
Installation  
Machine installation should only be carried out by a  
qualified technician.  
All cords should be secured at least 25 mm away  
from any moving parts. Furthermore, do not  
excessively bend the cords or secure them too firmly  
with staples, otherwise there is the danger that fire or  
electric shocks could occur.  
Contact your Brother dealer or a qualified electrician  
for any electrical work that may need to be done.  
The sewing machine weighs approximately 57 kg.  
The installation should be carried out by two or more  
people.  
Install the safety covers to the machine head and  
motor.  
If using a work table which has casters, the casters  
should be secured in such a way so that they cannot  
move.  
Do not connect the power cord until installation is  
complete, otherwise the machine may operate if the  
foot switch is depressed by mistake, which could  
result in injury.  
Be sure to wear protective goggles and gloves when  
handling the lubricating oil and grease, so that they  
do not get into your eyes or onto your skin, otherwise  
inflammation can result.  
Furthermore, do not drink the oil or eat the grease  
under any circumstances, as they can cause vomiting  
and diarrhoea.  
Hold the machine head with both hands when tilting it  
back or returning it to its original position.  
Furthermore, after tilting back the machine head, do  
not push the face plate side or the pulley side from  
above, as this could cause the machine head to  
topple over, which may result in personal injury or  
damage to the machine.  
Keep the oil out of the reach of children.  
Be sure to connect the ground. If the ground  
connection is not secure, you run a high risk of  
receiving a serious electric shock, and problems with  
correct operation may also occur.  
KE-430FX/KE-430FS, BE-438FX  
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ii  
CAUTION  
Sewing  
This sewing machine should only be used by  
operators who have received the necessary training  
in safe use beforehand.  
If using a work table which has casters, the casters  
should be secured in such a way so that they cannot  
move.  
The sewing machine should not be used for any  
applications other than sewing.  
Attach all safety devices before using the sewing  
machine. If the machine is used without these  
devices attached, injury may result.  
Be sure to wear protective goggles when using the  
machine.  
If goggles are not worn, there is the danger that if a  
needle breaks, parts of the broken needle may enter  
your eyes and injury may result.  
Do not touch any of the moving parts or press any  
objects against the machine while sewing, as this  
may result in personal injury or damage to the  
machine.  
Turn off the power switch at the following times,  
otherwise the machine may operate if the foot switch  
is depressed by mistake, which could result in injury.  
If an error occurs in machine operation, or if abnormal  
noises or smells are noticed, immediately turn off the  
power switch. Then contact your nearest Brother  
dealer or a qualified technician.  
When replacing the needle and bobbin  
When not using the machine and when leaving the  
machine unattended  
If the machine develops a problem, contact your  
nearest Brother dealer or a qualified technician.  
Use threading mode or turn off the power first in order  
to carry out threading.  
Cleaning  
Turn off the power switch before carrying out  
cleaning, otherwise the machine may operate if the  
foot switch is depressed by mistake, which could  
result in injury.  
Be sure to wear protective goggles and gloves when  
handling the lubricating oil and grease, so that they  
do not get into your eyes or onto your skin, otherwise  
inflammation can result.  
Furthermore, do not drink the oil or eat the grease  
under any circumstances, as they can cause vomiting  
and diarrhoea.  
Keep the oil out of the reach of children.  
Maintenance and inspection  
Maintenance and inspection of the sewing machine  
should only be carried out by a qualified technician.  
Hold the machine head with both hands when tilting it  
back or returning it to its original position.  
Furthermore, after tilting back the machine head, do  
not push the face plate side or the pulley side from  
above, as this could cause the machine head to  
topple over, which may result in personal injury or  
damage to the machine.  
Ask your Brother dealer or a qualified electrician to  
carry out any maintenance and inspection of the  
electrical system.  
Turn off the power switch and disconnect the power  
cord from the wall outlet at the following times,  
otherwise the machine may operate if the foot switch  
is depressed by mistake, which could result in injury.  
Use only the proper replacement parts as specified  
by Brother.  
If any safety devices have been removed, be  
absolutely sure to re-install them to their original  
positions and check that they operate correctly before  
using the machine.  
When carrying out inspection, adjustment and  
maintenance  
When replacing consumable parts such as the  
rotary hook  
Any problems in machine operation which result from  
unauthorized modifications to the machine will not be  
covered by the warranty.  
If the power switch needs to be left on when carrying  
out some adjustment, be extremely careful to observe  
all safety precautions.  
KE-430FX/KE-430FS, BE-438FX  
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iii  
3. Warning labels  
The following warning labels appear on the sewing machine.  
Please follow the instructions on the labels at all times when using the machine. If the labels have been removed or are  
difficult to read, please contact your nearest Brother dealer.  
1
*Safety devices  
2
Eye guard  
Finger guard  
DT solenoid cover  
Thread take-up cover  
Side cover  
Rear cover, etc.  
Be sure to connect the ground. If  
the ground connection is not  
5
secure, you run a high risk of  
receiving a serious electric shock,  
and  
problems  
with  
correct  
operation may also occur.  
Direction of operation  
6
7
Be careful to avoid injury from the moving thread  
take-up.  
Do not hold, otherwise  
problems with  
3
4
operation or injury may  
occur.  
Be careful not to get your hands caught when  
returning the machine head to its original position  
after it has been tilted.  
8
KE-430FX/KE-430FS, BE-438FX  
iv  
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Thread take-up cover  
Eye guard  
Finger guard  
3162B  
Rear cover  
DT solenoid  
cover  
Side cover  
Oil tank  
2506B  
3163B  
KE-430FX/KE-430FS, BE-438FX  
v
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CONTENTS  
5. USING THE OPERATION PANEL  
1. NAMES OF MAJOR PARTS ................ 1  
2. SPECIFICATIONS ................................ 2  
2-1. Machine specifications ................................... 2  
2-2. List of Sewing Patterns (KE-430FXFS) ........ 3  
2-3. List of Sewing Patterns (BE-438FX)............... 8  
(BASIC OPERATIONS)........................34  
5-1. Name and function of each operation panel  
item .................................................................34  
5-2. Program setting method..................................36  
5-3. Copying programs...........................................40  
5-4. Checking the sewing pattern  
3. INSTALLATION....................................11  
(KE-430FXFS)...............................................41  
5-5. Checking the sewing pattern  
3-1. Table processing diagram .............................. 11  
3-2. Installing the control box................................. 12  
3-3. Installing the oiler............................................ 12  
3-4. Installing the machine head............................ 13  
3-5. Installing the operation panel ......................... 14  
3-6. Installing the cotton stand............................... 15  
3-7. Installing the button tray (BE-438FX) ............. 15  
3-8. Installing the eye guard .................................. 15  
3-9. Connecting the cords...................................... 16  
3-10. Connecting the ground wire ......................... 19  
3-11. Installing the rear cover ................................ 20  
3-12. Lubrication.................................................... 21  
3-13. Connecting the power cord .......................... 22  
3-14. Checking the machine head switch.............. 25  
3-15. Starting up .................................................... 25  
(BE-438FX) ...................................................42  
5-6. Correcting the upper thread tension  
<For KE-430FX and BE-438FX> ....................43  
6. USING THE OPERATION PANEL  
(ADVANCED OPERATIONS)...............44  
6-1. Setting memory switches................................44  
6-2. List of memory switches..................................45  
6-3. Using the lower thread counter.......................47  
6-4. Using the production counter..........................48  
6-5. Using cycle programs .....................................49  
6-6. Direct selection ...............................................53  
6-7. Resetting all settings to their defaults.............54  
7. SEWING ...............................................55  
4. PREPARATION BEFORE SEWING.....26  
7-1. Sewing ............................................................55  
7-2. Changing sewing conditions ...........................56  
4-1. Installing the needle........................................... 26  
4-2. Threading the upper thread............................ 26  
4-3. Winding the lower thread................................ 28  
4-4. Installing the bobbin case............................... 29  
4-5. Thread tension................................................ 29  
4-5-1. Lower thread tension........................... 29  
4-5-2. Upper thread tension........................... 30  
4-6. Thread nipper device  
8. MAINTENANCE....................................57  
8-1. Cleaning the rotary hook.................................57  
8-2. Cleaning the control box air inlet ports ...........58  
8-3. Draining the oil................................................58  
8-4. Cleaning the eye guard...................................58  
8-5. Checking the needle .......................................58  
8-6. Lubrication.......................................................58  
8-7. Applying grease  
<KE-430FX-03, -0K, -0F>............................... 31  
4-7. Inserting the button (BE-438FX)..................... 33  
4-8. Adjusting the button clamp (BE-438FX)......... 33  
4-9. Installing the accessory spring (BE-438FX) ... 33  
(Work clamp: KE-430 FXFS).........................59  
8-8. Applying grease  
(When “GREASEUP” appears).......................59  
KE-430FX/KE-430FS, BE-438FX  
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9. STANDARD ADJUSTMENT.................63  
9-1. Standard thread tension ................................. 63  
9-1-1. Upper and lower thread tension........... 63  
9-1-2. Thread take-up spring.......................... 64  
9-1-3. Arm thread guide C.............................. 65  
9-1-4. Needle bar bush thread guide D.......... 65  
9-2. Adjusting the needle bar height...................... 65  
9-3. Adjusting the needle bar lift amount and the  
driver needle guard......................................... 66  
9-4. Adjusting the needle clearance ...................... 66  
9-5. Adjusting the shuttle race thread guide.......... 67  
9-6. Rotary hook lubrication amount...................... 67  
9-7. Replacing the movable knife and fixed knife.. 68  
9-8. Adjusting the work clamp lift amount  
(KE-430 FXFS) ............................................. 69  
9-9. Adjusting the button clamp lift amount  
(BE-438FX)..................................................... 69  
9-10. Adjusting the holding pressure  
(BE-438FX)..................................................... 70  
9-11. Adjusting the position of the button clamp  
(BE-438FX)................................................... 70  
9-12. Adjusting the thread wiper............................ 70  
9-13. Checking the machine head switch.............. 71  
10. TABLE OF ERROR CODES...............72  
11. TROUBLESHOOTING........................76  
12. 7-SEGMENT DISPLAY LIST..............79  
KE-430FX/KE-430FS, BE-438FX  
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1. NAMES OF MAJOR PARTS  
1. NAMES OF MAJOR PARTS  
3164B  
BE-438FX  
(1) Power switch  
Safety devices  
(2) Control box  
(3) SD card slot  
(10) Finger guard  
(11) Eye guard  
(4) Operation panel  
(5) Foot switch  
(12) Thread take-up cover  
(13) Rear cover  
(14) Side cover  
(15) DT solenoid cover  
(6) Work clamp (KE-430FXFS)  
(7) Button clamp (BE-438FX)  
(8) Pulley  
(9) Cotton stand  
KE-430FX/KE-430FS, BE-438FX  
1
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2. SPECIFICATIONS  
2. SPECIFICATIONS  
2-1. Machine specifications  
3187B  
KE-430FX  
KE-430FS  
BE-438FX  
Electronic direct drive lockstitch bar tacker Electronic direct drive lockstitch button sewer  
Single needle lock stitch  
Stitch formation  
Maximum sewing speed  
Pattern size (X x Y)  
3,200 sti/min  
2,700 sti/min  
40 x 30 mm max.  
6.4 x 6.4 mm max.  
Dimensions of buttons  
that can be sewn  
Outer diameter of button 8 - 30 mm (*1)  
Feed mechanism  
Stitch length  
Y-θ intermittent feed mechanism (pulse-motor driven mechanism)  
0.05 - 12.7 mm 0.05 – 6.4 mm  
Refer to List of Sewing Patternsfor the number of stitches in sewing patterns which  
Number of stitches  
have already been entered.  
Maximum stitch number  
Work clamp lifter  
Approx. 5,000 stitches (1 pattern)  
Pulse-motor driven mechanism  
Work clamp height  
Button clamp height  
17 mm max.  
13 mm max.  
Hook  
Shuttle hook (shuttle hook 2, optional)  
Shuttle hook  
Semi dry  
Lubrication method  
Digital tension set  
Thread wiper device  
Thread trimmer device  
Semi dry  
Minimum lubrication  
Option  
Standard equipment  
Standard equipment  
Standard equipment  
Standard equipment  
3,5 specifications:  
-03, -0K, -0F specifications:  
Standard equipment;  
Thread nipper device  
Option  
option  
-05 specifications: Option  
Data storage method  
Data recording media  
Number of cycle programs  
Flash memory (Any sewing pattern can be added using SD card) (*2)  
SD card (*2)  
Up to 30 can be registered (up to 50 steps each)  
89 sewing patterns  
are set already  
64 sewing patterns  
are set already  
Number of stored data  
(Up to a maximum of 512 additional types of sewing patterns. Total number of stitches of  
stored data which can be added is within 500,000.) (*3)  
Motor  
AC servo motor 550 W  
Machine head: approx. 57 kg, Operation panel: approx. 0.4 kg  
Control box: 9 kg  
Weights  
Single-phase 100V / 220V, 3-phase 220V / 380V / 400V  
Power source  
(For single-phase 100 V and three-phase 380 V/400 V, the trans box is required.)  
*1 Use the optional button clamp B (S03634-101) for diameters of 20 mm or greater.  
*2 No guarantees of operation can be given for any media.  
*3 The number of sewing patterns and the number of stitches that can be recorded will vary depending on the number of  
stitches in each sewing pattern.  
KE-430FX/KE-430FS, BE-438FX  
2
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2. SPECIFICATIONS  
2-2. List of Sewing Patterns (KE-430FXFS)  
The sewing patterns shown below have been preset into the sewing machine and can be selected according to specifications.  
(Any sewing pattern is available as long as it is within the work clamp and feed plate in size.)  
Use the work clamp and feed plate that match the respective sewing pattern selected.  
The sewing size is the length when the enlargement/reduction ratio is 100%.  
For medium-weight materials (-03)  
Tacking size (mm)  
Tacking size (mm)  
No. of  
stitches  
No. of  
stitches  
No.  
1
Pattern  
No.  
65  
Pattern  
Length  
Width  
Length  
Width  
42  
31  
29  
21  
35  
42  
28  
35  
30  
16  
2
43  
32  
30  
22  
36  
43  
29  
36  
90  
16  
2
4
16  
10  
7
2
2
2
2
2
2
2
2
66  
67  
68  
69  
70  
71  
72  
89  
16  
10  
7
2
2
2
2
2
2
2
3
5
8
13  
15  
20  
21  
64  
10  
10  
7
10  
10  
7
7
7
16  
24  
For heavy-weight materials (-05)  
Tacking size (mm)  
No.  
Tacking size (mm)  
No. of  
stitches  
No. of  
stitches  
No.  
2
Pattern  
Pattern  
Length  
Width  
Length  
Width  
42  
35  
30  
35  
43  
42  
20  
3
18  
19  
62  
63  
78  
79  
56  
64  
42  
35  
43  
36  
24  
3
3
20  
16  
16  
16  
24  
3
3
3
3
3
24  
20  
20  
20  
20  
3
3
3
3
3
6
14  
16  
17  
KE-430FX/KE-430FS, BE-438FX  
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3
2. SPECIFICATIONS  
For heavy-weight materials (-05)  
Tacking size (mm)  
No.  
Tacking size (mm)  
No. of  
stitches  
No. of  
stitches  
No.  
80  
Pattern  
Pattern  
Length  
Width  
Length  
Width  
31  
36  
44  
16  
3
83  
84  
85  
43  
57  
65  
24  
3
81  
82  
16  
16  
3
3
24  
24  
3
3
For knitted materials (-0K) and foundation garments (-0F)  
Tacking size (mm)  
Tacking size (mm)  
No. of  
stitches  
No. of  
stitches  
No.  
7
Pattern  
No.  
73  
Pattern  
Length  
Width  
Length  
Width  
28  
21  
14  
28  
22  
15  
8
2
29  
22  
15  
29  
23  
8
2
9
7
7
8
8
8
2
2
2
2
2
74  
75  
7
7
8
8
2
2
2
2
22  
31*  
32*  
33*  
76*  
77*  
*
The sewing start and sewing end are in the middle of the pattern.  
Straight bar tacking  
Vertical zigzag stitching  
Tacking size (mm)  
Tacking size (mm)  
No. of  
stitches  
No. of  
stitches  
No.  
10  
Pattern  
No.  
Pattern  
Length  
Width  
Length  
Width  
21  
28  
28  
35  
42  
45  
10  
0.3  
44  
46  
9
15  
11  
12  
23  
24  
25  
10  
20  
25  
25  
25  
0.3  
0.3  
0.3  
0.3  
0.3  
45  
70  
9
25  
KE-430FX/KE-430FS, BE-438FX  
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4
2. SPECIFICATIONS  
Vertical bar tacking  
Vertical straight bar tacking  
No. of  
Tacking size (mm)  
Tacking size (mm)  
No. of  
stitches  
No.  
26  
Pattern  
No.  
28  
Pattern  
stitches  
Length  
Width  
Length  
Width  
28  
35  
3
10  
19  
0.3  
10  
27  
40  
3
3
10  
16  
29  
30  
21  
28  
0.3  
0.3  
10  
10  
32  
41  
36  
3
16  
46  
27  
0.3  
20  
42  
44  
3
20  
47  
44  
0.3  
25  
43  
68  
3
24  
KE-430FX/KE-430FS, BE-438FX  
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5
2. SPECIFICATIONS  
Crescent bar tacking  
Tacking size (mm)  
Tacking size (mm)  
No. of  
stitches  
No. of  
stitches  
No.  
34  
Pattern  
No.  
Pattern  
Length  
Width  
Length  
Width  
35  
58  
57  
12  
7
37  
57  
53  
53  
7
12  
35  
36  
12  
7
38  
39  
7
7
10  
10  
7
12  
Crossed tacking  
Crossed stitching  
No. of  
Tacking size (mm)  
Tacking size (mm)  
No. of  
stitches  
No.  
48  
Pattern  
No.  
50  
Pattern  
stitches  
Length  
Width  
Length  
Width  
70  
10  
10  
84  
16  
16  
49  
93  
9.6  
9.6  
51  
105  
30  
26  
KE-430FX/KE-430FS, BE-438FX  
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6
2. SPECIFICATIONS  
L-pattern tacking  
Tacking size (mm)  
Tacking size (mm)  
No. of  
stitches  
No. of  
stitches  
No.  
52  
Pattern  
No.  
Pattern  
Length  
Width  
Length  
Width  
60  
78  
11.3  
11.2  
53  
60  
78  
11.3  
11.2  
54  
15.3  
15.2  
55  
15.3  
15.2  
Circular stitching  
Tacking size (mm)  
Tacking size (mm)  
No. of  
stitches  
No. of  
stitches  
No.  
56  
Pattern  
No.  
Pattern  
Length  
Width  
Length  
Width  
106  
116  
127  
9
9
59  
104  
114  
124  
10  
10  
57  
58  
9
9
9
9
60  
61  
10  
10  
10  
10  
For eyelet buttonhole  
No. of  
Tacking size (mm)  
No.  
86  
Pattern  
stitches  
Length  
Width  
21  
6
2
87  
88  
28  
35  
6
6
2
2
If you want to sew a sewing pattern other than standard sewing patterns, you can create your original pattern using the  
PS-300B. Consult with your local Brother sales office for details.  
Note when creating additional sewing patterns  
When sewing data with a small number of stitches (15 stitches or less) is sewn repeatedly (short cycle operation), the  
upper shaft motor may overheat and the “E150” error code may be generated.  
KE-430FX/KE-430FS, BE-438FX  
7
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2. SPECIFICATIONS  
2-3. List of Sewing Patterns (BE-438FX)  
The sewing patterns shown below have been preset into the sewing machine. Any sewing pattern can be selected as long as  
the needle will drop down into the holes of the buttons.  
When sewing patterns that do not have crossover stitches, the thread is trimmed after sewing of one side is completed, and  
then the other side is sewn.  
No. of  
crossover  
stitches  
Sewing size (mm)  
No. of holes  
in button  
No. of  
threads  
No. of  
stitches  
No.  
1
Pattern  
X
Y
6
6
1
12  
12  
14  
14  
16  
18  
22  
26  
11  
12  
16  
18  
21  
27  
21  
27  
18  
19  
22  
23  
25  
27  
31  
*1  
*1  
54  
2
8
8
55  
3
3.4  
0
10  
4
12  
2
*2  
*2  
*1  
16  
5
6
20  
6
56  
7
*3  
*3  
*3  
*3  
*3  
*3  
*3  
*1  
6
0
3.4  
10  
23  
8
12  
5-5-5  
7-7-7  
5-5-5  
7-7-7  
6-6  
6-6  
8-8  
8-8  
8-8  
10-10  
12-12  
9
24  
25  
26  
3
2.6  
2.4  
57  
10  
1
*1  
1
58  
11  
4
3.4  
3.4  
1
12  
13  
27  
3
1
1
*1 Use for buttons with small holes.  
*2 Check that the diameter of the holes in the buttons is 2 mm or greater before using the programs.  
*3 Do not use the button lifter spring.  
KE-430FX/KE-430FS, BE-438FX  
8
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2. SPECIFICATIONS  
No. of  
crossover  
stitches  
Sewing size (mm)  
No. of holes  
in button  
No. of  
threads  
No. of  
stitches  
No.  
Pattern  
X
Y
*4  
*5  
*4  
*5  
*4  
*5  
*4  
*5  
6-6  
6-6  
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
24  
24  
28  
28  
32  
32  
36  
36  
17  
18  
21  
22  
26  
18  
19  
22  
23  
26  
27  
31  
24  
24  
28  
28  
32  
32  
14  
36  
28  
37  
15  
38  
29  
39  
8-8  
8-8  
10-10  
10-10  
12-12  
12-12  
6-5  
*1  
59  
16  
6-5  
*1  
8-7  
60  
17  
8-7  
30  
10-9  
6-6  
4
3.4  
3.4  
*1  
*1  
*1  
61  
18  
6-6  
8-8  
62  
19  
8-8  
10-10  
10-10  
12-12  
6-6  
63  
31  
45  
*4  
*5  
*4  
*5  
*4  
*5  
20  
40  
32  
41  
33  
42  
6-6  
8-8  
8-8  
10-10  
10-10  
*1 Use for buttons with small holes.  
*4 When sewing of one side is completed, the button clamp rises and the thread is trimmed. To finish sewing, press the foot  
switch until sewing of the other side starts, or press the foot switch again after sewing of the other side is completed.  
*5 When sewing of one side is completed, the thread will be trimmed without the button clamp rising, and then the other  
side will be sewn.  
KE-430FX/KE-430FS, BE-438FX  
9
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2. SPECIFICATIONS  
No. of  
crossover  
stitches  
Sewing size (mm)  
No. of holes  
in button  
No. of  
threads  
No. of  
stitches  
No.  
Pattern  
X
Y
*1  
*3  
6-6  
6-6  
1
1
1
0
0
0
0
1
1
1
1
18  
19  
27  
24  
24  
32  
32  
19  
23  
27  
31  
3.4  
64  
21  
34  
22  
43  
35  
*3  
10-10  
6-6  
*3*4  
*3*5  
*3*4  
*3*5  
3.4  
2.4  
6-6  
4
10-10  
10-10  
6-7  
44  
46  
47  
48  
49  
8-9  
3.4  
3.4  
10-11  
12-13  
*1 Use for buttons with small holes.  
*3 Do not use the button lifter spring.  
*4 When sewing of one side is completed, the button clamp rises and the thread is trimmed. To finish sewing, press the foot  
switch until sewing of the other side starts, or press the foot switch again after sewing of the other side is completed.  
*5 When sewing of one side is completed, the thread will be trimmed without the button clamp rising, and then the other  
side will be sewn.  
For shank button  
Sewing size (mm)  
No. of  
stitches  
No.  
50  
Pattern  
No. of threads  
6
X
Y
0
12  
14  
16  
18  
51  
52  
53  
8
3.4  
10  
12  
Note when creating additional sewing patterns  
When sewing data with a small number of stitches (15 stitches or less) is sewn repeatedly (short cycle operation), the  
upper shaft motor may overheat and the “E150” error code may be generated.  
KE-430FX/KE-430FS, BE-438FX  
10  
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3. INSTALLATION  
3. INSTALLATION  
CAUTION  
Machine installation should only be carried out by a  
qualified technician.  
All cords should be secured at least 25 mm away  
from any moving parts. Furthermore, do not  
excessively bend the cable or secure it too firmly  
staples, otherwise there is the danger that fire or  
electric shocks could occur.  
Contact your Brother dealer or a qualified electrician  
for any electrical work that may need to be done.  
The sewing machine head weighs approximately 57  
kg. The installation should be carried out by two or  
more people.  
Be sure to connect the ground. If the ground  
connection is not secure, you run the risk of receiving  
a serious electric shock, and problems with correct  
operation may also occur.  
Do not connect the power cord until installation is  
complete, otherwise the machine may operate if the  
foot switch is depressed by mistake, which could  
result in injury.  
Install the safety covers to the machine head and  
motor.  
Hold the machine head with both hands when tilting it  
back or returning it to its original position.  
Furthermore, after tilting back the machine head, do  
not push the face plate side or the pulley side from  
above, as this could cause the machine head to  
topple over, which may result in personal injury or  
damage to the machine.  
3-1. Table processing diagram  
• The thickness of the table should be at least 40 mm, and it should be strong enough to bear the weight and vibration of the  
sewing machine.  
• Check that the control box is at least 10 mm away from the leg. If the control box and the leg are too close together, it may  
result in incorrect sewing machine operation.  
2453B  
11  
KE-430FX/KE-430FS, BE-438FX  
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3. INSTALLATION  
3-2. Installing the control box  
Remove the six screws (1), and then  
remove the control box cover (2).  
(3) Control box  
(4) Bolts [4 pcs]  
(5) Plain washers [4 pcs]  
(6) Spring washers [4 pcs]  
(7) Nuts [4 pcs]  
2280B  
3-3. Installing the oiler  
Before installing the oiler, provisionally  
install the rubber cushion (1) and the  
hinge holder (2) to the table with the two  
bolts (3).  
(4) Dust oiler setting plate  
(5) Dust oiler  
(6) Screws [2 pcs]  
(7) Wood screws [2 pcs]  
(8) Oiler  
Center  
* Install the dust oiler setting plate (4) so  
that the hole (9) in the dust oiler setting  
plate (4) is in the center of the hole (10)  
in the table for installing the oiler (8) as  
shown in figure [A].  
NOTE:  
• Make sure that the dust oiler setting  
plate (4) does not interfere with the  
hinge holder (2).  
2281B  
KE-430FX/KE-430FS, BE-438FX  
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3. INSTALLATION  
3-4. Installing the machine head  
(1) Pins [2 pcs]  
(2) Set screws [2 pcs]  
(3) Rubber cushion assembly [2 pcs]  
Place the machine head gently on top of  
the table.  
NOTE:  
• Be careful not to clamp any cords  
between the machine head and the  
table.  
• When holding the machine head, do  
not hold it by the pulse motor or the  
solenoid, otherwise it may damage the  
pulse motor or solenoid.  
Pulse motor  
Solenoid  
Approx. 20mm  
Approx. 20mm  
3166B  
(4) Hinge holders [2 pcs]  
(5) Bolts [4 pcs]  
(6) Plain washers [4 pcs]  
(7) Spring washers [4 pcs]  
(8) Nuts [4 pcs]  
(9) Rubber cushions [3 pcs]  
(10) Collar [3 pcs]  
(11) Plain washers [3 pcs]  
(12) Screws [3 pcs]  
(13) Felt  
(14) Oil tube  
Pass the felt (13) and the oil tube (14)  
through the hole in the dust oiler setting  
plate (15) into the oiler (16).  
3167B  
13  
KE-430FX/KE-430FS, BE-438FX  
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3. INSTALLATION  
1. Remove the two screws (17), and  
then temporarily remove the machine  
head switch (18).  
2. Use the two screws (17) which were  
removed to install the machine head  
switch (18) in the position shown in  
the illustration.  
3. Check that the machine head switch  
as turned on as shown in figure [A].  
*
If the machine head switch is not  
turned on, adjust the installation  
position while referring to “3-14.  
Checking the machine head switch”.  
2284B  
2285B  
3-5. Installing the operation panel  
(1) Operation panel  
(2) Wood screws [4 pcs]  
* Pass the panel cord through the  
hole in the table, and then insert it  
into the control box through the  
hole in the side of the control box.  
(3) Staples [3 pcs]  
2286B  
KE-430FX/KE-430FS, BE-438FX  
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14  
3. INSTALLATION  
3-6. Installing the cotton stand  
(1) Cotton stand  
NOTE:  
Securely tighten the nut (4) so that the  
two rubber cushions (2) and the  
washer (3) are securely clamped and  
so that the cotton stand (1) does not  
move.  
3636M  
3-7. Installing the button tray (BE-438FX)  
Install the button tray at  
convenient for operation.  
a
place  
(1) Button tray holder  
(2) Wood screws [2 pcs]  
(3) Button tray  
(4) Set screw  
4410Q  
3-8. Installing the eye guard  
CAUTION  
Attach all safety devices before using the sewing machine.  
If the machine is used without these devices attached, injury may result.  
(1) Eye guard assembly  
(2) Screws [2 pcs]  
2287B  
15  
KE-430FX/KE-430FS, BE-438FX  
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3. INSTALLATION  
3-9. Connecting the cords  
1. Gently tilt back the machine head.  
2. Pass the cord bundle through the hole  
in the work table.  
3. Loosen the two screws (1), and then  
open the cord presser plate (2) in the  
direction of the white arrow and pass  
the cord bundle through the opening.  
4. Securely connect the connectors as  
indicated in the table below.  
(Refer to following page.)  
NOTE:  
• Check that the connector is facing the  
correct way, and then insert it firmly  
until it locks into place.  
• Secure the cables with cable ties and  
cord clamps, while being careful not to  
pull on the connector.  
2288B  
(Continued on next page.)  
KE-430FX/KE-430FS, BE-438FX  
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16  
3. INSTALLATION  
< Main P. C. board >  
Lock the cord  
clamp securely.  
<Removal>  
Press  
the tab.  
<Securing>  
2289B  
Connection location on  
main P. C. board  
P17 (X-ENC)  
P18 (Y-ENC)  
P19 (P-ENC)  
P20 (T-ENC)  
P14 (HEAD-SW)  
P16 (HEAD-M)  
P2 (SOL1)  
Connectors  
Cord clamps  
X pulse motor encoder [5-pin] White  
Y pulse motor encoder [5-pin] Blue  
Work clamp pulse motor encoder 5-pin Black  
Thread nipper pulse motor encoder 5-pin Red  
Machine head switch [3-pin]  
(2)  
(2)  
(2)  
(2)  
(2)  
(2)  
(1)  
Machine head memory [6-pin]  
Thread trimmer solenoid [6-pin]  
Digital tension 4-pin  
P3 (SOL2)  
(1)  
/Tension release solenoid 4 -pin  
Thread clamp pulse motor [4-pin] Red  
X pulse motor [4-pin] White  
Y pulse motor [4-pin] Blue  
Work clamp pulse motor [4-pin] Black  
P4 (TPM)  
(1)  
(1)  
(1)  
(1)  
P21 (XPM)  
P22 (YPM)  
P23 (PPM)  
NOTE: Route the X, Y and work clamp pulse motor harnesses so that they do not touch the power supply P.C. board.  
17  
KE-430FX/KE-430FS, BE-438FX  
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3. INSTALLATION  
< Motor P. C. board >  
Lock the cord clamps  
(2) and (4) securely.  
2290B  
Connection location on  
motor P. C. board  
UVW)  
P11SYNC)  
P3 (PANEL)  
Cord clamps/  
cable ties  
(4)  
Connectors  
Upper shaft motor [4-pin]  
Synchronizer [10-pin]  
Operation panel [4-pin]  
(2) (3)  
(2) (3)  
5. Close the cord presser plate (2) in the direction of the white  
arrow, and secure it by tightening the two screws (1).  
NOTE:  
Close the cord presser plate (2) securely so that no  
foreign objects, insects or small animals can get inside the  
control box.  
6. Check that the cords do not get pulled, and then gently return  
the machine head to its original position.  
2291B  
KE-430FX/KE-430FS, BE-438FX  
18  
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3. INSTALLATION  
3-10. Connecting the ground wire  
CAUTION  
Be sure to connect the ground. If the ground connection is not secure, you run the risk of receiving a serious electric  
shock, and problems with correct operation may also occur.  
2292B  
(1) Ground wire from the machine head (Ground mark position)  
* The recommended tightening torque for the ground screws is 1.0±0.1 Nm.  
NOTE:  
Make sure that the ground connections are secure in order to ensure safety.  
19  
KE-430FX/KE-430FS, BE-438FX  
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3. INSTALLATION  
3-11. Installing the rear cover  
(1) Rear cover  
(2) Screws [4 pcs]  
NOTE:  
Be careful not to clamp the cords when  
installing the rear cover (1).  
3168B  
KE-430FX/KE-430FS, BE-438FX  
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20  
3. INSTALLATION  
3-12. Lubrication  
CAUTION  
Do not connect the power cord until lubrication has been completed, otherwise the machine may operate if the foot switch  
is depressed by mistake, which could result in injury.  
Be sure to wear protective goggles and gloves when handling the lubricating oil and grease, so that they do not get into  
your eyes or onto your skin, otherwise inflammation can result.  
Furthermore, do not drink the oil or eat the grease under any circumstances, as they can cause vomiting and diarrhoea.  
Keep the oil out of the reach of children.  
The sewing machine should always be lubricated and the oil  
supply replenished before it is used for the first time, and also  
after long periods of non-use.  
Use only the lubricating oil <Nippon Oil Corporation Sewing  
Lube 10N; VG10> specified by Brother.  
* If this type of lubricating oil is difficult to obtain, the recommended oil  
to use is <Exxon Mobil Essotex SM10; VG10>.  
1. Hold the base of the nozzle of the accessory oil tank (1), and  
use scissors to cut about half-way along the straight section  
(A) of the nozzle.  
2. Loosen and remove the nozzle, and then remove the seal  
(2).  
3. Tighten the nozzle.  
4. Open the oil feeding pocket cover (3).  
5. Insert the nozzle of the oil tank (1) deeply into the oil feeding  
pocket (4), and then add lubricating oil.  
6. Check that the oil level is between the upper reference line  
and the lower reference line in the oil gauge window (5).  
NOTE:  
• When the oil level drops below the lower reference line in the  
oil gauge window, be sure to add more oil. If the oil level drops  
below the lower reference line, problems with operation of the  
sewing machine such as seizing may occur.  
• Do not add oil so that the oil level goes above the upper  
reference line, otherwise the oil may spill out when the  
machine head is tilted back  
(Continued on next page.)  
Upper  
reference  
line  
Lower  
reference  
line  
2294B  
21  
KE-430FX/KE-430FS, BE-438FX  
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3. INSTALLATION  
7. Pour oil in through the two holes of the shuttle race base  
assembly so that the felt (6) is lightly moistened.  
NOTE:  
• The two pieces of felt (6) should normally project by 0 to 0.5  
mm from the hook race. Be careful not to push in the felt (6)  
when lubricating.  
• If there is no more oil on the felt (6) of the shuttle race base  
assembly, problems with sewing may result.  
2381B  
< When using the needle cooler (option)>  
If using the needle cooler (option) (1), fill it with silicon oil.  
2454B  
3-13. Connecting the power cord  
CAUTION  
Be sure to connect the ground. If the ground connection is not secure, you run a high risk of receiving a serious electric  
shock, and problems with correct operation may also occur.  
Connect cords that match the voltage  
specifications.  
< EU specifications>  
(1) Filter box  
(2) Screws [4 pcs]  
(3) Staples [7 pcs]  
(4) Power cord  
1. Attach an appropriate plug to the  
power cord (4). (The green and yellow  
wire is the ground wire.)  
2. Insert the power plug into  
properly-grounded electrical outlet.  
a
< Seen from underneath table >  
NOTE:  
• Take care when tapping in the staples  
(3) to make sure that they do not pierce  
the cords.  
• Do not use extension cords, otherwise  
machine operation problems may  
result.  
Control box  
Leg  
Green and yellow wire (ground wire)  
2353B  
KE-430FX/KE-430FS, BE-438FX  
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22  
3. INSTALLATION  
<200 V system >  
(1) Power switch  
(2) Screws [2 pcs]  
Operator  
4145M  
2347B  
(3) 3-pin power supply connector  
(4) Power cord  
(5) Staples [5 pcs]  
1. Attach an appropriate plug to the  
power cord (4). (The green and yellow  
wire is the ground wire.)  
2. Insert the power plug into  
properly-grounded electrical outlet.  
a
NOTE:  
• Take care when tapping in the staples  
(5) to make sure that they do not pierce  
the cords.  
• Do not use extension cords, otherwise  
machine operation problems may  
result.  
3. Use the six screws to tighten the cover  
of the control box. Check that none of  
the cords are being clamped by the  
cover at this time.  
Green and yellow wire  
(ground wire)  
23  
KE-430FX/KE-430FS, BE-438FX  
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3. INSTALLATION  
<100 V / 400 V system >  
(1) Power switch  
(2) Screws [2 pcs]  
Operator  
4145M  
2348B  
(3) Transformer box  
(4) Transformer box plates [2 pcs]  
(5) Screw [with washer]  
(6) 3-pin power supply connector  
(7) Staples [6 pcs]  
(8) Cord clamps [2 pcs]  
(9) Power cord  
1. Attach an appropriate plug to the  
power cord (9). (The green and yellow  
wire is the ground wire.)  
2. Insert the power plug into  
properly-grounded AC power supply.  
a
* The inside of the control box uses  
single-phase power.  
NOTE:  
• If the ground connection is not secure,  
electric shocks, operating errors or  
damage to electronic components such  
as P.C. boards may occur.  
• Take care when tapping in the staples  
(7) to make sure that they do not pierce  
the cords.  
• Do not use extension cords, otherwise  
machine operation problems may  
result.  
3. Use the six screws to tighten the cover  
of the control box. Check that none of  
the cords are being clamped by the  
cover at this time.  
Green and yellow wire  
(ground wire)  
2351B  
KE-430FX/KE-430FS, BE-438FX  
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24  
3. INSTALLATION  
3-14. Checking the machine head switch  
1. Turn on the power switch.  
2. Check that no error numbers appear on the operation panel.  
<If error [E050], [E051] or [E055] is displayed>  
If the machine head switch (1) is not turned on, error [E050],  
[E051] or [E055] will occur.  
Use the screw (2) to adjust the installation position of the  
machine head switch as shown in the illustration.  
2295B  
3-15. Starting up  
4421Q  
1. Turn on the power switch.  
The POWER indicator (3) will illuminate, and the model  
name will appear in the tension value display (4) and the  
specifications will appear in the section No. display (5).  
Specifications  
Display  
Medium-weight  
[
[
[
[
- 03]  
- 05]  
- 0K]  
- 0F]  
materials  
Heavy-weight  
materials  
Knitted materials  
Foundation  
garments  
After this, the program number will flash in the program No.  
display (6).  
2. Depress the foot switch (7) to the 2nd step.  
The feed mechanism will move to the home position and the  
work clamp / button clamp will rise.  
2339B  
2nd step  
2346B  
25  
KE-430FX/KE-430FS, BE-438FX  
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4. PREPARATION BEFORE SEWING  
4. PREPARATION BEFORE SEWING  
4-1. Installing the needle  
CAUTION  
Turn off the power switch before installing the needle, otherwise the machine may operate if the foot switch is depressed  
by mistake, which could result in injury.  
1. Loosen the set screw (1).  
2. Insert the needle (2) in a straight line as far as it will go,  
making sure that the long groove on the needle is at the  
front, and then securely tighten the screw (1).  
2300B  
4-2. Threading the upper thread  
Thread the upper thread correctly as shown in the illustration below.  
* When using threading mode for threading, the tension discs (1) will open so that the thread can be threaded more easily. (Refer  
to following page.)  
[When using the needle cooler (option)]  
[Two holes]  
Spun rayon yarn  
Synthetic thread  
[One hole]  
Approx. 40mm  
3169B  
KE-430FX/KE-430FS, BE-438FX  
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26  
4. PREPARATION BEFORE SEWING  
<Threading mode>  
Threading mode is safe because the sewing machine will not start even when the foot switch is depressed.  
Turn on the power switch.  
1
4421Q  
Press the THREAD/CLAMP key.  
2
All indicators switch off  
• The work clamp /button clamp will lower.  
2340B  
2389B  
THREAD/CLAMP indicator flashes  
Menu indicators switch off  
Threading the thread.  
3
Ending threading mode  
Press the THREAD/CLAMP key.  
• The work clamp/button clamp will return to where it was  
before threading mode was started.  
4
2390B  
THREAD/CLAMP indicator switches off  
27  
KE-430FX/KE-430FS, BE-438FX  
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4. PREPARATION BEFORE SEWING  
4-3. Winding the lower thread  
CAUTION  
Do not touch any of the moving parts or press any objects against the machine while winding the lower thread, as this may  
result in personal injury or damage to the machine.  
3170B  
1. Place the bobbin onto the bobbin winder shaft (1).  
2. Thread the thread as shown in the illustration, wind the  
thread around the bobbin several times, and then press the  
bobbin presser arm(2).  
3. Turn on the power switch.  
4. Depress the foot switch to the second step. The feed  
mechanism will move to the home position.  
5. Check that the needle is not touching the work clamp/button  
clamp, and then while pressing the ENTER key (3), depress  
the foot switch to the second step.  
6. Release the ENTER key (3) after the machine starts  
operating, and keep depressing the foot switch until the  
lower thread stops being wound onto the bobbin.  
(If you release the foot switch before winding is complete,  
and then depress it again while pressing the ENTER key (3),  
winding will start again.)  
7. Once winding of the set amount of lower thread (80 - 90% of  
the bobbin capacity) is completed, the bobbin presser arm  
(2) will return automatically.  
8. Remove the bobbin, hook the thread onto the knife (4), and  
then pull the bobbin in the direction of the arrow to cut the  
thread.  
3171B  
3172B  
2341B  
Adjusting the bobbin winding amount  
Loosen the screw (5) and move the bobbin presser (6).  
If the thread winds onto the bobbin unevenly  
Loosen the nut (7) and move the bobbin winder tension  
assembly (8) up and down to adjust.  
*
For case A, turn the bobbin winder tension assembly (8)  
clockwise (a), and for case B, turn it counterclockwise (b).  
Case A  
Case B  
3173B  
KE-430FX/KE-430FS, BE-438FX  
28  
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4. PREPARATION BEFORE SEWING  
4-4. Installing the bobbin case  
CAUTION  
Turn off the power switch before installing the bobbin case, otherwise the machine may operate if the foot switch is  
depressed by mistake, which could result in injury.  
2534Q  
30mm  
2535Q  
4433Q  
1. Pull the shuttle race cover (1) downward to open it.  
2. While holding the bobbin so that the thread winds to the right, insert the bobbin into the bobbin case.  
3. Pass the thread through the slot (2) and pull it out from the thread hole (3).  
4. Check that the bobbin turns in the direction of the arrow when the thread is pulled.  
5. Pass the thread through the lever thread hole (4), and then pull out approximately 30 mm of thread.  
6. Hold the latch on the bobbin case and insert the bobbin case into the rotary hook.  
4-5. Thread tension  
4-5-1. Lower thread tension  
Adjust the thread tension to the weakest possible tension by  
turning the thread tension nut (1) until the bobbin case will  
not drop by its own weight while the thread end coming out  
of the bobbin case is held.  
weaker stronger  
2536Q  
29  
KE-430FX/KE-430FS, BE-438FX  
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4. PREPARATION BEFORE SEWING  
4-5-2. Upper thread tension  
3174B  
Use the digital tension or the tension nut (2) to adjust the  
tension as appropriate for the material being sewn. (Refer  
to "Setting the tension value".)  
Furthermore, turn the tension nut (1) (sub-tension) to adjust  
the remaining length of upper thread to 35 - 40 mm, when  
the thread take-up lever is not used.  
Stronger  
Weaker  
Setting the tension value <For KE-430FX and BE-438FX>  
Press the key (2) or the  
tension value (4).  
key (3) to change the  
* The tension value which has been set will be applied the  
next time sewing is carried out.  
2345B  
2382B  
2383B  
[Reference thread tension]  
KE-430FXFS  
Use  
BE-438FX  
Medium-weight  
materials (-03)  
Knitted wear  
(-0K)  
#60 or  
equivalent  
#80 or  
Foundation  
garments (-0F)  
#60 or  
equivalent  
#60 or  
Heavy-weight  
materials (-05)  
Upper thread  
Lower thread  
#50 or equivalent  
#50 or equivalent  
#30 or equivalent #60 or equivalent  
#50 or equivalent #60 or equivalent  
equivalent  
0.8 - 1.2  
[80 - 120]*2  
equivalent  
Upper thread tension  
(N) [Tension value] *1  
Lower thread tension  
(N)  
1.2 – 1.8  
0.5 - 1.2  
[70 - 130]*2  
[50 - 150]*2  
0.2 - 0.3  
0.2 - 0.3  
0.1 - 0.4  
Pre-tension (N)  
Needle  
0.05 - 0.3  
DP x 5 #9 DP x 5 KN#11  
DP x 5 #14  
DPx17NY#19  
DPx17NY#12  
*1: For KE-430FX and BE-438FX.  
*2: This is the tension value when the pretension is 0.05 N.  
KE-430FX/KE-430FS, BE-438FX  
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30  
4. PREPARATION BEFORE SEWING  
[Guide to maximum sewing speed for KE-430FXFS]  
Max. sewing speed (sti/min)  
Use  
Standard hook  
3,200  
Large hook  
2,500  
8 layers of denim  
12 layers of denim  
Ordinary materials  
2,700  
2,700  
2,500  
For knitted materials and  
foundation garments  
2,500  
NOTE:  
The thread may break due to heat under some sewing conditions. If this happens, reduce the sewing speed, or use the  
needle cooler (option).  
4-6. Thread nipper device <KE-430FX-03, -0K, -0F>  
This is used to stop the thread from pulling out at the sewing start, and at times when skipped stitches might easily occur.  
The thread nipper device operates when memory switch no. 500 is set to "ON". However, some limitations apply. Refer to  
"6-2. List of memory switches" for details.  
* The default setting for this memory switch is "OFF".  
[Notes on use]  
1. When using the thread nipper device, turn the tension  
nut (1) (sub-tension) to adjust the upper thread trailing  
length to 35 - 38 mm.  
* Adjust the upper thread trailing length to less than 40  
mm after replacing the upper thread also.  
3175B  
2. If the upper thread trailing length is 40 mm or more, or if  
the upper thread tension is weak and the upper thread  
does not form a good seam at the first stitch, the end of  
the thread that is being held by the thread nipper may  
become wound around the seam.  
Furthermore, if using thick thread that is #30 or higher or  
if the thread trailing length is too long, an error [E691]  
may occur.  
In any of these cases, use scissors to cut the thread  
without pulling it up too hard.  
4475Q  
31  
KE-430FX/KE-430FS, BE-438FX  
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4. PREPARATION BEFORE SEWING  
3. For sewing patterns with a short bar tack length (10 mm  
or less), the end of the thread that is being held by the  
thread nipper may poke out from the seam on the  
underside of the material. It is recommended that you  
change the thread nipper setting to "OFF" for patterns  
such as these.  
(Front)  
4. If error [E690] or [E691] frequently occurs, remove the  
needle plate and remove any thread scraps from  
underneath the needle plate.  
(Back)  
Upper thread  
4487Q  
5. With the KE-430FX, the lower thread may poke out from the underside of the material on the 2nd stitch for some types of  
material and thread. If this happens, it is recommended that you use sewing patterns that are designed for use with the  
thread nipper device.  
Refer to "2-2. List of Sewing Patterns (KE-430FXFS)" for details of the sewing patterns.  
<Program No. Reference Table>  
Pattern No. for  
Specifications  
Standard pattern No.  
thread nipper device  
1
4
5
65  
66  
67  
68  
69  
70  
71  
72  
78  
79  
80  
81  
82  
83  
84  
85  
73  
74  
75  
76  
77  
8
For medium-weight  
materials (-03)  
13  
15  
20  
21  
2
3
6
14  
16  
17  
18  
19  
7
For heavy-weight materials  
(-05)  
9
For knitted wear (-0K)  
For foundation garments (-0F)  
22  
31  
32  
KE-430FX/KE-430FS, BE-438FX  
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32  
4. PREPARATION BEFORE SEWING  
4-7. Inserting the button (BE-438FX)  
1. Press the button clamp plate cam (1) to open the button  
holder (2).  
2. Insert the button, making sure that the button is facing  
the directing shown in the illustration, then release the  
button clamp plate cam (1).  
4115M  
4-8. Adjusting the button clamp (BE-438FX)  
1. Insert the button in the button clamp, and then confirm  
that the button is securely held by the clamp and that the  
button can be turned by hand.  
0.5 - 1.0mm  
2. Loosen the shoulder screw (1), while the button is held  
by the clamp. Move the adjusting plate (2) so that the  
space between the adjusting plate (2) and screw (3) is  
approximately 0.5 - 1.0 mm, then tighten the shoulder  
screw (1).  
2660Q  
4-9. Installing the accessory spring (BE-438FX)  
If you would like the button to be raised up more after it is  
sewn, install the accessory spring.  
1. Install the spring support (1) with the bolt (2).  
2. Install the spring (3) with the washer (4) and the screw  
(5).  
* Adjust so that the spring (3) is in the middle of the  
button.  
2308B  
33  
KE-430FX/KE-430FS, BE-438FX  
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5. USING THE OPERATION PANEL (BASIC OPERATIONS)  
5. USING THE OPERATION PANEL (BASIC OPERATIONS)  
5-1. Name and function of each operation panel item  
2395B  
(1) Power indicator  
Illuminates when the power is turned on.  
(2) CAUTION indicator  
Illuminates when an error occurs.  
(3) RESET key  
Used to reset errors.  
(4) TEST key  
Used to switch to test mode, or it can be used in combination with other keys to switch to other setting modes.  
(5) TEST indicator  
Illuminates when the TEST key (4) has been pressed.  
(6) THREAD/CLAMP key  
Used to switch to threading mode.  
(7) THREAD/CLAMP indicator  
This illuminates when the work clamp/button clamp is switched in threading mode or by using the SELECT key (14).  
(8) PATTERN No. indicator  
Illuminates when the SELECT key (14) is pressed to switch to the pattern number.  
(9) X-SCALE indicator  
Illuminates when the SELECT key (14) is pressed to switch to the X-scale setting.  
(10) Y-SCALE indicator  
Illuminates when the SELECT key (14) is pressed to switch to the Y-scale setting.  
(11) SPEED indicator  
Illuminates when the SELECT key (14) is pressed to switch to the sewing speed setting.  
KE-430FX/KE-430FS, BE-438FX  
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5. USING THE OPERATION PANEL (BASIC OPERATIONS)  
(12) COUNTER indicator  
Illuminates when the SELECT key (14) is pressed to switch to the lower thread or production counter setting.  
(13) SPLIT No. indicator  
Illuminates when the SELECT key (14) is pressed to show the split setting when split data (for specifying a pause while the  
program is running) exists.  
(14) SELECT key  
Used to switch the menu display (pattern No., X-scale and Y-scale, sewing speed, work clamp/button clamp lift amount,  
counter).  
(15) PROGRAM No. display  
This shows information such as program numbers.  
(16) Menu display  
Displays information such as menu setting values, memory switch settings and error codes.  
(17) Setting keys  
Used to change the value which is displayed in the PROGRAM No. display (15).  
(18) Setting keys  
Used to change the value which is displayed in the menu display (16).  
(19) TENSION key  
Used to switch to tension correction value display mode.  
(20) TENSION indicator  
Illuminates when in tension correction value display mode.  
(21) SECTION No. display  
Shows the section number when you select a pattern in which the upper thread tension changes while the pattern is being  
sewn.  
(22) TENSION display <For KE-430FX and BE-438FX>  
Shows the upper thread tension value.  
(23) Setting keys [+, -]  
Used to change the value which is displayed in the SECTION No. display (21).  
(24) Setting keys [  
Used to change the value which is displayed in the TENSION display (22).  
(25) ENTER key  
]
Used to accept the values which are displayed in places such as the menu display (16).  
(26) Function keys [F1, F2, F3, F4]  
Used to directly select program numbers and cycle program numbers.  
KE-430FX/KE-430FS, BE-438FX  
35  
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5. USING THE OPERATION PANEL (BASIC OPERATIONS)  
5-2. Program setting method  
Patterns, X-scale, Y-scale, sewing speed, slow start pattern and upper thread tension can be recorded into programs.  
When a program number is selected, the program which has been set for that number can then be sewn.  
Program numbers 1 to 89 (1 to 64 for the 438FX) have patterns preprogrammed into the program numbers with the same numbers  
as the pattern numbers, and these pattern numbers cannot be changed. All items in program numbers 200 to 999 can be set as  
desired by the user.  
Switch to program mode.  
While pressing the TEST key, press the SELECT key.  
1
The program number will be displayed in the  
PROGRAM No. display, and “Ptno” will be displayed in  
the menu display.  
If a pattern has been recorded in a program, the number  
for that pattern will be displayed in the TENSION  
display, and if no pattern has been recorded, “—“ will be  
displayed.  
2396B 2397B  
TEST indicator flashes, PTRN No. indicator illuminates  
Select the program number that you would like to Press the  
or  
key to set the program number that you  
2
change the parameters for.  
would like to record.  
Program numbers 1 to 89 (1 to 64 for the 438FX) have  
the following restrictions. If you would like to create your  
own programs using sewing patterns, use program  
numbers 200 to 999.  
For example, program  
number 200  
2398B  
Restrictions due to program numbers selected  
Program No.  
Pattern  
operation  
Patterns that can be Patterns with same number as program All patterns recorded in the sewing  
200 to 999  
1 to 89 (430FXFS), 1 to 64 (438FX)  
selection Not possible  
Can be recorded as desired  
recorded  
number already recorded  
machine  
(If program number 200 to 999 is selected)  
Record a pattern.  
3
Press the  
or  
key to change the pattern number,  
and then press the ENTER key to apply the change.  
2400B  
The setting ranges for other items will vary in  
accordance with the pattern which is recorded, so  
record the pattern first.  
If “---“ is recorded as the pattern number, that particular  
program will no longer have anything recorded.  
If the display is flashing, it means that no pattern number  
has been entered and applied. If you press the SELECT  
key or the TEST key, the changes to the program  
contents will be canceled.  
2399B  
KE-430FX/KE-430FS, BE-438FX  
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36  
5. USING THE OPERATION PANEL (BASIC OPERATIONS)  
Select the item to be changed.  
Press the SELECT key.  
4
2401B  
The selected parameter changes in the order shown in  
the illustration below each time the SELECT key is  
pressed.  
Pattern Æ X-scale Æ Y-scale Æ Sewing speed Æ Slow start patternÆ Upper thread tension  
Change the setting for the parameter.  
(Refer to “List of parameters” on the next page for details  
5
Press the  
setting.  
or  
key to change the parameter  
on parameter changes. )  
2382B 2383B  
The flashing display means that the parameter setting  
has not yet been applied.  
You can make the initial setting appear in the display  
by pressing the RESET key.  
2402B  
Apply the changed parameter setting.  
Press the ENTER key.  
6
The display will change from flashing to illuminated,  
and this means that the setting has been applied.  
If you press the SELECT key or the TEST key without  
pressing the ENTER key, you can cancel the  
parameter changes.  
2403B  
Repeat steps 4 to 6 above to record the settings for each parameter.  
7
8
9
If you would like to continue setting another program, repeat steps 2 to 7 above.  
Exit program mode.  
Press the TEST key.  
The display will return to the normal display.  
2404B  
TEST indicator switches off  
KE-430FX/KE-430FS, BE-438FX  
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5. USING THE OPERATION PANEL (BASIC OPERATIONS)  
<List of parameters>  
Parameter  
Setting range and initial value  
Display  
[For program numbers 1 to 89 (1 to 64 for the  
438FX)]  
The setting cannot be changed.  
[For program numbers 200 to 999]  
“---“, 1 to 89 (1 to 64 for the 438FX), additional  
recorded pattern numbers.  
Pattern  
Initial value  
2405B  
20% - 200%  
(Limited by available sewing area.)  
(Initial value is 100%.)  
* The setting can be displayed in “mm” units by  
setting memory switch No. 402 to “ON”.  
X-scale  
Initial value  
2406B  
20% - 200%  
(Limited by available sewing area.)  
(Initial value is 100%.)  
* The setting can be displayed in “mm” units by  
setting memory switch No. 402 to “ON”.  
Y-scale  
Initial value  
2407B  
430FXFS: 200 sti/min to 3200 sti/min  
438FX: 200 sti/min to 2700 sti/min  
Setting units are 100 sti/min.  
(Initial value is 2000 sti/min.)  
* The setting is displayed in units of 10 sti/min.  
For a setting of 2000 sti/min, the display will  
be “200”.)  
Sewing  
speed  
Initial value  
2408B  
KE-430FX/KE-430FS, BE-438FX  
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5. USING THE OPERATION PANEL (BASIC OPERATIONS)  
Parameter  
Setting range and initial value  
Display  
Lo1-Lo9  
(Initial values: 430FXFS: Lo8, 438FX: Lo7)  
The starting-up speed at the sewing start can  
be adjusted.  
* The smaller the number, the slower the start.  
* This is used to stop the thread from pulling  
out at the sewing start, and at times when  
skipped stitches might easily occur.  
Initial value  
2456B  
430FXFS: Medium-weight materials (-03), knitted wear (-0K), foundation garments (-0F)  
Lo1  
200  
Lo2  
200  
Lo3  
300  
Lo4  
400  
Lo5  
400  
Lo6  
400  
Lo7  
400  
Lo8  
800  
Lo9  
Sewing speed  
for 1st stitch  
Sewing speed  
for 2nd stitch  
Sewing speed  
for 3rd stitch  
Sewing speed  
for 4th stitch  
1500  
200  
300  
500  
300  
400  
600  
400  
500  
700  
400  
600  
900  
500  
800  
600  
800  
800  
1200  
2500  
1200  
2500  
3200  
3000  
3200  
Slow start  
pattern  
1200  
1200  
3200  
(sti/min)  
430FXFS: Heavy-weight materials (-05)  
Lo1  
Lo2  
Lo3  
Lo4  
400  
Lo5  
400  
Lo6  
400  
Lo7  
800  
Lo8  
Lo9  
Sewing speed  
for 1st stitch  
Sewing speed  
for 2nd stitch  
Sewing speed  
for 3rd stitch  
Sewing speed  
for 4th stitch  
200  
200  
300  
1500  
1500  
200  
300  
500  
300  
400  
600  
400  
500  
700  
400  
600  
900  
600  
800  
800  
1200  
2500  
1200  
2500  
3200  
2000  
2500  
3200  
3000  
3200  
1200  
3200  
(sti/min)  
438FX  
Lo1  
200  
Lo2  
200  
Lo3  
300  
Lo4  
300  
Lo5  
300  
Lo6  
400  
Lo7  
400  
Lo8  
400  
Lo9  
400  
Sewing speed  
for 1st stitch  
Sewing speed  
for 2nd stitch  
Sewing speed  
for 3rd stitch  
Sewing speed  
for 4th stitch  
200  
300  
300  
200  
300  
400  
300  
300  
400  
300  
400  
400  
400  
400  
400  
400  
400  
400  
400  
600  
900  
600  
900  
900  
1500  
2000  
2000  
* The speed will not be faster than the sewing speed which has been set.  
* The thread nipper device will not operate for settings other than Lo8 and Lo9.  
(sti/min)  
0 - 300  
(Initial setting is “75”.)  
* The later the value, the stronger the upper  
thread tension.  
Upper thread  
tension  
<For  
KE-430FX and  
BE-438FX>  
Initial value  
2409B  
KE-430FX/KE-430FS, BE-438FX  
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5. USING THE OPERATION PANEL (BASIC OPERATIONS)  
5-3. Copying programs  
To create a program with parameters that are almost exactly the same as those of another program, you can copy the original  
program and change just the parts which need to be changed.  
Select the program number to be used for creating Carry out steps 1 and 2 in “5-2. Program setting method”  
1
the new program.  
to select the program number to be used for creating the  
new program.  
Select a program number from 200 to 999.  
For example, to create  
program number 300:  
2410B  
Switch to program copy mode.  
While pressing the F1 key (1), press the F4 key (2).  
2
“CoPy” will be displayed in the menu display, “PG”  
will be displayed in the SECTION No. display, and the  
number of the program containing the original data will  
be displayed in the TENSION display.  
The displays will not appear in this way unless a  
program number from 200 to 999 has been selected  
as the new program number.  
2411B  
Select the program containing the original data.  
3
Press the  
or  
key (3) to change the number of  
the program containing the original data.  
The value in the TENSION display will flash.  
If you press the RESET key, you can cancel the copy  
operation and return to program mode.  
For example, to copy  
program number 12:  
2382B 2383B  
2412B  
Copy the program.  
Press the ENTER key.  
4
All parameters in the program will be copied, and the  
sewing machine will then return to the status in step 3  
of “5-2. Program setting method”.  
2413B  
2414B  
Change the necessary parameters.  
Carry out the steps from step 4 onward in “5-2. Program  
setting method” to change the necessary parameters.  
5
KE-430FX/KE-430FS, BE-438FX  
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5. USING THE OPERATION PANEL (BASIC OPERATIONS)  
5-4. Checking the sewing pattern (KE-430FXFS)  
Use test feed mode to check the needle movement with only the work clamp operating.  
Check that the needle hole does not come out from the frame of the work clamp.  
1. Press the TEST key.  
The number of stitches remaining until the final stitch  
will be displayed in the menu display.  
1
2416B  
TEST indicator lights  
2. Press the  
or  
key (1) to set the program number  
that you would like to check.  
If the PROGRAM No. display is flashing, depress the foot  
switch to the 2nd step.  
The feed mechanism will move to the home position  
and the program number will change from flashing to  
illuminated.  
For example, program  
number 2  
2nd step  
2415B 4441Q  
Program No. flashes Æ illuminates  
Start continuous test feed mode.  
Depress the foot switch to the 2nd step and then release it.  
The work clamp will start moving continuously one  
stitch at a time.  
2
(The stitch number display will be decremented by  
one stitch at a time.)  
The TEST indicator will flash.  
[Fast-forward test mode]  
If you depress the foot switch to the 1st step while the  
work clamp is moving, the feeding speed will become  
faster while the foot switch is being depressed.  
4441Q  
[Test interrupt mode]  
If you would like the work clamp to stop moving, press  
the TEST key.  
When the foot switch is depressed to the 2nd step,  
the work clamp will start moving again.  
2nd step  
If you would like sewing to resume from the point where it  
was paused, press the TEST key while test feeding is  
paused to switch off the TEST indicator.  
TEST indicator flashes  
[Paused sewing standby mode]  
When you depress the foot switch to the 2nd step,  
sewing will start.  
2nd step  
2404B 2416B 4441Q  
TEST indicator switches off  
If you press the  
key (2) while in this mode, the work clamp will  
move forward by one stitch, and if you press the  
key (3), the work  
clamp will move back by one stitch. (It will move quicker if you keep the  
key pressed down.)  
If you press the RESET key, the work clamp will return to the sewing  
start position.  
2417B  
Once the test feed reaches the final stitch, the work  
clamp stops moving.  
Press the TEST key.  
3
2404B  
TEST indicator switches off  
1st step  
Depress the foot switch to the 1st step.  
4
The work clamp will rise and the preparation for sewing  
will be completed.  
4441Q  
KE-430FX/KE-430FS, BE-438FX  
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5. USING THE OPERATION PANEL (BASIC OPERATIONS)  
5-5. Checking the sewing pattern (BE-438FX)  
Use test feed mode to check the needle movement with only the button clamp operating.  
Press the TEST key.  
The number of stitches remaining until the final stitch  
will be displayed in the menu display.  
1
2416B  
TEST indicator lights  
2. Press the  
or  
key (1) to set the program number  
that you would like to check.  
If the PROGRAM No. display is flashing, depress the foot  
switch to the 2nd step.  
The feed mechanism will move to the home position  
and the program number will change from flashing to  
illuminated.  
For example, program  
number 2  
2nd step  
2415B  
4441Q  
Program No. flashes Æ illuminates  
Set the button. (Refer to “4-7. Inserting the button”.)  
2
3
Start single-stitch test feed mode.  
Depress the foot switch to the 2nd step and then release  
it.  
The button clamp will move by one stitch only.  
The TEST indicator will flash.  
2nd step  
4441Q  
After this, the button clamp will move forward by one stitch each time you depress the foot switch to the 1st step. Turn  
the pulley by hand each time the button clamp moves by one stitch, and check whether the needle drops into the hole  
of the button without touching the button. (If you turn the machine pulley one full rotation in the direction of sewing  
machine operation at this time, the button clamp will move forward by one stitch when the needle bar is near the  
needle up position.)  
In addition, when the foot switch is depressed to the 2nd step, the button clamp will move continuously by 1 stitch at a time as  
long as the foot switch is kept depressed.  
[Paused sewing standby mode]  
If you would like sewing to resume from the point  
where it was paused, press the TEST key while test  
feeding is paused to switch off the TEST indicator.  
When you depress the foot switch to the 2nd step,  
sewing will start.  
2nd step  
2404B 4441Q  
TEST indicator switches off  
If you press the  
key (1) while in this mode, the button clamp will  
move forward by one stitch, and if you press the  
key (2), the button  
clamp will move back by one stitch. (It will move quicker if you keep  
the key pressed down.)  
2417B  
If you would like to start single-stitch test feed once more, press the  
TEST key so that the TEST indicator flashes.  
If you press the RESET key, the button clamp will return to the sewing  
start position.  
TEST indicator flashes  
2416B  
End test feeding.  
Press the TEST key.  
Depress the foot switch to the 1st step.  
The button clamp will be raised and preparation for  
sewing will be complete.  
4
5
1st step  
TEST indicator switches off  
2404B  
4441Q  
KE-430FX/KE-430FS, BE-438FX  
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5. USING THE OPERATION PANEL (BASIC OPERATIONS)  
5-6. Correcting the upper thread tension <For KE-430FX and BE-438FX>  
The upper thread tension value is always displayed during sewing standby mode, and it can be changed at any time.  
<A. Basic method of use>  
The changes made at this time will be reflected in each program, so this is a useful way of changing programs while checking  
actual sewing.  
1. Press the  
or  
key (1) to change the value in the  
TENSION display (2).  
The upper thread tension value which is set will be  
applied the next time sewing is carried out.  
2418B  
<B. Overall correction>  
This function is useful if you would like to change the tension values for all programs at once.  
1. Press the TENSION key.  
The TENSION indicator will illuminate.  
The overall correction value will be displayed in the  
TENSION display.  
2. Press the  
or  
key (1) to change the overall  
correction value in the TENSION display.  
The upper thread tension value which is set will be  
applied the next time sewing is carried out.  
*
The upper thread tension which matches the overall  
correction value which has been set for the upper  
thread tension will be applied during sewing, regardless  
of whether the TENSION indicator is illuminated or  
switched off.  
2419B  
(In this case, the setting value of “76” which was set in  
<A. Basic method of use> has the setting value of “5”  
added to it in <B. Overall correction> so that the upper  
thread tension applied will be “81”.)  
2382B 2383B  
KE-430FX/KE-430FS, BE-438FX  
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6. USING THE OPERATION PANEL (ADVANCED OPERATIONS)  
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS)  
6-1. Setting memory switches  
Change the mode to memory switch setting mode.  
While pressing the TEST key, press the TENSION key.  
1
All indicators switch off  
The memory switch number will be displayed in the  
PROGRAM No. display and the setting value for that  
number will be displayed in the menu display.  
2420B 2421BB  
Menu indicator switches off, TEST indicator flashes  
Select the memory switch that you would like to change Press the  
the setting for.  
number.  
or  
key to select the memory switch  
2
2422B  
If you would like to display only the numbers of While pressing the SELECT key, press the  
memory switches that have been changed from default (1).  
or  
key  
settings  
The numbers of memory switches that have been  
changed from default settings will appear in order.  
2423B  
Change the memory switch parameters.  
3
4
Press the  
or  
key to change the setting value.  
The flashing display means that the setting has not yet been  
applied.  
You can make the initial setting appear in the display by  
pressing the RESET key.  
2424B  
Apply the changed parameter setting.  
Press the ENTER key.  
The menu display will change from flashing to  
illuminated, and this means that the parameter setting  
has been applied.  
If you press the  
or  
key (1) or the TEST key  
without pressing the ENTER key, you can cancel the  
parameter changes.  
2414B  
Repeat steps 2 to 4 above to set each memory switch.  
5
6
Exit setting mode.  
Press the TEST key.  
The changes will be memorized and the sewing  
machine will switch to home position detection standby.  
2404B  
TEST indicator switches off  
KE-430FX/KE-430FS, BE-438FX  
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44  
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS)  
6-2. List of memory switches  
Setting  
range  
No.  
Setting items  
Default  
1
Work clamp/button clamp lift timing when sewing is complete  
OFF  
1
2
Does not lift automatically.  
001  
100  
Lifts at the final stitch position.  
Lifts after moving to the home position.  
Sewing start speed  
The sewing speed for the first 1 - 5 stitches is set by memory switch nos. 151 -  
155.  
OFF  
ON  
*1  
(Refer to the Service Manual for details of memory switch nos. 151 - 155.)  
The speed increases slowly.  
ON  
The slow start pattern can be selected in program mode.  
Single-stitch test feed  
Test feed starts when the foot switch is depressed, and it continues automatically  
OFF  
until the final stitch.  
200  
Test feeding is carried out stitch by stitch when the foot switch is depressed.  
In addition, when the test indicator is illuminated, test feeding will move forward  
one stitch at a time when the machine pulley is turned by hand.  
ON  
Production counter display  
300  
401  
402  
OFF  
ON  
Lower thread counter display  
Production counter display  
OFF  
OFF  
OFF  
Button hole distance display (*2)  
OFF  
ON  
X-scale and Y-scale will be displayed as pattern outer dimensions (mm).  
X-scale and Y-scale will be displayed as button hole distances (mm).  
X-scale/Y-scale mm display (*3)  
OFF  
ON  
Displayed as %.  
Displayed as mm.  
Display for program numbers 1 to 89 (1 to 64 for BE-438)  
Program numbers 1 to 89 (1 to 64 for the BE-438) are skipped during program  
OFF  
ON  
404  
405  
number selection operations so that these numbers cannot be selected. (*4)  
Program numbers 1 to 89 (1 to 64 for the BE-438) are displayed during program  
number selection operations.  
ON  
ON  
Cycle program numbers (C01 to C30)  
Cycle program numbers are skipped during program number selection operations  
OFF  
ON  
so that these numbers cannot be selected.  
Cycle program numbers are displayed during program number selection  
operations.  
Program numbers switched by F keys  
When the F1 to F4 keys are pressed, operation switches to program numbers 1 to  
4.  
When the F1 to F4 keys are pressed, operation switches to program numbers 201  
to 204.  
When the F1 to F4 keys are pressed, operation switches to cycle program  
numbers C01 to C04.  
0
1
2
406  
0
When the F1 to F4 keys are pressed, operation switches to the program number  
which has been pre-assigned to the respective key.  
Assignment to F1 key: Memory switch No. 407  
Assignment to F2 key: Memory switch No. 408  
Assignment to F3 key: Memory switch No. 409  
Assignment to F4 key: Memory switch No. 410  
3
*1: Off for KE-430FXFS and ON for BE-438FX.  
*2: The setting is enabled when memory switch No. 402 is set to “ON” and (for the BE-438FX) when pattern No. 1 to No. 64  
(button hole data) is selected.  
*3: The mm display may differ slightly from the actual sewing size.  
*4: If none of program numbers 200 to 999 or cycle program numbers C01 to C30 have been programmed, this setting is  
invalid. (Operation occurs as though the setting is ‘ON’.)  
KE-430FX/KE-430FS, BE-438FX  
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6. USING THE OPERATION PANEL (ADVANCED OPERATIONS)  
No.  
407  
Setting range  
Assignment to F1 key  
Setting items  
Default  
1
If memory switch No. 406 = 3, operation switches to the program  
number which has been set.  
1 to 999, C01 to C30  
Assignment to F2 key  
1 to 999, C01 to C30  
Assignment to F3 key  
1 to 999, C01 to C30  
Assignment to F4 key  
1 to 999, C01 to C30  
Assignment  
to F1 key  
408  
409  
410  
500  
If memory switch No. 406 = 3, operation switches to the program  
number which has been set.  
3
4
If memory switch No. 406 = 3, operation switches to the program  
number which has been set.  
If memory switch No. 406 = 3, operation switches to the program  
number which has been set.  
Thread nipper device  
OFF  
ON  
Disable  
OFF  
Thread nipper device can be used. (*5)  
*5: The setting is enabled when memory switch No. 100 is set to “ON”, the slow start pattern is set to Lo8 or Lo9 and when  
the sewing speed value is set to 1500 sti/min or more.  
KE-430FX/KE-430FS, BE-438FX  
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6. USING THE OPERATION PANEL (ADVANCED OPERATIONS)  
6-3. Using the lower thread counter  
If you use the lower thread counter to set the number of articles which can be sewn with the amount of lower thread available,  
you can stop the lower thread running out in the middle of sewing a pattern.  
<Initial value setting>  
Change the mode to lower thread counter setting  
mode.  
While pressing the TEST key, press the  
key.  
1
Previous initial value  
• The initial value which was set previously will appear in  
the menu display.  
2425B 2426B  
TEST indicator and COUNTER indicator flash  
Change the initial value.  
Press the  
or  
key (1) to set the initial value.  
2
• The initial value can be set from 1 ("0001") to 9999  
("9999").  
• If the initial value is set to "0000", the lower thread  
counter will not operate.  
If you press the RESET key, the setting will become  
“0000”.  
If the value is changed, the display will change to  
flashing.  
2427B  
Apply the changed parameter setting.  
Press the ENTER key.  
3
4
The value will be applied and the display will change  
to illuminated.  
If you press the TEST key without pressing the  
ENTER key, you can cancel the parameter changes.  
2414B  
Ending setting mode  
Press the TEST key.  
TEST indicator switches off  
2404B  
<Lower thread counter operation>  
If the initial value is set to other than “0”, the lower thread counter will operate. (It operates even if the lower thread counter  
display is not active.)  
If you press the SELECT key so that the COUNTER indicator illuminates, the current counter value will be displayed in the  
menu display (1).  
1. Each time the sewing of a single article is completed, the  
value shown in the menu display (1) is reduced by 1.  
2. If the lower thread counter becomes "0000", the menu  
display (1) and the COUNTER indicator (2) will flash and  
a buzzer will sound. The sewing machine will not operate  
during this time, even if the foot switch is depressed.  
3. When you press the RESET key (3), the initial value for  
the lower thread counter will appear in the menu display  
(1) and sewing will be possible.  
*
You can press the  
or  
key (4) to set the lower  
thread counter to the desired value. However, this value  
will not be memorized as the initial value.  
*
If you press the RESET key (3) for 2 seconds or more,  
you can return the lower thread counter to its initial value  
even if the current value is not “0000”.  
2428B  
KE-430FX/KE-430FS, BE-438FX  
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6. USING THE OPERATION PANEL (ADVANCED OPERATIONS)  
6-4. Using the production counter  
<Setting the counter value>  
Change the mode to production counter setting  
mode.  
1
While pressing the TEST key, press the  
key.  
The 7 digits of the current counter value will be  
displayed in the PROGRAM No. display and the  
menu display.  
SPEED indicator illuminates  
TEST indicator and COUNTER indicator illuminate  
2429B 2430B  
Change the counter value.  
Press the  
or  
key (1) to set the counter value.  
2
• The counter value can be set from [000][0000] to  
[999][9999].  
• If you press the RESET key during setting mode, the  
value will become [000][0000].  
• If the value is changed, the display will change to  
flashing.  
For example,  
1,234,500.  
2431B  
Apply the changed parameter setting.  
Press the ENTER key.  
3
The value will be applied and the display will change  
to illuminated.  
If you press the TEST key without pressing the  
ENTER key, you can cancel the parameter changes.  
Press the TEST key.  
2414B  
Ending setting mode  
4
2404B  
TEST indicator switches off  
<Production counter operation>  
The production counter is always operating. (It operates even if the production counter display is not active.) If you press the SELECT  
key so that the COUNTER indicator illuminates when memory switch No. 300 is ‘ON’, the current production counter value will be  
displayed in the menu display instead of the lower thread counter value. (The SPEED indicator will also illuminate at this time.)  
1. The counter is incremented by 1 each time one sewing  
operation is complete. If the production counter display is  
active, the number being displayed in the menu display (1)  
will be incremented by 1.  
*
If you would like the digits to be displayed in all columns,  
use the temporary display function described below.  
*
If you press the RESET key (2) for 2 seconds or more, the  
counter value can be reset to [0000].  
Temporary display function  
While pressing the ENTER key, press the F1 key. The  
production counter will be displayed as 7 digits while the  
keys are being pressed.  
While pressing the ENTER key, press the F2 key. The  
lower thread counter will be displayed while the keys are  
being pressed.  
2432B  
KE-430FX/KE-430FS, BE-438FX  
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6. USING THE OPERATION PANEL (ADVANCED OPERATIONS)  
6-5. Using cycle programs  
Sewing patterns that have been recorded in user programs can be recorded in up to 30 cycle programs (C01 to C30).  
One cycle program can contain up to a maximum of 50 steps (St1 to St50).  
When sewing the sewing patterns in a certain order, it can be useful to record them in a cycle program beforehand.  
<Recording method>  
Switch to cycle program recording mode.  
1
While pressing the TEST key, press the  
key (1).  
2436B 2382B  
The cycle program number (C01 to C30) will be  
displayed in the PROGRAM No. display, the step  
number (St1 to St50) will be displayed in the menu  
display, and the program number will be displayed in  
the TENSION display.  
If no program has been recorded for a step, ‘---‘ will  
be displayed for that step.  
TEST indicator flashes  
2435B  
Select a cycle program number.  
2
Press the  
number that you would like to use.  
or  
key to select the cycle program  
‘St 1’ will be displayed.  
2437B  
TEST indicator flashes  
Select the program number to be recorded in step 1.  
3
Press the  
or  
key (2) to display the program  
number to be recorded in the TENSION display (3).  
If the value is changed, the display will change to  
flashing.  
To cancel the recording, keep the RESET key  
pressed for more than 2 seconds so that ‘---‘ is  
displayed.  
2438B 2382B 2383B  
TEST indicator flashes  
Apply the program setting.  
Press the ENTER key.  
4
2414B  
The display will change from flashing to illuminated,  
and this means that the setting has been applied.  
If you press the  
/
keys (4), the  
/
keys (5) or  
the TEST key without pressing the ENTER key, you  
can cancel the parameter changes.  
KE-430FX/KE-430FS, BE-438FX  
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6. USING THE OPERATION PANEL (ADVANCED OPERATIONS)  
Repeat steps 3 and 4 above to record step 2 and  
subsequent steps in the same way.  
5
Press the  
or  
key (5) to display the step number  
you would like to record in the menu display (6).  
If you would like to continue setting another cycle program, repeat steps 2 to 5 above.  
6
7
End cycle program recording mode.  
Press the TEST key.  
This completes the recording of cycle programs.  
2404B  
TEST indicator switches off  
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6. USING THE OPERATION PANEL (ADVANCED OPERATIONS)  
<Method of use>  
When a cycle program has been recorded, the cycle program number is displayed after the program number when a program  
number is selected.  
1. Press the  
or  
key (1) to select the cycle program  
number that you would like to use.  
The order of displays is as follows.  
key  
Program No.  
(1 – 89 (*1) )  
key  
key  
key  
key  
Program No.  
Program  
for step 1  
parameter  
(200 – 999 (*2) )  
key  
Cycle program No.  
(C01 – C30 (*2) )  
*1: 1 to 64 for the 438FX  
Step No.  
*2: Only the numbers which have been recorded are  
displayed.  
The cycle program number is displayed in the  
PROGRAM No. display, the step number is displayed in  
the TENSION display, and the parameter for that step is  
displayed in the menu display (2).  
When you press the SELECT key, the menu display (2)  
and the menu indicator (3) are switched, so that you can  
check the program parameters for that step.  
2439B  
2. Carry out sewing while referring to “7. Sewing”.  
The recorded programs are carried out in the order of  
the steps, and when the last step is completed, sewing  
returns to the first step.  
If you press the  
or  
key, you can return to the  
previous step or skip to the next step respectively. (You  
do not need to carry out home position detection again.)  
2440B  
2382B 2383B  
(Continued on next page)  
KE-430FX/KE-430FS, BE-438FX  
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51  
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS)  
The range of programs that can be selected and the order of the displays may change depending on the memory switch  
settings.  
Memory switch  
Range of programs and display order  
Program No.  
Cycle program No.  
C01 – C30 (*2)  
Program No.  
1 – 89 (*1)  
200 – 999 (*2)  
(Initial setting)  
Program No.  
Program No.  
1 – 89 (*1)  
200 – 999 (*2)  
Program No.  
Cycle program No.  
C01 – C30 (*2)  
200 – 999 (*2)  
Program No.  
Program No. (*3)  
1 – 89 (*1)  
or  
200 – 999 (*2)  
*1: 1 to 64 for the 438FX  
*2: Only the numbers which have been recorded are displayed.  
*3: Only when program numbers 200 to 999 have not been recorded.  
KE-430FX/KE-430FS, BE-438FX  
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52  
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS)  
6-6. Direct selection  
You can use the function keys to directly select program numbers and cycle program numbers. However, if a program  
number has nothing recorded, it will not be displayed.  
<Function keys>  
2441B  
The parameters which can be selected will vary depending on the memory switch settings.  
406 = 0 (Initial setting)  
Program No. 1  
Program No.2  
Program No.3  
Program No.4  
2443B  
2444B  
2445B  
2442B  
4061  
Program No.201  
Program No.202  
Program No.203  
Program No.204  
2442B  
2443B  
2444B  
2445B  
4062  
Program No.C01  
Program No.C02  
Program No.C03  
Program No.C04  
2443B  
2444B  
2445B  
2442B  
4063  
Item specified by memory Item specified by memory Item specified by memory Item specified by memory  
switch No. 407  
switch No. 408  
switch No. 409  
switch No. 410  
2444B  
2445B  
2442B  
2443B  
KE-430FX/KE-430FS, BE-438FX  
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6. USING THE OPERATION PANEL (ADVANCED OPERATIONS)  
6-7. Resetting all settings to their defaults  
If the sewing machine stops operating normally, the cause may be that an incorrect setting may have been made for the memory  
data by means of memory switches, for instance. In such cases, it may be possible to restore normal operation by following the  
steps given below to initialize the memory setting data.  
Change to initialization mode.  
2446B  
1
(While pressing the RESET key, press the power ON  
switch.)  
‘1’ will be displayed in the PROGRAM No. display, and ‘ALL’ will  
be displayed in the menu display.  
[Reference]  
If the  
or  
key (1) is pressed at this time, you can select the items to be initialized  
as shown below.  
* For details on initialization items other than “init ALL”, refer to the service manual.  
PROGRAM  
No. display  
Main display  
Initialization item  
All data in memory is cleared or initialized.  
(*3)  
1
ALL」  
The values for each parameter in program  
No. 1 to 199 set as described in “5-2.  
Program setting method” are initialized.  
Program numbers 200 to 999 are cleared.  
All programs are cleared or initialized.  
Cycle programs are cleared.  
Memory switches are initialized.  
Additional patterns are cleared.  
2
*1  
3
4
5
6
7
*2  
PALL」  
CYCL」  
MEM」  
PDAT」  
*1: P001 and P199 are displayed alternately.  
*2: P200 and P999 are displayed alternately.  
*3: Additional patterns will also be cleared, so check that a backup exists before  
clearing them.  
2447B 2138M 2139M  
Press the ENTER key for two seconds or more.  
• The menu display will change to illuminated and initialization will then be  
complete.  
2
3
2448B  
Press the TEST key.  
2404B  
KE-430FX/KE-430FS, BE-438FX  
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7. SEWING  
7. SEWING  
CAUTION  
Turn off the power switch at the following times, otherwise the machine may operate if the foot switch is depressed  
by mistake, which could result in injury.  
When replacing the needle and bobbin  
When not using the machine and when leaving the machine unattended  
Use threading mode or turn off the power first in order to carry out threading.  
Do not touch any of the moving parts or press any objects against the machine while sewing, as this may result in  
personal injury or damage to the machine.  
7-1. Sewing  
1. Turn on the power switch.  
2. Press the or key (1) to select the number for the  
program to be sewn.  
2342B  
3. Depress the foot switch to the 2nd step.  
The feed mechanism will move to the home position.  
1st step  
2nd step  
4441Q  
4. Set the material under the work clamp (2).  
(For the BE-438FX, insert the button and place the  
material under the button clamp (3). (Refer to “4-7.  
Inserting the button”.)  
5. Depress the foot switch to the 1st step.  
The work clamp (2) / button clamp (3) will be lowered.  
6. Depress the foot switch to the 2nd step.  
The sewing machine will start sewing.  
2384B  
7. Once sewing is completed and the thread has been  
trimmed, the work clamp (2) / button clamp (3) will rise.  
4116M  
55  
KE-430FX/KE-430FS, BE-438FX  
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7. SEWING  
7-2. Changing sewing conditions  
“X-scale”, “Y-scale” and “Sewing speed” can be changed even during sewing standby.  
The changes made at this time will be reflected in the program, so this is a useful way of changing programs while checking  
actual sewing.  
<Changing X-scale and Y-scale>  
1. Press the SELECT key (1) so that the X-SCALE  
indicator (2) (for X-scale setting) or the Y-SCALE  
indicator (3) (for Y-scale setting) is illuminated.  
The setting value (%) will be displayed in the menu  
display (4).  
2. Press the  
or  
key (5) to set the scale (20 - 200).  
The program number in the PROGRAM No. display  
(6) will flash.  
3. Depress the foot switch to the 2nd step.  
The work clamp will move to the sewing start  
position and the program number will change from  
flashing to illuminated.  
NOTE:  
Once the setting is complete, be sure to carry out the  
steps in "5-4./5-5. Checking the sewing pattern" to check  
that the needle drop position is correct.  
2450B  
<Changing the sewing speed>  
1. Press the SELECT key (1) so that the SPEED indicator  
(2) is illuminated.  
The setting value (sti/min) will be displayed in the  
menu display (3).  
2. Press the  
or  
key (4) to set the sewing speed.  
(Sewing speed values: KE-430FXFS: 200 to 3200;  
BE-438FX: 200 to 2700)  
2451B  
<Changing slow start pattern>  
* This setting cannot be made when memory switch No.  
100 is set to “OFF”.  
1. While the SPEED indicator (1) is illuminated and the  
sewing speed is being displayed in the menu display (2),  
press the SELECT key (3).  
• The setting value will be displayed in the menu display  
(2).  
2. Press the  
or  
key (4) to set the slow start pattern.  
* Refer to the list of parameters in “5-2. Program setting  
method”.  
2460B  
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8. MAINTENANCE  
8. MAINTENANCE  
CAUTION  
Turn off the power switch before carrying out cleaning, otherwise the machine may operate if the foot switch is  
pressed by mistake, which could result in injury.  
Be sure to wear protective goggles and gloves when handling the lubricating oil and grease, so that they do not get  
into your eyes or onto your skin, otherwise inflammation can result.  
Furthermore, do not drink the oil or eat the grease under any circumstances, as they can cause vomiting and  
diarrhoea. Keep the oil out of the reach of children.  
8-1. Cleaning the rotary hook  
4461Q  
1. Pull the shuttle race cover downward to open it, and then  
remove the bobbin case.  
2. Open the setting claw (1) in the direction indicated by the  
arrow, and then remove the shuttle race base (2) and the  
shuttle hook (3).  
4462Q  
3. Clean all the dust and thread ends from around the driver  
(4), the top of the rotary hook thread guide and the  
shuttle race.  
4482Q  
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8. MAINTENANCE  
8-2. Cleaning the control box air inlet ports  
Use a vacuum cleaner to clean the filter in the air inlet ports  
(2) of the control box (1) at least once a month.  
2309B  
8-3. Draining the oil  
1. Remove and empty the waste oil container (1) whenever  
it is full.  
2. After emptying the waste oil container (1), screw it back  
into its original position.  
* Check that the felt (2) is inside the oiler (1).  
2457B  
8-4. Cleaning the eye guard  
Wipe the eye guard clean with a soft cloth.  
NOTE:  
Do not use solvents such as kerosene or thinner to clean  
the eye guard.  
2310B  
8-5. Checking the needle  
Always check that the tip of the needle is not broken and  
also the needle is not bent before starting sewing.  
2311B  
8-6. Lubrication  
Carry out the lubrication referring to “3-12. Lubrication”.  
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8. MAINTENANCE  
8-7. Applying grease (Work clamp: KE-430FXFS)  
Periodically apply grease to the sliding parts of the work  
clamp (1) and the work clamp arm (2).  
Viewed from directly above  
NOTE:  
After replacing the work clamp (1), be sure to apply  
grease before using it.  
Grease  
* It is recommended that you use commercially-available  
NIPPON OIL CORPORATION Powernoc WB 2 grease  
for the work clamp (1).  
2312B  
8-8. Applying grease (When “GREASEUP” appears)  
If “GrE” and “AS.UP" flash on the PROGRAM No. display (1) and the menu display (2) respectively, and a buzzer sounds  
when the power switch is turned on, it means that grease needs to be applied. (The sewing machine will not operate at this  
time, even if the foot switch is depressed.)  
Apply grease as required, while referring to the following for details.  
2343B  
<To continue sewing temporarily without applying grease>  
1. Press the RESET key (3).  
2. The PROGRAM No. display (1) and the menu display (2) will change to the normal displays, and sewing can be carried  
out by depressing the foot switch.  
Note:  
• "GrE" and "AS.UP" will continue to be displayed each time the power is turned on until grease is applied and the  
notification is reset by carrying out the procedure on page 62.  
• If you continue to use the sewing machine after the “GrE” and “AS.UP" notification appears without applying grease  
(or without carrying out the reset procedure), “E100” will appear after a certain period of time and the sewing  
machine will be forcibly prevented from operating for safety reasons.  
If this happens, apply grease and carry out the reset procedure.  
* If you continue to use the sewing machine after carrying out the reset procedure but without applying grease,  
problems with the sewing machine may result.  
59  
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8. MAINTENANCE  
<Applying grease>  
Use Brother-specified “Grease unit (SB1275-101)”.  
1. Removing the grease assembly  
1. Remove the four screws (1), and  
then remove the rear cover (2).  
2. Remove the grease assembly (3)  
from inside the rear cover (2).  
3176B  
2. Using the tube  
2313B  
Use in “B. Applying grease to the rock gear shaft F”.  
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8. MAINTENANCE  
3. Applying grease  
< A. Applying grease to the eccentric wheel >  
3177B  
1. Turn off the power switch.  
2. Remove the four screws (1), and then remove the top cover (2).  
3. Remove the screw (4) of the eccentric wheel (3).  
* Be careful not to drop the screw (4) when removing it.  
4. Insert the grease nozzle into the hole in the eccentric  
wheel (3) as far as it will go, and then apply grease while  
turning the upper shaft (5) in the direction of the arrow.  
* Apply enough grease to make sure that it does not miss  
any parts.  
5. Check that enough grease has been applied so that it is  
overflowing slightly from the edges.  
6. Install the screw (4).  
7. Remove the bolt (6) from the eccentric wheel (3).  
* Be careful not to drop the bolt (6) when removing it.  
8. Loosen the two bolts (7), and slide the grease cover (8) in  
the direction of the arrow.  
* To prevent the bolts (7) from being dropped, do not  
remove them completely.  
9. Wipe away any grease which is remaining inside the  
eccentric wheel (3).  
10.Insert the grease nozzle into the holes in the eccentric  
wheel (3), and apply the grease.  
* Insert the grease nozzle into both holes to apply the  
grease, in order to make sure that the grease is  
applied evenly without missing any parts.  
3178B  
11. Check that enough grease has been applied so that it is  
overflowing slightly from the edges.  
12.Return the grease cover (8) to its original position, and  
then secure it by tightening the bolt (6) and the two bolts  
(7).  
NOTE:  
Securely tighten the bolt (6) and the two bolts (7). If any of  
these bolts are loose, grease may leak out and problems  
with sewing machine operation such as seizing may  
occur.  
Grease  
3179B  
61  
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8. MAINTENANCE  
<B. Applying grease to rock gear shaft F>  
1. Tilt back the machine head.  
2. Loosen the two screws (1), and then remove grease  
holder F (2). (Never loosen any screws other than the  
screw (1). If any other screws are loosened, the grease  
will leak out and this may cause problems with the  
sewing machine such as seizure.)  
3. Turn the pulley to move rock gear shaft F (3) to the most  
forward position.  
4. Remove the bolt (4) and the washer (5).  
5. Insert the grease nozzle (6) into the hole in rock gear  
shaft F (3) as far as it will go as shown in the illustration,  
and apply grease until it is overflowing slightly from the  
edges.  
6. Pull out the grease nozzle (6) while adding the grease.  
7. Install the bolt (4) and the washer (5).  
8. Install grease holder F (2) with the two screws (1).  
9. Install the rear cover with the four screws.  
3180B  
Note:  
• Once the grease tube has been opened, remove the nozzle from the tube, attach the cap securely and store the tube in a  
cool dark place.  
• The grease should be used as quickly as possible.  
• When using the grease again, remove any old grease from inside the nozzle first.  
(Store the tube away carefully once the tube has been opened, otherwise the grease remaining inside the tube may  
deteriorate, and this may affect its lubricating performance.)  
<Resetting the grease up counter>  
Once the grease has been applied, follow the procedure  
below to reset the cumulative number of stitches between  
grease applications.  
1. While pressing the F1 key (1), turn on the power switch.  
GCt” will appear in the PROGRAM No. display (2),  
and the cumulative number of stitches until grease  
should be applied will be displayed in the total of six  
columns in the section No. display (3) and the menu  
display (4) in units of 10,000 stitches.  
2. Press and hold the RESET key (5) for 2 seconds or  
more. (This completes the reset procedure.)  
3. When you press the TEST key (6), the displays will  
return to their normal displays.  
2344B  
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9. STANDARD ADJUSTMENT  
9. STANDARD ADJUSTMENT  
CAUTION  
Maintenance and inspection of the sewing machine  
should only be carried out by a qualified technician.  
Hold the machine head with both hands when tilting  
it back or returning it to its original position.  
Furthermore, after tilting back the machine head, do  
not push the face plate side or the pulley side from  
above, as this could cause the machine head to  
topple over, which may result in personal injury or  
damage to the machine.  
Ask your Brother dealer or a qualified electrician to  
carry out any maintenance and inspection of the  
electrical system.  
Turn off the power switch and disconnect the power  
cord from the wall outlet at the following times,  
otherwise the machine may operate if the foot  
switch is depressed by mistake, which could result  
in injury.  
If the power switch needs to be left on when carrying  
out some adjustment, be extremely careful to  
observe all safety precautions.  
When carrying out inspection, adjustment and  
If any safety devices have been removed, be  
absolutely sure to re-install them to their original  
positions and check that they operate correctly  
before using the machine.  
maintenance  
When replacing consumable parts such as the  
rotary hook  
9-1. Standard thread tension  
KE-430FXFS  
Use  
BE-438FX  
Medium-weight  
materials (-03)  
#50 or  
equivalent  
#50 or  
Knitted wear  
(-0K)  
#60 or  
equivalent  
#80 or  
equivalent  
0.8 - 1.2  
[80 - 120]*2  
Foundation  
garments (-0F)  
#60 or  
equivalent  
#60 or  
Heavy-weight  
materials (-05)  
Upper thread  
Lower thread  
#30 or equivalent #60 or equivalent  
#50 or equivalent #60 or equivalent  
equivalent  
equivalent  
Upper thread tension (N)  
[Tension value] *1  
1.2 – 1.8  
0.5 - 1.2  
[70 - 130]*2  
[50 - 150]*2  
Lower thread tension (N)  
Pre-tension (N)  
Needle  
0.2 - 0.3  
0.05 - 0.3  
DP x 5KN #11  
0.2 - 0.3  
0.1 - 0.4  
DP x 5 #14  
DP x 5 #9  
DP x 17NY #19  
DP x 17NY #12  
*1: For KE-430FX and BE-438FX.  
*2: This is the tension value when the pretension is 0.05 N.  
9-1-1. Upper and lower thread tension  
2319B  
2318B  
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9. STANDARD ADJUSTMENT  
9-1-2. Thread take-up spring  
KE-430FXFS  
Use  
BE-438FX  
Medium-weight  
Knitted wear  
Foundation  
Heavy-weight  
materials (-03)  
Thread take-up spring  
height (mm)  
(-0K)  
garments (-0F)  
materials (-05)  
6 - 11  
6 - 11  
Thread take-up spring  
tension (N)  
0.2 - 0.4  
0.6 - 1.0  
0.15 – 0.35  
< Thread take-up spring height >  
Lower Higher  
Loosen the set screw (1) and turn the tensioner body to  
adjust the thread take-up spring height.  
2320B  
< Thread take-up spring tension >  
Stronger  
Weaker  
2321B  
Adjust by turning the shaft (2) with a screwdriver.  
* When the spring height (stroke) is great or the spring tension is insufficient, it may cause the thread end length to vary after  
thread trimming.  
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9. STANDARD ADJUSTMENT  
9-1-3. Arm thread guide C  
2322B  
The standard position of arm thread guide C (1) is when the  
screw (2) is aligned with the position of the reference line.  
To adjust the position, loosen the screw (2) and then move  
arm thread guide C (1).  
When sewing heavy-weight materials, move arm thread  
guide C (1) to the left. (The thread take-up amount will  
increase.)  
When sewing light-weight materials, move arm thread  
guide C (1) to the right. (The thread take-up amount will  
decrease.)  
Reference  
line  
9-1-4. Needle bar bush thread guide D  
Check that needle bar bush thread guide D (1) is at the  
middle of the needle bar (2).  
NOTE:  
If needle bar bush thread guide D (1) is not in the correct  
position, the thread may pull out or skipped stitches may  
occur.  
2325B  
9-2. Adjusting the needle bar height  
2326B  
2327B  
1. Loosen the two screws (1), and then remove the eye guard assembly (2).  
2. Turn the pulley to move the needle bar to the lowest position. Then remove the rubber cap (4), loosen the screw (5) and  
then move the needle bar up or down to adjust so that the second reference line from the bottom of the needle bar  
(reference line A) is aligned with the lower edge of the needle bar bush (3).  
*
If using a DP x 5 needle, use the highest reference line (reference line a).  
65  
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9. STANDARD ADJUSTMENT  
9-3. Adjusting the needle bar lift amount and the driver needle guard  
2499B  
2544Q  
Middle of the needle  
Tip  
2500B  
0135Q  
1. Turn the machine pulley to raise the needle bar from the lowest position until the lowest reference line on the needle bar  
(reference line B) is aligned with the lower edge of the needle bar bush (1).  
* If using a DP x 5 needle, align with reference line b which is the second reference line from the top.  
Note:  
Check that the wiper and the needle do not touch when lowering the needle bar. If the wiper is in a position where it  
will touch the needle, move the wiper to the right by hand so that it does not touch the needle.  
2. Loosen the bolt (2).  
3. Move the driver (4) to adjust so that the tip of the rotary hook is aligned with the middle of the needle and so that the  
driver needle guard (3) is touching the needle, and then tighten the bolt (2).  
Note:  
If the needle contact pressure is too great, skipped stitches may occur. On the other hand, if the driver needle guard  
(1) is not touching the needle, the tip of the inner rotary hook will obstruct the needle, resulting in an excessively high  
amount of friction.  
9-4. Adjusting the needle clearance  
0.01 - 0.08mm  
2328B  
0138Q  
Turn the pulley to align the tip of the rotary hook with the needle center line. Then loosen the set screw (1) and turn the  
eccentric shaft (2) to adjust so that the clearance between the needle and the rotary hook is 0.01 - 0.08 mm.  
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9. STANDARD ADJUSTMENT  
9-5. Adjusting the shuttle race thread guide  
2329B  
Install the shuttle race thread guide (1) by pushing it in the direction of the arrow so that the needle groove is aligned with  
the center of the needle plate hole.  
Note:  
If the shuttle race thread guide is in the wrong position, thread breakages, soiled thread or thread entanglements may  
occur.  
The position of the shuttle race thread guide is adjusted at the time of shipment from the factory. It should not be  
changed if at all possible.  
9-6. Rotary hook lubrication amount  
More  
oil  
Less  
oil  
2330B  
1. Tilt back the machine head.  
2. Loosen the two bolts (1), and then adjust by moving the oil tank assembly (2) up or down.  
* The standard position is when the centers of the two bolts (1) are aligned with the reference line on the oil tank plate  
(3).  
67  
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9. STANDARD ADJUSTMENT  
9-7. Replacing the movable knife and fixed knife  
2331B  
1. Open the shuttle race cover, remove the two screws (1), and then remove the feed plate (2).  
2. Remove the two screws (3) and the two flat screws (4), and then remove the needle plate (5).  
3. Remove the movable knife (6) and the fixed knife (7).  
2333B  
2332B  
4. Install new fixed knife (7) in the position shown in the illustration.  
5. Apply grease to the outside of the collar (8) and the shoulder screw (9), and then install the new movable knife (6) together  
with the thrust washer (10) and movable knife spacer (11).  
6. Check that the movable knife (6) and the fixed knife (7) cut the thread cleanly.  
7. Apply grease to the pin (12) of the movable knife, and then insert it into the hole in the movable knife connecting plate (13).  
Then, while placing the pin (15) of thread nipper connecting plate F into the hole in thread nipper D (14), install the needle  
plate (5).  
8. Check that the center of the needle hole and the needle are aligned.  
Select an accessory movable knife spacer (11) which allows  
the movable knife (6) to cross over the fixed knife (7) with a  
force that is as gentle as possible while still allowing the  
thread to be trimmed.  
*
Move the movable knife (6) as shown in the illustration  
and check that it trims the thread cleanly.  
Note:  
If the movable knife spacer (11) is too thick, it will not be  
possible to trim the thread.  
2334B  
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9. STANDARD ADJUSTMENT  
9-8. Adjusting the work clamp lift amount (KE-430FXFS)  
Adjust so that the actual maximum lift amount for the work clamp is 17 mm above the top of the needle plate when the  
maximum work clamp height has been set to 17 mm using the operation panel.  
2385B  
1. Loosen the bolt (1) and move the work clamp arm lever plate (2) up or down to adjust.  
2. Apply grease to the bottom of the work clamp lifter plate (3), to the top of the work clamp arm lever plate (2) and to the  
sliding part of the work clamp (4) (grease is already applied at the time of shipment), and check that the movement  
becomes easier.  
9-9. Adjusting the button clamp lift amount (BE-438FX)  
Adjust so that the actual maximum lift amount for the button clamp is 13 mm above the top of the needle plate when the  
maximum button clamp height has been set to 13 mm using the operation panel.  
2386B  
Remove the spring (1), loosen the screw (2) and adjust the button clamp holder hook (3) by moving it up and down.  
* If the button clamp lift amount is too large, the button clamp will not be raised.  
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9. STANDARD ADJUSTMENT  
9-10. Adjusting the holding pressure (BE-438FX)  
Loosen the nut (1) and turn the nut (2) to the point where it  
is just tight enough that the material will not slip out of place  
when it is slightly pulled (keep pressure as slight as  
possible).  
2387B  
9-11. Adjusting the position of the button clamp (BE-438FX)  
1. Loosen the two bolts (1) and adjust the button clamp  
base (2) by moving it.  
2. Carry out test feeding to check that the needle will go  
through the button hole with no contact.  
2388B  
9-12. Adjusting the thread wiper  
<Thread wiper height adjustment>  
Loosen the two screws (2) and adjust  
the thread wiper (1) so that the  
clearance between the top of the  
thread wiper (1) and the needle point  
is approximately 2 mm when the  
thread wiper (1) is aligned with the  
center of the needle.  
Note:  
Check that the needle bar thread  
guide (3) and the thread wiper base  
shaft (4) are not touching at this  
time.  
Approx. 2 mm  
2338B  
2335B  
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9. STANDARD ADJUSTMENT  
< Thread wiper racking width adjustment >  
1. Remove the side cover.  
2. Loosen the set screw (1) and  
adjust so that the distance from  
the thread wiper to the center of  
the needle is as shown in the  
illustration.  
Approx. 25 mm Approx. 20 mm  
2336B  
4683Q  
9-13. Checking the machine head switch  
1. Turn on the power switch.  
2. Check that no error numbers appear on the operation  
panel.  
<If error [E050], [E051] or [E055] is displayed>  
If the machine head switch (1) is not turned on, error [E050],  
[E051] or [E055] will occur.  
Use the screw (2) to adjust the installation position of the  
machine head switch as shown in the illustration.  
2295B  
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10. TABLE OF ERROR CODES  
10. TABLE OF ERROR CODES  
DANGER  
Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet  
before opening the face plate of the control box. Touching areas where high voltages are present can result in  
severe injury.  
If a malfunction should occur with the sewing machine, a buzzer will sound and an error code will appear in the display  
window. Follow the remedy procedure to eliminate the cause of the problem.  
Warnings displayed as symbols  
Code  
Cause and remedy  
The sewing machine started when the work clamp/button clamp was not lowered.  
First lower the work clamp/button clamp.  
CLdn  
The needle bar is not in the needle up stop position.  
Turn the pulley until this error display disappears.  
UP  
Switch-related errors  
Code  
Cause and remedy  
The STOP switch was pressed.  
Press the RESET key to clear the error.  
E010  
The STOP switch was pressed.  
Press the RESET key to clear the error.  
E011  
You can press the  
key to move the work clamp so that you can continue sewing.  
The STOP switch was pressed.  
Press the RESET key to clear the error, and then depress the foot switch to the 2nd step to carry out home  
position detection.  
E012  
The STOP switch was still being pressed when the power was turned on, or there is a problem with the STOP  
switch connection.  
E015  
E016  
E025  
Turn off the power, and then check that connector P9 on the main P.C. board is properly connected.  
Problem with the STOP switch connection when the power was turned on.  
Turn off the power, and then check that connector P9 on the main P.C. board is properly connected.  
The foot switch was depressed to the 2nd step when the power was turned on.  
(Start switch for a two-pedal foot switch).  
Turn off the power and check the foot switch.  
The foot switch was depressed to the 1st step when the power was turned on.  
(Work clamp switch for a two-pedal foot switch).  
E035  
Turn off the power and check the foot switch.  
Machine head tilting was detected after the power was turned on.  
Turn off the power, and then return the machine head to its original position.  
Check that connector P14 on the main P.C. board is properly connected.  
Machine head tilting was detected while the sewing machine was operating.  
Turn off the power, and then check that connector P14 on the main P.C. board is properly connected.  
Machine head tilting was detected when the power was turned on.  
Turn off the power, and then return the machine head to its original position.  
Check that connector P14 on the main P.C. board is properly connected.  
An operation panel key was still being pressed when the power was turned on, or key is faulty.  
Turn off the power and check the operation panel.  
E050  
E051  
E055  
E065  
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10. TABLE OF ERROR CODES  
Upper shaft motor-related errors  
Code  
Cause and remedy  
Sewing machine has continued to be used for a certain period after the “GREASEUP” notification appears  
without the grease being applied (without the reset procedure being carried out).  
Apply grease and then carry out the reset procedure. (Refer to the service manual for the reset procedure.)  
Upper shaft did not stop at the needle up stop position when the sewing machine stopped.  
Turn off the power, and then check that there are no problems with the thread trimming mechanism and the  
machine motor mechanism.  
E100  
E111  
E121  
Thread trimming was not completed.  
Turn off the power, and then check if the cutting edges of the fixed knife and movable knife are damaged or worn.  
Sewing machine motor stopped due to a problem, or synchronizer is faulty.  
Turn off the power, and then turn the machine pulley to check if the machine has locked up.  
Check that connector P11 on the power supply motor P.C. board and the 4-pin upper shaft motor connector are  
properly connected.  
Synchronizer is not connected correctly.  
Turn off the power, and then check that connector P11 on the power supply motor P.C. board is properly  
connected.  
E130  
E131  
Problem detected with sewing machine motor operation.  
Turn off the power, and then check that connector P11 on the motor P.C. board is properly connected.  
Sewing machine motor stopping position is incorrect.  
Turn off the power, and then check that connector P11 on the motor P.C. board is properly connected.  
Sewing machine motor is overheating, or temperature sensor is faulty.  
E132  
E133  
Turn off the power, and then check the sewing machine motor.  
(When sewing data with a small number of stitches (15 stitches or less) is sewn repeatedly (short cycle  
operation), the upper shaft motor may overheat and the “E150” error code may be generated.)  
E150  
Feed mechanism-related errors  
Code  
Cause and remedy  
X feed motor home position cannot be detected. Problem with X feed motor or poor X encoder connection.  
Turn off the power, and then check that connectors P17 and P21 on the main P.C. board are properly connected.  
X feed motor stopped abnormally.  
Turn off the power and check that there is no problem with the X feed direction.  
X feed motor stopped abnormally during sewing.  
Turn off the power and check that there is no problem with the X feed direction.  
X-feed motor stopped due to a problem while moving to the sewing start position.  
Turn off the power and check that there is no problem with the X feed direction.  
X feed motor stopped abnormally during test feeding.  
Turn off the power and check that there is no problem with the X feed direction.  
Y feed motor home position cannot be detected. Problem with Y feed motor or poor Y encoder connection.  
Turn off the power, and then check that connectors P18 and P22 on the main P.C. board are properly connected.  
Y feed motor stopped abnormally.  
Turn off the power and check that there is no problem with the Y feed direction.  
Y feed motor stopped abnormally during sewing.  
Turn off the power and check that there is no problem with the Y feed direction.  
Y-feed motor stopped due to a problem while moving to the sewing start position.  
Turn off the power and check that there is no problem with the Y feed direction.  
Y feed motor stopped abnormally during test feeding.  
E200  
E201  
E204  
E205  
E206  
E210  
E211  
E214  
E215  
E216  
Turn off the power and check that there is no problem with the Y feed direction.  
Work clamp-related errors  
Code  
Cause and remedy  
Work clamp home position cannot be detected. Problem with work clamp motor or poor work clamp encoder  
connection.  
Turn off the power, and then check that connectors P19 and P23 on the main P.C. board are properly connected.  
Work clamp/button clamp raised or lowered position cannot be detected.  
Turn off the power, and then check that there is no problem with the vertical work clamp/button clamp position.  
E300  
E301  
73  
KE-430FX/KE-430FS, BE-438FX  
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10. TABLE OF ERROR CODES  
Communication and memory-related errors  
Code  
Cause and remedy  
Communication error detected between the main P.C. board and the panel P.C. board when the power was  
turned on.  
Turn off the power, and then check that connector P1 on the panel P.C. board and connector P3 on the motor  
P.C. board are properly connected.  
Communication error detected between the main P.C. board and the motor P.C. board when the power was  
turned on.  
Turn off the power, and then check that connector P5 on the main P.C. board and connector P2 on the motor P.C.  
board are properly connected.  
E400  
E401  
Communication error between main P.C. board and panel P.C. board detected.  
Turn off the power, and then turn it back on again.  
Communication error between main P.C. board and motor P.C. board detected.  
Turn off the power, and then turn it back on again.  
No media is inserted.  
E410  
E411  
E420  
Press the RESET key to clear the error.  
Data contents are incorrect and cannot be used, or no data.  
Press the RESET key to clear the error.  
Check that data for this pattern number is present in the media.  
Error occurred while reading from media.  
Press the RESET key to clear the error.  
Check the data in the media.  
Insufficient space in media.  
Press the RESET key to clear the error.  
E421  
E422  
E424  
Use different media.  
Error occurred while reading from media.  
Press the RESET key to clear the error.  
Use the specified type of media.  
E425  
Check if the media is write-protected and if it has enough free space.  
A pattern registered in a cycle program has been erased.  
Press the RESET key to clear the error.  
Re-register the cycle program, or add the pattern.  
A pattern registered in a program has been erased.  
Press the RESET key to clear the error.  
E427  
E428  
Re-register the program, or add the pattern.  
Data cannot be backed up to main P.C. board.  
Turn off the power, and then turn it back on again.  
Data memory error on main P.C. board.  
E430  
E440  
E450  
E451  
E452  
Turn off the power, and then turn it back on again.  
Model selection has not been loaded from the machine head memory.  
Turn off the power and check that connector P16 on the power supply motor P.C. board is properly connected.  
Data cannot be backed up to machine head memory.  
Turn off the power, and then turn it back on again.  
Machine head memory is not connected.  
Turn off the power, and then check that connector P16 on the main P.C. board is properly connected.  
Internal memory is full and copying is not possible.  
Press the RESET key to clear the error.  
E474  
Clear any unnecessary additional patterns.  
KE-430FX/KE-430FS, BE-438FX  
74  
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10. TABLE OF ERROR CODES  
Data editing-related errors  
Code  
Cause and remedy  
The enlargement ratio setting caused the sewing data to extend outside the sewing area.  
Press the RESET key to clear the error.  
Set the enlargement ratio again.  
The enlargement ratio caused the data pitch to exceed the maximum pitch of 12.7 mm.  
Press the RESET key to clear the error.  
Set the enlargement ratio again.  
E500  
E502  
E510  
E511  
E512  
Error in pattern data.  
Press the RESET key to clear the error.  
Re-read the pattern data from the media, or recreate the pattern data.  
No end code has been input into pattern data.  
Press the RESET key to clear the error.  
Recreate the pattern data containing the end code, or change the pattern number being read.  
Number of stitches exceeds allowed maximum.  
Press the RESET key to clear the error.  
Change the number of the pattern being read.  
Memory switch file cannot be read correctly.  
Copy source model and copy destination model are incorrect. (Maybe the 430FXFS is attempting to read data  
for the 438FX.)  
E581  
Press the RESET key to clear the error.  
Read data for the same sewing machine model.  
Memory switch versions do not match.  
Press the RESET key to clear the error.  
Read data for the same version.  
Parameter versions do not match.  
E582  
E583  
Press the RESET key to clear the error.  
Read data for the same version.  
Device-related errors  
Code  
Cause and remedy  
Thread nipper motor home position cannot be detected. Problem with thread nipper motor or poor thread nipper  
encoder connection.  
Turn off the power, and then clean underneath the needle plate to remove any dust and thread scraps.  
Check that connector P20 on the main P.C. board is properly connected.  
Thread nipper retract position error.  
E690  
E691  
Check if the upper thread trailing length is too long.  
Turn off the power, and then clean underneath the needle plate to remove any dust and thread scraps.  
Check that connectors P20 and P4 on the main P.C. board are properly connected.  
P.C. board-related errors  
Code  
Cause and remedy  
Abnormal rise in power supply voltage.  
Turn off the power and check the input voltage.  
Abnormal rise in sewing machine motor drive voltage.  
Turn off the power, and then check the voltage.  
Abnormal drop in power supply voltage.  
Turn off the power and check the input voltage.  
Abnormal current detected in sewing machine motor.  
Turn off the power, and then check if there are any problems with the sewing machine.  
Abnormal current detected in pulse motor.  
E700  
E701  
E705  
E710  
E711  
Turn off the power, and then check if there are any problems with the work clamp/button clamp operation.  
If an error code that is not listed above appears or if carrying out the specified remedy does not solve  
the problem, contact the place of purchase.  
75  
KE-430FX/KE-430FS, BE-438FX  
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11. TROUBLESHOOTING  
11. TROUBLESHOOTING  
• Please check the following points before calling for repairs or service.  
• If the following remedies do not fix the problem, turn off the power switch and consult a qualified technician or the place of  
purchase.  
CAUTION  
Turn off the power switch and disconnect the power cord before carrying out troubleshooting, otherwise the  
machine may operate if the foot switch is depressed by mistake, which could result in injury.  
Problem  
Cause  
Remedy  
Ref.  
Work clamp does not  
rise. (KE-430FXFS)  
Grease the sliding part of the work  
clamp.  
Work clamp operation is sluggish.  
P. 59  
Too much friction between work clamp  
lifter plate and work clamp arm lever  
plate.  
Grease the work clamp lifter plate and  
work clamp arm lever plate.  
Work clamp is contacting thread wiper.  
Work clamp is contacting thread wiper.  
Adjust the position of the thread wiper.  
Adjust the position of the thread wiper.  
Adjust the work clamp lift amount.  
P. 70  
P. 70  
P. 69  
Button clamp does not  
rise. (BE-438FX)  
Work clamp lift amount  
is incorrect.  
(KE-430FXFS)  
Incorrect position of work clamp arm  
lever plate  
Button clamp lift  
amount is incorrect.  
(BE-438FX)  
Incorrect position of button clamp holder  
hook.  
Adjust the button clamp lift amount.  
Adjust the height of the thread wiper.  
P. 69  
Thread wiper does not  
operate correctly.  
P. 70  
P. 71  
P. 71  
P. 28  
P. 28  
P. 77  
P. 30  
P. 31  
The thread wiper is obstructing the  
needle.  
Adjust the operating distance of the  
thread wiper.  
Adjust the operating distance of the  
thread wiper.  
Thread wiper position is incorrect.  
Lower thread winds to  
one side.  
Height of bobbin winder tension Adjust the height of the bobbin winder  
assembly is incorrect.  
tension assembly.  
Lower thread winding  
amount is incorrect.  
Adjust the position of the bobbin  
presser.  
Bobbin presser position is incorrect.  
Thread comes  
unthreaded.  
Stitches being skipped at the sewing  
start.  
Refer to “Skipped stitches occur”  
Adjust the sub-tension.  
Uneven needle thread.  
Needle thread is too short.  
Use a thread nipper device.  
KE-430FX/KE-430FS, BE-438FX  
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11. TROUBLESHOOTING  
Problem  
Cause  
Remedy  
Ref.  
Upper thread breaks.  
P. 63  
Upper thread tension is too strong.  
Adjust the upper thread tension.  
P. 26  
P. 30  
P. 64  
Needle is installed incorrectly.  
Install the needle correctly.  
Thread is too thick for the needle.  
Use the correct thread for the needle.  
Thread take-up spring tension and Adjust the tension and height of the  
height are incorrect. thread take-up spring.  
Damaged or burred rotary hook, needle File smooth or replace the affected  
hole plate or needle.  
part.  
P. 22  
P. 63  
Thread melting (synthetic thread)  
Use the needle cooler.  
Lower thread breaks.  
Lower thread tension is too strong.  
Adjust the lower thread tension.  
Corners of needle hole plate or bobbin File smooth or replace the affected  
case are damaged.  
part.  
Skipped stitches occur.  
Clearance between needle and rotary  
hook tip is too great.  
Adjust the needle clearance.  
P. 66  
P. 66  
P. 66  
Incorrect needle and rotary hook timing. Adjust the needle bar lift amount.  
Driver is contacting needle more than is  
Adjust the driver needle guard.  
necessary.  
Needle is bent.  
Replace the needle.  
P. 26  
P. 66  
P. 66  
Needle is installed incorrectly.  
Install the needle correctly.  
Adjust the needle clearance.  
Adjust the needle bar lift amount.  
Replace the needle.  
Needle breaks.  
Needle is touching the rotary hook.  
Needle is bent.  
Needle is too thin.  
Use the correct needle for the material.  
P. 30  
P. 42  
P. 42  
Needle is striking the button.  
(BE-438FX)  
Refer to “5-6. Checking the sewing  
pattern” .  
Button breaks.  
(BE-438FX)  
Refer to “5-6. Checking the sewing  
pattern” .  
Needle is striking the button.  
77  
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11. TROUBLESHOOTING  
Problem  
Cause  
Remedy  
Ref.  
Upper thread is not  
trimmed.  
Movable knife is blunt.  
Replace the movable knife.  
P. 68  
Fixed knife is blunt.  
Sharpen or replace the fixed knife.  
P. 68  
P. 67  
P. 66  
P. 77  
P. 68  
P. 30  
P. 64  
P. 66  
P. 67  
P. 67  
P. 63  
P. 30  
Adjust the position of the shuttle race  
thread guide.  
Movable knife does not pick up the  
thread.  
Adjust the needle bar lift amount.  
The movable knife does not pick up the  
thread because of skipped stitches at Refer to “Skipped stitches occur”.  
the sewing end.  
Adjust the position of the movable  
Movable knife position is incorrect.  
knife.  
Turn the sub-tension nut to adjust the  
Sub-tension is too weak.  
tension.  
Thread jamming.  
Thread take-up spring tension and Adjust the tension and height of the  
height are incorrect.  
thread take-up spring.  
Incorrect needle and rotary hook timing. Adjust the needle bar lift amount.  
Shuttle race thread guide is not Adjust the position of the shuttle race  
separating the threads.  
thread guide.  
Poor seam finish on  
Shuttle race thread guide is separating Adjust the position of the shuttle race  
the threads insufficiently.  
reverse  
side  
of  
thread guide.  
material.  
Upper thread is not properly tight.  
Adjust the upper thread tension.  
Uneven needle thread.  
Adjust the sub-tension.  
Adjust the sub-tension.  
<When using the thread nipper  
device>  
P. 30  
Needle thread is too long.  
Turn the tension nut to adjust the upper  
thread trailing length to 35 – 38 mm.  
Needle is striking the button.  
(BE-438FX)  
Refer to “5-5. Checking the sewing  
pattern”.  
P. 42  
P. 63  
P. 63  
P. 64  
P. 17  
P. 25  
Incorrect thread  
tightness.  
Upper thread tension is too weak.  
Lower thread tension is too weak.  
Adjust the upper thread tension.  
Adjust the lower thread tension.  
Thread take-up spring tension and Adjust the tension and height of the  
height are incorrect.  
thread take-up spring.  
Machine does not  
operate when power is  
turned on and foot  
Check if the machine head switch cord  
is disconnected.  
switch is depressed.  
Adjust the position of the switching  
plate.  
Machine head switch does not work.  
Replace the machine head switch if it is  
broken.  
KE-430FX/KE-430FS, BE-438FX  
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78  
12. 7-SEGMENT DISPLAY LIST  
12. 7-SEGMENT DISPLAY LIST  
4268M  
KE-430FX/KE-430FS, BE-438FX  
79  
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MEMO  
KE-430FX/KE-430FS, BE-438FX  
80  
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INSTRUCTION MANUAL  
* Please note that the contents of this manual may differ slightly from the actual product purchased as a result of product improvements.  
© 2013 Brother Industries, Ltd. All Rights Reserved.  
This is the original instructions.  
KE-430FX/KE-430FS, BE-438FX  
SB4760-001 E  
2013.08.B(1)  
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