MSK-8400BL-18
MSK-8420BL-18
Industrial Sewing Machine
Instruction Manual
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CONTENTS
Operation instruction
1. Brief introduction
2. Main specifications
1
1
3. Machine installation and operation preparation
1. Machine installation
1
1-3
3-4
5-6
5
2. Operation preparation and notice before running
4. Machine operation
1. Coordination among needle, thread and materials
2. Install the needle
5
3. Winding the bobbin thread
5-6
6-9
6-7
7
5. Machine adjustment
1. Adjust the needle thread tension and bobbin thread tension
2. Adjust the pressure of presser foot
3. Adjust the safety clutch device
7-9
Parts manual
1. MSK-8420BL-18 machine casting components
2. MSK-8400BL-18 machine casting components
3. Upper shaft and presser foot components
4. Needle bar and lower feed components
5. Lower shaft thread looping components
6. Stitch length adjustment components
7. Knee lifter and winding components
8. Lubrication components
10-13
14-17
18-19
20-23
24-25
26-27
28-29
30-31
32-33
9. Accessories
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Operation instruction
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MSK-8420BL-18 machine adopts straight double needle
and two vertical auto-lubricating hooks for thread
looping, sliding lever for thread take up to form two
lines of lockstitch seam. The upper and lower shafts
are supported by needle bearing and driven by
toothed belt, plunger oil pump lubrication system,
compound feed mechanism of feed dog, walking
foot and needle, so even if for long stitch length or
sewing long materials, it can deal with them freely. .
Model
MSK-8400BL-18
MSK-8420BL-18
Applications
Medium and heavy weight materials
1200s.p.m
Max. Sewing speed
Max. Stitch length
Needle bar stroke
9mm
36mm
8mm by hand
Presser foot lift height
More than 16mm by pedal
Large vertical auto-lubricating hook
DP 17 Nm125 180
6.4mm (standard)
Auto-lubricating
Hook
MSK-8400BL-18 sewing machine adopts single
straight needle and vertical auto-lubricating hook for
thread looping, it has all of the advantages of
Needle
Needle gauge
MSK-8420BL-18.
.
Lubrication
Both of the models are widely used in the factories
of suitcase, tent, cushion, leather goods, apparel,
Special needle gauge available (mm):3.2,4,4.8,8,
9.5,12.7,16,19,25.4.
mat, etc.
.
1
1. Machine installation
1.1 Location of the machine
The machine must be located on the rigid and flat
floor for ensuring its smooth operation and reducing
its vibration. Meanwhile, a rubber mat should be
inserted between the machine stand and the floor for
further reducing therunning noise.
.
1.2 Install the oil pan (Fig. 1)
Put the oil pan into the table cutout and place the
four cushions on the four corners of the cutout,
finally fix the cushion and oil pan on the table by
nail.
.
2
1.3 Install the machine head (Fig. 2)
Make the hinge A of machine head engaged with
hinge socket B on the table, then turn the machine
head till it is seated on the frame of table cutout,
please keep theturning freely.
.
B
A
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1.4 Install the presser foot lifting controller (Fig. 3)
3
First connect the chain B with presser foot lift lever
C by hooks A, then install the pedal assembly D on
the rung of the stand, move the controller E leftward
or rightward to make the chain in one line, fix it
with bolt and nut, finally connect the hook with the
C
controller E.
.
A
(An automatic presser foot lifter is also available,
please refer to parts manual Part 7. "Knee lifter and
B
winding components")
.
E
D
1.5 Install the thread stand (Fig. 4)
4
The thread stand should be located on the right
backside of the table. Threading should be smooth
when sewing. When the machine head is turned
backward, it should not be touched with the thread
stand, then tighten the nut A.
.
A
1.6 Install the motor (Fig. 5)
5
Move the motor C leftward or rightward to make the
hand wheel belt groove A and motor pulley belt
groove B run in line.
.
A
B
C
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1.7 Connecting the clutch lever to the pedal (Fig. 6)
A. The optimum tilt angle of pedal against floor is
6
approx. 20 30 .
B. Adjust the clutch of motor so that the clutch lever
C and draw bar B run in line.
.
.
C. The machine hand wheel should rotate
counter-clockwise for normal sewing when view
from opposite side of balance wheel. The motor
should rotate in the same direction. The rotation can
be reversed by reversing the plug of motor (turn
G
F
10~12mm
E
D
C
over 180
)
.
D. Adjust the tension of V-belt F by moving the
motor up and down. The proper tension of V-belt is
a slack of 10 12mm when the belt is depressed at
B
A
the belt span by finger.
.
20 ~30
2. Operation preparation and notice before running
7
2.1 Clearing the machine
Before the head is packed, all of the parts of the
machine are coated with anti-rust grease, meanwhile
the grease can harden and the dust can cover the
machine, surface during long time storage and
shipment, so, the dust and grease must be cleared by
A
clean cloth with gasoline.
.
B
2.2 Examination
Although every machine is conformed by strict
inspection and test before delivery, the parts of the
machine may be loose and deformed after long
distance transportation with jolt. A thorough
examination must be performed. Turn the balance
wheel slightly by hand to check if there is running
obstruction, parts collision, uneven resistance and
abnormal noise. If any of these exist, adjustment
8
must be made accordingly before running.
.
2.3 Notice before running
A. Oiling (Fig. 7)
Oil amount should be filled according to the marks
in the oil pan, Mark A refers to the highest of oil
amount; Mark B refers to the lowest, be careful that
the oil amount should not be lower than Mark B,
otherwise the machine parts can not be fed with oil
and cause overheat and collision.
Please be sure to use machine oil 18# or HJ-7.
.
3
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B. When the machine starts for initial time or reuse
after a long time, the proper oil amount should be filled
in the sections of machine shown by arrows in Fig. 8,9.
When it is in operation, please observe the oil sparking
9
in oil screen to check the oil condition.
.
C. When a new machine starts running, for extending its
lift, please run at a medium and low speed (1000s.p.m)
for about a month and then raise the speed gradually.
D. Please turn off the power when it is not in use or the
operator leaves away from it.
.
.
E. Replace the oil every month, when replacing, fully
drain off the old oil in the oil pan and add the new one. .
F. For MSK-8420BL-18, the needle gauge options are: 6.4,
3.2,4,4.8,8,9.5,12.7,16,19,24.5mm. To get it, the needle
plate, inner and outer presser foot, needle holder, feed
dog, left and right sliding plate, thread guide should be
changed, the standard needle gauge is 6.4mm, for the
other needle gauge, the relevant parts can be ordered
10
Oil screen
from the factory.
.
11
Single
needle
A
1. Coordination amongneedle, thread and materials
Please use needle DP 17 or 135 17, Nm125 180, the
coarseness of needle should be in accordance with the
nature of materials. If stitching on heavy weight
materials with a slim needle, the needle will be broken
easily. Needle skipping or thread breakage will also
occur. On the contrary, stitch on tightly materials with a
very coarse needle, the materials will be destroyed
because of over-big needle hole, so the needle and
thread should be properly selected.
.
Long groove leftward
2. Install the needle (Fig. 11)
Turn the hand wheel to lift the needle bar to its highest
position, loosen the needle set screw A, fully insert the
needle shank up to the bottom of needle holder, keep the
long grooves of the two needles opposite with each
other, then tighten the set screw as shown in Fig.(a), For
single needle, keep the long groove of needle facing the
Clearance
left of the operator as shown in Fig.(b).
Note: Fig.(c) insufficient insertion or Fig. (D) wrong
direction of needle groove is incorrect.
.
.
4
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3. Winding the bobbin thread
12
3.1 The method of winding
Insert the bobbin B into winder shaft, threading the
thread A to upper and lower holes of pin E, then to
thread tension disc F, draw the thread tip and wind
thread several circles around bobbin B, put the
winding lever D into bobbin B, then it can automatic
winding when sewing. (If only winding, not sewing,
A
E
F
please lift the presser foot.)
.
Please don't overfill the bobbin thread, otherwise the
thread will loosen down from the bobbin. The
optimum capacity of bobbin thread is fill about 80%
of bobbin outside diameter, and this can be adjusted
by screw D. After finish, thread can be cut by thread
cutter shown in Fig. 12. Wind the thread A several
circles around cutter C, draw the thread and the
C
D
B
thread is cut.
.
3.2 Threading (Fig. 13)
13
A. Every thread should be drawn through thread hole
A, when using light and smooth thread (polyester or
long silk thread), it should be drawn through thread
hole B.
.
B. Keep the thread take-up lever at its highest
position, threading the needle thread in the following
Detailed picture
numerical order.
.
Thread
B
B
A
A
A
3.3 Stitch length (Fig.14)
14
The stitch length can be regulated by stitch length
dial A. Turn it counter-clockwise to expand its
length and clockwise to shorten its length. The
numbers on dial show the sizes of the stitch length in
mm.
.
For reverse feed, press down feed lever B to perform
reverse sewing. Release the lever, the feed lever can
reset automatic and the forward sewing is resumed. .
B
A
5
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3.4 Placing bobbin (Fig. 15)
Note: when bobbin is placed into the bobbin case, the
thread should be wound properly in the correct direction
15
Thread
Sliding plate
shown in the figure.
.
Hook
Hook
Sliding plate
3.5 Drawing thread from the bobbin (Fig. 16)
16
A. Draw the thread end to bobbin slot
figure, and pull it out down through the inner bobbin
stop piece.
shown in the
Thread
.
B. Hold the thread end with left hand, turn the hand
wheel slowly and get the bobbin thread, then draw them
a little apart from thepresser foot.
.
Thread
Inner stop piece
17
1. Adjust the needlethread tension and bobbin
thread tension
A
All forms of stitches are shown in Fig. 20
Normal stitch seam
The normal stitch of sewing machine is shown in Fig.
17A. If stitch is abnormal, the puckering and thread
breakage will occur, the needle thread tension and
bobbin thread tension should be adjusted so that the
B
C
Needle thread too tight or bobbin thread too loose
Needle thread too loose or bobbin thread too tight
normal stitch can be obtained.
.
6
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A. If the stitch seam shows as Fig. 17B, indicates
that the needle thread tension is too tight or the
bobbin thread tension is too loose. Please turn the
thread tension nut counter-clockwise to release the
needle thread pressure; or turn the bobbin lace
adjusting screw with a screwdriver to increase the
18
Loosen
bobbin thread tension.( See Fig. 18,19)
.
Tighten
Adjusting screw
B. If the needle thread tension is too loose or the
bobbin thread tension is too tight shown as Fig. 17C.
Please turn the thread tension nut clockwise to
increase the needle thread pressure; or turn the
bobbin lace adjusting screw with a screwdriver to
decrease the bobbin thread tension. (See Fig. 18,19).
For special sewing with special thread, the tension
needed can be obtained by adjusting the power and
19
Nut
Increase
stroke of the thread take-up spring.
.
Decrease
2. Adjust the pressure of presser foot (Fig.20)
20
The pressure of presser foot should be adjusted
according to the thickness of the sewing materials. If
stitch on heavy weight materials, the pressure should
be increased by turning the pressure adjusting screw
on the back of machine head clockwise, on the
Increase
Decrease
Pressure adjusting
screw
contrary, turn it counter-clockwise.
.
3. Adjust the safety clutch device
The function of safety clutch device is to prevent the
hook and toothed belt from being damaged when the
needle thread is drawn into the hook for abnormal
21
load during the operation.
.
Safety clutch device
Toothed-belt pulley
3.1 The function of safety clutch device (Fig.21)
A. When the safety clutch is functioning, the toothed
belt will remove the load and the hook shaft will stop
rotating, only the upper shaft still rotates, and the
machine stops work.
B. Clean off the needle thread which is draw into the
hook.
.
Shaft
.
C. Turn the toothed belt shaft by hand to check if the
hook shaft can turn smoothly, then reset the safety
Stopper
clutch device.
.
7
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3.2 How to reset the safety clutch device (Fig.22)
22
A. While press down the button on the bed surface with
left hand, turn the hand wheel slowly with right hand in
the direction shown in Fig. 22 (clockwise).
.
B. When the stopper brakes the hand wheel, more
strength is needed to turn the balance wheel to reset the
safety clutch device.
C. Release the button.
.
.
Handwheel
D. So the resetting is OK and put the bobbin into hook.
(See Fig.15)
.
Button
3.3 How toadjust the strengthon the safetyclutch
device (Fig.23)
23
White mark
Tighten
Eccentric pin
A. When the white mark of the eccentric pin aims at the
centre of the lower shaft, indicates that the strength on
the safety clutch is the minimum. When the white mark
points outward, the strength is properly increased.
.
Loosen
B. For adjusting the strength of it, move the belt and
loosen the set screw of eccentric pin, and turn the
Belt
eccentric pin.
.
.
Lower shaft
C. After adjustment, please tighten the set screw.
Set screw
3.4 Adjust the upper feed mechanism (Fig.23)
24
If the upper and lower feed are not in timing during
sewing, the longhole of thehorizontal feed crank(right)
Horizontal shaft crank (right)
should be adjusted to get the length of upper feed.
Adjusting as follows:
.
.
.
Link
A. Loosen the special stud.
B. Move the stud upward to decrease the amount of
upper feed.
Reference line
.
Upper layer feed decrease
Upper layer feed increase
C. Move the stud downward to increase the amount of
upper feed. Theoretically, when it is on the reference
line of the horizontal feed crank, the upper feed amount
Special stud
equals to thelower feed amount.
.
.
D. After adjustment, tighten the special stud.
8
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3.5 Adjust the vertical stroke of presser foot (Fig. 25)
When stitch on the very elastic materials or the
thickness of sewing materials changes, the
25
adjustment should be done in the following order:
A. Loosen the special stud.
.
.
B. When the central line distance between the special
stud and the presser foot lifting rear crank becomes
shorter, the vertical stroke of presser foot will
become longer, on the contrary, the distancebecomes
Crank
Increase
longer, the stroke will become shorter.
.
Crank link
C. After adjustment, tighten the special stud. The
common vertical stroke of presser foot can be
Decrease
adjusted within the range of 2 6mm.
.
Special stud
3.6 Adjust the hook oil amount (Fig. 26)
26
It adopts plunger full auto-lubricating system, even
at a very low speed, it still can supply and suck oil
very well. Generally, only the hook oil amount can
be adjusted, the others cannot be adjusted. The hook
oil amount can be controlled by the oil amount
adjusting screw. First loosen the nut of adjusting
screw, turn the screw clockwise to increase the oil
amount, on the contrary, decrease the oil amount.
Increase
Oil amount
adjusting screw
Decrease
After adjustment, tightenthe nut.
.
9
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Parts manual
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1.MSK-8420BL-18 machine casting components
10
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1.MSK-8420BL-18 machine casting components
Qt.
No.
Name
Part number
Remark
1
43WF1-001
Machine bed
1
1
2
1
3
1
1
4
1
2
1
15
15
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
43WF1-002
Machine arm
Pin
3
A6 30 GB117-86
M10 35 GB70-85
M10 35 GB5781-85
4
Screw
5
Screw
6
43WF1-003B
43WF1-004B
Model label
Brand label
Rivet
7
8
2.5 5 GB827-86
SM11/64" 40/8
SM11/64" 40/9
PE
Upper thread guide
9
1WF1-015
1WF1-016
1WF1-017
1WF1-011
22T1-007
1WF1-032
1WF1-038
1WF1-039
1WF1-019
1WF1-030
1WF1-027
1WF1-028
1WF1-003
1WF1-004
1WF1-005
1WF1-034
1WF1-036
1WF1-007
1WF1-006
1WF1-018
1WF1-013
1WF1-009
1WF1-008
1WF1-012
1WF1-021
1WF1-020
1WF1-035
1WF1-037
1WF1-023
1WF1-033
1WF1-040
1WF1-029
1WF1-022
1WF1-031
1WF1-014
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
Screw
Back cover
Screw
Washer
Cover
Front slide plate
Screw
SM11/64" 32/5.4
Thread take-up levercover
Back front cover
Screw
Spring
Thread retainer
Lower thread finger
Screw
SM9/64" 40/6.5
Screw
Screw
SM11/64" 40
SM9/64" 40
Screw
Middle thread finger
Rubber plug
Face plaft
Screw
8.5
SM3/16" 28
Upper thread finger
Guide set plate
Oil stopper setplate
Oil stopper
Needle plate
Pin shaft
Thread releasing lever
Right sliding plate
Left sliding plate
Rubber plug
Rubber plug
14.5
12.7
Back fitting cover
Rubber plug 12.7
11
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1.MSK-8420BL-18 machine casting components
12
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1.MSK-8420BL-18 machine casting components
Qt.
No.
Name
Part number
Remark
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
1WF1-010A
1WF1-010B
1WF1-010C
1WF1-010D
1WF1-010E
1WF1-010M
1WF1-010H
1WF1-010G
1WF1-010S
1WF1-010F
1WF1-010R
1WF1-010Q
1WF1-010J
1WF1-026
Thread tension fixingbracket assembly
Thread guide bracket
Thread guide plate
Spring
1
2
2
2
2
1
3
2
2
4
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
Thread guide bracket screw assembly
Thread releasing pin(short)
Thread tension nut
Thread tension spring
Thread releasing disc
Thread tension disc
Screw
Screw
Thread controlling discassembly
Screw
SM9/64" 40/4.5
SM/64" 40/4.5
1WF1-025
Stop plate
1WF1-010K
1WF1-010I
1WF1-024
Thread take-up spring
Thread take-up spring shaft
Screw
1WF1-010L
1WF1-010W
1WF1-010P
1WF1-043
Thread releasing pin (long)
Thread tension retainingplate
Thread releasing spring
Spring retaining plate
Screw
22T2-004
43WF1-006
35WF1-006
Rubber plug
Thread guide pin
13
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2.MSK-8400BL-18 machine casting components
14
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Qt.
No.
Name
Part number
Remark
1
44WF1-003
43WF1-002
Machine bed
Machine arm
Pin
1
1
2
1
3
1
1
4
1
2
1
15
15
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
3
A6 30 GB117-86
M10 35 GB70-85
M10 35 GB5781-85
4
Screw
5
Screw
6
44WF1-002
44WF1-005
Model label
Brand label
Rivet
7
8
2.5 5 GB827-86
9
1WF1-015
1WF1-016
1WF1-017
1WF1-011
22T1-007
1WF1-032
1WF1-038
1WF1-039
1WF1-019
1WF1-030
1WF1-005
9WF1-001
9WF1-002
1WF1-034
1WF1-036
1WF1-007
1WF1-006
1WF1-018
1WF1-013
1WF1-009
1WF1-008
1WF1-012
1WF1-021
1WF1-020
9WF1-004A
1WF1-043
1WF1-023
1WF1-033
1WF1-040
1WF1-029
1WF1-022
1WF1-031
1WF1-034
Upper thread guide
Screw
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
SM11/64" 40/8
SM11/64" 40/9
PE
Back cover
Screw
Washer
Cover
Front slide plate
Screw
SM11/64" 32/5.4
Thread take-up levercover
Back front cover
Screw
Lower thread finger
Oil felt
Screw
Screw
Screw
middle thread finger
Rubber plug
Face plate
Screw
8.5
SM3/16" 28
Upper thread finger
Guide set plate
Oil stopper setplate
Oil stopper
Needle plate
Right sliding platespring retainer
Thread releasing lever
Right sliding plate
Left sliding plate
Rubber plug
Rubber plug
14.5
12.7
Back fitting cover
Rubber plug 12.7
15
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16
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Qt.
No.
Name
Part number
Remark
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
1WF1-010A
1WF1-010B
1WF1-010C
1WF1-010D
1WF1-010E
1WF1-010M
1WF1-010H
1WF1-010G
1WF1-010S
1WF1-010F
1WF1-010R
1WF1-010Q
1WF1-010J
1WF1-026
Thread tension fixingbracket assembly
Thread guide bracket
Thread guide plate
Spring
1
1
1
1
1
1
1
1
1
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
Thread guide bracketscrew assembly
Thread releasing pin(short)
Thread tension nut
Thread tension spring
Thread releasing disc
Thread tension disc
Screw
Screw
Thread controlling discassembly
Screw
SM9/64" 40/4.5
SM/64" 40/4.5
Stop plate
1WF1-025
Thread take-up spring
Thread take-up spring shaft
Screw
1WF1-010K
1WF1-003A
1WF1-024
Thread releasing pin (long)
Thread tension retainingplate
Thread releasing spring
Screw
1WF1-010I
1WF1-010W
1WF1-010P
22T2-004
Rubber plug
43WF1-006
35WF1-006
Thread guide pin
17
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14
18
41
42
43 39 40
35 37 3811 8 54 13 14 15
16
36
44
45
33
7
52
4
3
6
19
17
21
22
34
10
2
55 56
1
46
49
23
29
32
48
47
5
9
8
24
25
26
27
12
50
51
20
31
30
28
13 53
18
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Qt.
No.
Name
Part number
Remark
1
2
3
4
5
6
7
8
43WF2-001
1WF2-022
1WF2-023
1WF2-024
1WF2-021
1WF2-020
1WF2-007
1WF2-010
1WF2-009
1WF5-026
Upper shaft
Upper shaft bushing(front)
Screw
Oil felt
Needle crank
Screw
Screw
Screw
Screw
Eccentric cam
Stop ring
Slot for frontcrank sliding block
Stop ring
Screw
Screw
Ball bearing
Upper shaft bushing (rear)
Screw
Hand wheel
Screw
Toothed belt
Spring plate
Pin
Spring
Split stop ring
Stop plate
Nail
Braking plate
Connector
Bushing
Screw
Screw
Nut
Link lever
Bolt
Washer
Oil pipe assembly
Spring
Presser foot lifting crank (rear)
Screw
Presser foot liftingcrank (front)
Screw
Bushing
Link lever
Screw
Screw
Presser foot liftingmovable plate
Rolling ball shaft
Rolling ball
Washer
Screw
1
1
1
1
1
1
1
3
1
1
1
1
3
3
1
1
1
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
1
2
2
1
1
1
1
1
1
2
2
1
1
1
2
1
SM1/4" 24/13
Wool felt
SM9/32"/28
SM1/4" 40/7
SM1/4" 40/4
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
25 GB894.1-86
1WF5-041
1WF2-026
1WF2-030
1WF2-029
SM15/64" 28/8.5
SM15/64" 28/15
1WF2-031
1WF2-019
1WF2-032
1WF2-044
1WF2-028
1WF2-039
1WF2-037
1WF2-041
SM15/64" 28/12
SM15/64" 28/4.5
3 GB896-86
1WF2-040
1WF2-048
1WF2-045
1WF2-042
1WF2-046
1WF2-047
1WF2-038
1WF5-001
1WF5-025
1WF5-044
SM15/64" 28/10.5
SM15/64" 28/10
Washer 6 GB95-85
1WF5-023
1WF5-024
1WF5-045
1WF4-018
1WF5-038
1WF5-028
1WF5-037
1WF5-030
1WF5-029
1WF5-032
1WF5-033
1WF5-034
1WF5-035
SM1/4" 24/16
SM1/4" 24/8
SM11/64" 40/6
Washer 4 GB848-85
SM11/64" 40/10
1WF5-042
1WF2-027
1WF2-037
43WF3-004
JO.0.40
Upper shaft timingpulley
Lower shaft timingpulley
Bobbin winding shaft
Screw
43WF2-003
Upper shaft bushing(middle)
19
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1
2
3
4
5 6
7
8 9 10 12 13
30
29
28
27
11
14
15
16
17
26
384043 42 44
43 45 42 46 47 48 49
1
18
19
22
20
21
25 2423
32
MSK-8420BL-18
33
34
41 39
36 37
31
MSK-8400BL-18
35
33
34
35
75 76 74 73
72 70
69 68
59 61 60 59
63 53
52
51
50
77
80
45
78
79
71
6766 64 65
54
57 56 62 58 45 57 56 55 54
20
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Qt.
No.
Name
Part number
Remark
2.5 80 cotton thread
1
2
1WF5-017
Oil wick
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
6
2
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
2
1
2
1
1
1
1
1
1WF5-018
1WF5-031
1WF5-019
1WF2-018
1WF2-017
1WF2-016
1WF2-011
1WF2-019
1WF2-012
1WF2-013
1WF2-014
1WF2-015
1WF2-008
1WF5-011
1WF5-013
1WF5-012
1WF2-007
1WF2-005
1WF2-006
1WF2-004
1WF2-001
1WF2-006
1WF5-010
22T1-007
1WF5-009
1WF5-036
1WF3-009
1WF5-014
1WF5-016
1WF5-015
1WF5-043
35T5-502
22T2-004
1WF2-003
35T1-103
1WF2-002
22T2-017
1F-009
Shaft for needlebar rocking frame
Screw
SM5/16" 28/10
3
SM15/64" 28/8
4
Screw
2.5 240 cotton thread
5
Oil wick
6
Bushing
7
Thread take-up lever
Thread take-up leversliding block
Screw
8
9
SM15/64" 28/12
10
11
12
13
14
15
16
17
18
19
20
21
Oil wick
3
25
Plug
Needle bar crankpin
Oil wick
3
80 cotton thread
Needle bar link
Needle bar rockingframe
Screw
SM3/32" 56/4.6
Shim needle barrocking frame
Oil felt
Needle bar connector
Screw
SM9/64" 40/8.5
MSK-8420BL-18
MSK-8400BL-18
Needle bar
Needle bar
22
23
24
25
26
27
28
29
30
31
rocking pressing bar
Screw
SM11/64" 40/12
Washer GB848-85
Washer
Needle bar holder guide
Pressing bar link
Screw
SM11/64" 40/15
Guiding plate
Spring
Spring bar
Inner presser foot
Inner presser foot
Screw
MSK-8420BL-18
MSK-8400BL-18
32
33
MSK-8420BL-18
MSK-8400BL-18
SM9/64" 40/4.3
MSK-8400BL-L18
DP 17 23#
Needle holder
Needle bar thread guide
Needle holder screw
Needle set screw
Needle
34
35
36
37
38
39
40
1WF5-007
1WF5-008
1WF5-020
Needle bar rockingsliding block
Sliding block shaft
Needle bar rocking left crank
Pin
A4 24 GB117-86
1WF5-021
Washer
21
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1
2
3
4
5 6
7
8 9 10 12 13
30
29
28
27
11
14
15
16
17
26
384043 42 44
43 45 42 46 47 48 49
1
18
19
22
20
21
25 2423
32
MSK-8420BL-18
33
34
41 39
36 37
31
MSK-8400BL-18
35
33
34
35
75 76 74 73
72 70
69 68
59 61 60 59
63 53
52
51
50
77
80
45
78
79
71
6766 64 65
54
57 56 62 58 45 57 56 55 54
22
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Qt.
No.
Name
Part number
Remark
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
1WF5-022
Screw
2
2
2
1
3
1
1
1
1
1
1
1
1
2
2
2
4
1
2
1
1
1
2
1
2
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
Bushing
1WF5-027
1WF5-028
43WF5-001
1WF4-018
1WF5-005
1WF5-004
1WF5-003
1WF5-049
1WF5-002
1WF5-046
1WF5-047
1WF5-001
1WF4-052
1WF2-023
1WF4-054
1WF2-009
1WF4-017
Screw
SM1/4" 24/8
Needle bar rocking shaft
Screw
Rear crank
Nut
Link lever
Screw
Feed shaft right crank
Pin
Washer
Nut
Feed shaft bushing
Screw
Collar
Screw
SM1/4" 40/4
Feed crank
Split stop ring
Crank pin
Stop ring 5 GB896-86
1WF4-019
1WF4-020
43WF4-001
1WF4-038
1WF4-035
1WF4-034
1WF4-030
1WF4-029
1WF4-036
1WF4-031
1WF4-001
9WF4-001
1WF4-032
Oil wick
3
55 cotton thread
Feed shaft
Oil felt
Wool felt
Connecting crank (left)
Screw
SM3/16" 28/12
Oil wick
2.5 430 cotton thread
Oil wick clamp
Crank shaft
Oil wick
Feed dog support
Feed dog support
MSK-8420BL-18
MSK-8400BL-18
SM15/64" 28/16
Washer 6 GB95-85
SM1/8" 40/7
71
72
73
74
Screw
Washer
Screw
1WF4-005
1WF4-004
9WF4-002A
1WF4-007
1WF4-008
1WF4-009
1WF4-002
1WF4-003
1WF4-033
Feed dog
Feed dog
MSK-8420BL-18
MSK-8400BL-18
SM1/8" 44/4
75
76
77
78
79
80
Screw
Oil felt
Wool felt
Feed dog lifting fork
Nut
Screw
Screw
SM1/8" 40/13.5
SM11/64" 40/6
23
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7
8
9
10
6
5
11
12
13
14
4
3
2
15
16
17
18
27
28
29
28
19
20
21
26
24
23 22
1
25
31 32
33
34 35
36 37
42 43 44 45
46 47 48 50 51 52
40
39
38
41
49
30
54
53
24
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Qt.
No.
Name
Part number
Remark
1
2
3
4
5
6
7
8
1WF2-063
1WF2-060
1WF2-059
1WF2-061
1WF2-064
1WF2-065
1WF2-070
1WF2-069
1WF2-072
1WF2-071
1WF2-075
1WF2-026
Right hook saddle
Screw
Upper bushing
Lower bushing
Rotary hook assembly
Bobbin
Oil wick
Hinge shaft
Screw
Link lever
Inner hook fingerbracket
Screw
SM14/64" 28
2.5 14 cotton thread
SM3/16" 32
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
SM9/64" 40/4.5
Washer4 GB848-85
Washer
1WF2-076
Inner hook finger
Washer
Nut
Upper bushing
Screw
Washer
Washer4 GB848-85
SM3/16" 32
1WF2-074
1WF2-062
1WF2-034
SM3/16" 28/14.5
Stop ring 6 GB95-85
SM1/4" 24/20
1WF2-033
1WF2-077
1WF2-067
1WF2-066
1WF2-044
1WF2-068
1WF2-052
1WF2-078
1WF2-009
1WF2-079
1WF2-055
1WF2-035
1WF2-036
43WF2-002
1WF2-006
1WF2-019
43WF2-004
1WF2-058
Screw
Lower bushing
Nut
Screw
Screw
Left hook saddle
Screw
Spiral gear
Screw
Spiral gaer
Feed link
Lower shaft bushing(left)
Oil wick
Lower shaft
Feed dog liftingcam
Screw
Lower shaft bushing(right)
Oil wick
Stop ring
Spring
Button
Screw
Feed cam
Feed link
Needle bearing
Stop ring
Lower shaft bushingassembly (middle)
Lower shaft bushing (rear)
Screw
Screw
Bearing
SM3/16" 28
SM3/16" 28/25.5
SM1/4" 40/5
SM1/4" 40/4
25 45 cotton thread
SM15/64" 28/12
2.5 85 cotton thread
Stop ring 5 GB896-86
1WF4-041
1WF4-042
1WF4-010
1WF4-011
1WF4-012
SM15/64" 28/13.5
Stop ring 26 GB894.1-86
1WF2-055
1WF2-051
1WF2-009
1WF2-052
SM1/4" 40/4
SM1/4" 40/5
1WF2-050
1WF2-049
1WF4-044
1WF4-043
Bearing pressing ring
Screw
Oil wick
SM9/64" 40/7
Pin
Note: the figure in the bracket is the parts quantity of MSK-8400BL-18
25
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2
3
4
5
6
8
7
10
2
9
12
16
1
15
18
13
14
19
17
24
29
30
11
20
22
2
23 21
28
26
27
24 25
26
Download from Www.Somanuals.com. All Manuals Search And Download.
Qt.
No.
Name
Part number
Remark
1
1WF4-025
Stitch length adjustingrocking lever
Screw
1
5
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
3
1
1
1
1
2
4
SM15/64" 28/8.5
SM15/64" 28/12
2
1WF4-030
1WF4-026
1WF4-014
1WF4-028
1WF4-046
1WF4-047
1WF4-027
1WF4-021
1WF4-048
1WF4-040
1WF4-049
1WF4-050
1WF4-051
1WF4-024
1WF5-006C3
43WF4-002
3
Set screw
4
Stitch length link
Eccentric shaft
Reverse feed shaft
Reverse feed crank
Screw
5
6
7
SM15/64" 28/13
SM15/64" 40/10.5
8
Screw
9
Reverse feed lever
Sliding block
Crank spring
Spring bracket
Screw
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
SM11/64" 40/8
Stop pin
Spring
Screw bar
'O' type seal
14 2.4 GB1235-86
Stitch length dial
Screw
1WF4-022
1WF5-009
1WF4-013
1WF4-015
1WF2-038
1WF4-016
1WF4-053
1WF4-057
1WF4-045
1WF4-039
1WF4-056
1WF1-011
Stitch length adjusting crank shaft
Stitch length adjusting crank
Screw
SM15/64" 28/10
SM15/64" 28/6
Screw
Collar
Reverse feed adjustingbracket
Oil wick
3
4
26 cotton thread
16 cotton thread
Oil wick
Guiding plate
Screw
SM11/64" 40/9
27
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22
23
14
15
16
17
19
18
25
24
26
2
3
4
21
20
11
28
29
12
27
6
5
1
7
8
13
9
10
50
44
31 30
37 36
52
49
32
33 34
35
48
47
46
51
45
44
43
38
42
41
Automatic presser foot lifter components
56
40
39
55
57
54
58 59
36
53
28
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Qt.
No.
Name
Part number
Remark
1
2
3
4
5
6
7
8
13WF4-027
13WF6-029
33T4-008C1
22T1-012F5
13WF6-028
13WF6-012
13WF6-014
13WF6-017
13WF6-018
13WF6-019
13WF6-001
13WF6-021
13WF6-022
13WF6-002
13WF6-006
13WF6-007
13WF6-008
13WF6-009
13WF6-010
13WF6-011
Screw
Nut
Thread tension spring
Thread tension disc
Thread tension shaft
Crank
Screw
Bobbin winding pulley
Screw
Friction ring
Winder base
Winding crank
Pin
Screw (lower)
Winding spanner
Spring lever
Screw
Screw
Screw
1
1
1
2
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
2
2
2
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
Winding spanner shaft
Stop ring
Stop ring 3.5 GB896-86
13WF6-015
13WF6-016
13WF6-005
13WF6-003
13WF6-004
13WF6-025
33WF6-020
13WF6-013
1WF5-040
1WF5-039
1WF3-011
1WF3-010
1WF3-013
1WF3-014
43WF3-001
1WF3-012-D
1WF3-015
1WF3-016
1WF3-001
9WF3-001
1WF3-002
1WF3-004
1WF3-005
1WF2-006
1WF3-023
1WF3-022
1WF3-007
1WF3-008
1WF3-009
1WF3-003
1WF3-023
1WF3-006
1WF3-018
1WF3-019-D
1WF3-017-D
43WF3-01-DB
Winder shaft
Locking ring
Bobbin thread trimmer
Screw (upper)
Spring
Spring
Positioning pin
Positioning pin
Slot for slidingblock
Screw
Screw
Nut
Screw
Spring
Knee lifting lever
Knee lifting lever
Screw
Presser bar springlever
Outer presser foot
Outer presser foot
Screw
Presser bar bushing
Presser bar springlever bracket
Screw
Presser foot liftingbar
Screw
Thread releasing plate
Presser bar guidingbracket
Screw
Presser bar
Screw
Thread releasing springlever
Screw
Crank assembly
Screw
Block
Solenoid assembly
Screw
Washer
SM1/64" 40/12
SM1/4" 24/16.5
(For presser foot lifter bypedal)
(For automatic presser foot lifter)
37
38
39
(MSK-8420BL-18)
(MSK-8400BL-18)
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
SM9/64" 40/8.5
SM11/64" 40/15
SM1/4" 24 23
PF-9
43WF3-01-DA
GB93-8
GB97.1-8
Washer
29
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3
4
6
7
8
10
11 12 13
14
9
5
15
2
1
49
21
48 20 26 20
16
17
21
47 16 46
18
40 41
42
19
20 21
44
43
45
23
23
25 24
26
22
39
27
28
16 38 23 37 36 23 35 34 16 31 30 29
32
33
30
Download from Www.Somanuals.com. All Manuals Search And Download.
Qt.
No.
Name
Part number
Remark
1
1WF6-001
Oil felt press spring
Screw
Oil felt
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
10
1
1
1
4
4
1
8
2
1
2
1
1
1
1
1
1
1
1
1
1
3
2
1
1
1
1
3
2
1
1
1
1
1
1
SM3/16" 28/12
Wool felt
2
1WF6-034
1WF6-003
1WF6-005A
1WF6-004
1WF6-007
1WF6-008
3
3D 0.5 60
Cotton thread
4
Oil pipe
Oil wick
Oil cup
5
6
7
Oil cup cover
Screw
Pin
M4 16 GB69-85
8
9
1WF6-009
1WF6-006
1WF6-010
1WF6-011
1WF6-002
1WF6-013
1WF6-012
1WF1-024
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Oil wick press spring
Oil pipe
3D
5D
1
1
400
400
Oil draining pipe
Oil wick
2.5 550 cotton thread
Oil pipe positioningclamp
Needle bar oil returning pipe
Screw
3D 0.5 150
SM9/64" 40/9
Washer 4 GB7246-87
Washer
1WF6-042
1WF6-014
1WF1-011
22T1-007
1WF6-021
1WF1-026
1WF2-053
1WF2-054
1WF6-027
1WF6-025
1WF6-024
1WF6-023
1WF6-026
1WF6-018
1WF6-019
1WF6-020
1WF6-017
1WF6-028
1WF6-035
1WF6-036
1WF6-038
Oil returning pipeclamp
Set spring
Screw
SM11/64" 40/9
Washer
Oil draining pipeend clamp
Screw
Screw
SM9/64" 40/4.5
SM11/64" 40/10
Bushing
Oil pipe
Plunger
3D
1
90
Plunger spring
Plunger spring stopper
Screw
SM1/8" 44/4.5
H62 brassiness
Oil filter
Washer
Filter net
Oil filter fixingplate
Oil pipe clamp
Oil pipe forright hook saddle
Oil pipe clamp
Oil tray assembly
Oil tray assembly
Oil wick
MSK-8420BL-18
MSK-8400BL-18
2.5 430 cotton thread
3D 0.5 410
39
40
41
42
43
44
45
46
47
48
49
1WF6-041
1WF6-040
1WF6-039
1WF6-034
1WF6-032
1WF6-037
1WF6-033
1WF6-030
1WF6-031
1WF6-029
1WF6-015
Oil pipe
Oil pipe
3D
1
445(MSK-8420BL-18)
Oil pipe clamp
Oil pipe
Oil wick
3D 0.5 220
2.5 300
2.5 240
Oil wick
Clamp
(MSK-8420BL-18)
Oil pipe clamp
Oil nozzle assembly
Oil filter fixingbracket
(MSK-8420BL-18)
31
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6
1
7
3
8
2
4
5
18
9
10
11
16
15
12
19
13
14
20
21
22
17
32
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Qt.
No.
Name
Part number
Remark
1
2
33TF-010
Parts bag
1
22T9-007F1
22T9-007F2
22T9-009
22T9-010
1WF2-065
33TF-011
33TF-016
1F-009
Casting hinge
Casting hinge cushion
Casting cushion (big)
Casting cushion
Bobbin
2
3
2
4
2
5
2
6
4
7
Oil pot
1
8
V-belt
1
'O' type 1050
9
Needle
1 bag
DP 17 23#
S=2.5MM
S=3MM
10
11
12
13
14
15
16
17
18
1F-011
Hexagon wrench
Hexagon wrench
Screwdriver (big)
Screwdriver (middle)
Screwdriver (small)
Needle thread guideassembly
Machine head cover
Oil tank
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1F-010
33TF-012
33TF-013
33TF-014
58T0-007C
22T9-018
1F-012
1F-014
Thread stand
(MSK-8420BL-18)
(MSK-8400BL-18)
33TF-019
22F9-012
22T9-001A2
22T9-001A3
43WF3-002
Thread stand
19
20
21
22
Magnet
Oil draining screw
Was h
SM5/16" 25/10
Oil pan
33
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