Sears Lawn Aerator 45 04381 User Guide

OWNERS  
MANUAL  
Model No.  
45-04381  
40" FRONT MOUNT  
TINE DETHATCHER  
Safety  
Assembly  
Operating  
Maintenance  
Repair Parts  
CAUTION:  
Read Rules for  
Safe Operation  
and Instructions  
Carefully  
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FORM NO. 42688 (09/12/12)  
PRINTED IN USA  
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6
1
2
3
4
5
7
8
10  
12  
11  
9
REF PART NO. QTY DESCRIPTION  
REF PART NO. QTY DESCRIPTION  
1
2
3
4
5
6
44326  
43063  
43001  
43087  
43069  
12  
2
4
2
4
Carriage Bolt, 5/16-18 x 1"  
Hex Bolt, 5/16-18 x 1"  
Hex Bolt, 3/8-16 x 1"  
Hex Bolt, 3/8-16 x 1-1/4"  
Carriage Bolt, 3/8-16 x 1-1/2"  
Flat Washer, 5/8"  
7
8
9
10  
11  
12  
43343  
46838  
44044  
43055  
47810  
6
4
1
1
14  
10  
Hairpin Cotter, 1/8"  
Spacer, .8" x 1" x .5"  
Clevis Pin, 3/8" x 3/4"  
Hairpin Cotter, 3/32"  
Nylock Nut, 5/16-18  
Nylock Nut, 3/8-16  
R19212113  
4
HA21362  
17  
18  
15  
14  
16  
13  
22  
21  
23  
19  
20  
26  
25  
27  
24  
REF PART NO. QTY DESCRIPTION  
REF PART NO. QTY DESCRIPTION  
13  
14  
15  
16  
17  
18  
19  
20  
24876  
23668  
62600  
23666  
62601  
43943  
27453  
26043  
2
1
1
2
1
1
1
1
Mounting Arm  
Axle Bushing  
Lift Handle  
Angle Mount Bracket  
Lift Handle Bracket  
Plastic Grip  
21  
22  
23  
24  
25  
26  
27  
24043  
23673  
24874  
44148  
23676  
44213  
27452  
1
1
1
1
2
1
1
Lift Handle Arm  
Handle Lock Bracket  
Tine Shield  
Axle  
Keeper Plate  
Wheel  
Hitch Plate  
Mounting Shaft  
Frame Mount Bracket  
3
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Remove any front mounted attachments which may  
be installed on your tractor.  
Stop engine and let muffler cool before  
attempting to install dethatcher hitch  
brackets.  
Mark all loose parts and save for reassembly.  
1
1
LEFT END  
17  
17  
1
23  
x 1  
x 2  
TINES POINT  
TO FRONT  
11  
x 2  
11  
2
23  
16  
1
16  
11  
x 2  
x 4  
1
x 4  
11  
3
13  
14  
4
14  
1
11  
x 1  
1
x 4  
x 2  
11  
12  
x 4  
12  
x 2  
4
13  
x 2  
4
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4
26  
7
APPLY OIL  
24  
6
x 1  
x 1  
6
7
26  
24  
x 1  
x 2  
5
6
7
7
6
x 2  
x 1  
6
7
20  
x 1  
20  
7
x 2  
5
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ATTACHING DETHATCHER TO TRACTOR  
7
If the front of your tractor has front mounting holes as  
shown in figure 7, continue on to figure 8.  
If the front of your tractor DOES NOT have front  
mounting holes, go to figure 9.  
FRONT MOUNTING HOLES  
8
Remove two self threading bolts (if present) from  
front cross-member of tractor. Assemble bolts through  
lower slots in hitch bracket, then reinstall them back  
into front crossmember. (Make sure notches at top of  
hitch bracket and crossmember are aligned.)  
SELF THREADING BOLT  
FRONT  
From behind tractor's front crossmember, insert two  
3/8" x 1" hex bolts (3) through holes in crossmember  
and through upper slots in hitch bracket. Secure with  
two 3/8" nylock hex nuts (12).  
3
Go to figure 11 on page 7.  
12  
SELF THREADING BOLT  
19  
FIGURES 9 AND 10 ARE ONLY FOR TRACTORS WITH NO FRONT MOUNTING HOLES. FOR  
ALL OTHER TRACTORS CONTINUE TO FIGURE 11.  
9
27  
27  
3
19  
x 1  
x 1  
3
19  
12  
12  
x 4  
x 4  
6
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10  
Assemble the frame mount bracket (27) to the tractor  
frame using four 3/8" x 1-1/2" carriage bolts (5),  
spacers (8) and 3/8" nylock nuts (12). The spacers (8)  
go between the tractor frame and the frame mount  
bracket.  
8
12  
5
27  
11  
21  
11  
1
1
22  
x 1  
x 2  
21  
22  
11  
x 2  
x 1  
12  
FRONT  
11  
2
x 2  
21  
x 2  
11  
19  
21  
x 1  
19  
2
x 1  
7
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13  
Attach dethatcher to hitch plate by placing mounting  
shaft into slots at front of hitch plate. Dethatcher  
mounting arms go to inside of hitch plate. Assemble  
keeper plates onto ends of mounting shaft and secure  
with (large) 1/8" hairpin cotters.  
FRONT OF TRACTOR  
SLOT  
HITCH  
PLATE  
MOUNTING  
SHAFT  
(LARGE) 1/8"  
HAIRPIN COTTER  
KEEPER  
PLATE  
14  
15  
18  
10  
x 1  
x 1  
15  
18  
22  
21  
17  
10  
x 1  
9
x 1  
17  
9
x 1  
15  
Raise and lock dethatcher in transport position (see  
operation instructions on pages 9 and 10). Move  
tractor with front mounted dethatcher onto a level  
surface, such as a drive or garage floor. Lower the tine  
dethatcher from transport position to rest on the level  
surface.  
MOUNTING  
ARMS  
AXLE  
BUSHING  
ANGLE BRACKETS  
Adjust tine shield until spring tines come in contact  
with level surface, keeping front and back tines at  
the same height. Tighten carriage bolts securing  
mounting arms to angle brackets. See figure 15.  
TINE SHIELD  
TINES  
If you need more adjustment, try moving the axle  
bushing up or down between the mounting arms. Be  
sure to retighten the bolts securing the bushing.  
GROUND  
8
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CUSTOMER RESPONSIBILITIES  
Read and follow the maintenance schedule and the maintenance procedures listed in this section.  
MAINTENANCE SCHEDULE  
Fill in dates as you  
complete regular service.  
Service Dates  
Check for loose fasteners  
Lubrication  
X
X
CHECK FOR LOOSE FASTENERS  
LIFT HANDLE  
Before each use check all nuts and bolts for  
tightness. Tighten loose fasteners before using.  
SMALL HAIRPIN COTTER  
LUBRICATION  
Before each use apply a small amount of motor oil  
between washer and wheel bearing and between  
washer and top of axle bushing. See figure 16.  
HANDLE LOCK  
BRACKET  
OIL  
LIFT HANDLE  
ARM  
CLEVIS PIN  
LIFT HANDLE  
BRACKET  
OIL  
FIGURE 16  
FIGURE 17  
OPERATING TIPS  
De-thatching is recommended for early spring, late fall and  
prior to fertilizing. It is not recommended to de-thatch with  
every mowing of the lawn. The tine dethatcher can be easily  
removed for storage (Maintenance/Storage).  
(Refer to figure 18).  
Remove the two outside (large) 1/8" hairpin cotters  
from mounting shaft and slide keeper plates off ends  
of mounting shaft.  
Always start with transmission in first (low) gear and  
gradually increase speed as conditions permit.  
Do not attempt to use dethatcher in field mowing.  
For best results, use a "criss-cross" pattern on your lawn.  
Vary vehicle speed to determine best speed.  
The front and rear tines should be kept level.  
Stop vehicle and lift dethatcher to transport position  
when making sharp turns.  
Lift dethatcher from hitch bracket slots.  
Reassemble hairpin cotters and keeper plates to  
mounting shaft for storage.  
MOUNTING  
SHAFT  
SLOT  
STORAGE  
Always store in a dry area, and coat spring tines with  
light oil when not in use.  
TO REMOVE DETHATCHER FROM TRACTOR  
(Refer to figure 17).  
HITCH  
PLATE  
KEEPER  
PLATE  
Lower dethatcher to ground.  
Remove 3/32" (small) hairpin cotter and 3/8" x 3/4"  
clevis pin from lift handle. Remove handle from  
handle lift bracket.  
(LARGE) 1/8"  
(LARGE) 1/8"  
HAIRPIN  
Slide lift handle out between lift handle arm and  
handle lock bracket.  
HAIRPIN COTTER  
COTTER  
FIGURE 18  
9
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Leveling the dethatcher  
KNOW YOUR DETHATCHER  
Move tractor with front mounted dethatcher onto a level  
surface, such as a drive or garage floor.  
Lower dethatcher from transport position to rest on  
level surface.  
LIFT HANDLE  
Loosen carriage bolts through mounting arms and  
angle brackets. (Refer to figure 3 on page 5.)  
Adjust tine shield until spring tines come in contact with  
level surface, keeping front and back tines at same  
height. Tighten mounting arm carriage bolts on top of  
dethatcher shield to lock adjustment. See figure 20.  
If you need more adjustment, try moving the axle  
bushing up or down between the mounting arms. Be  
sure to retighten the bolts securing the bushing. See  
figure 20.  
HANDLE  
LOCK  
BRACKET  
MOUNTING  
ARMS  
AXLE  
BUSHING  
ANGLE BRACKETS  
LIFT HANDLE  
Raises and lowers  
dethatcher.  
HANDLE LOCK BRACKET  
Locks lift handle in raised  
transport position.  
TINE SHIELD  
TINES  
GROUND  
FIGURE 20  
HOW TO USE YOUR DETHATCHER  
To raise dethatcher to transport position:  
To replace a spring tine:  
a. Use a screw driver to pry the tabs up off of the  
spring tine.  
b. Remove old spring tine from the tray.  
c. Slide a new spring tine under the locking tabs.  
Insert a screw driver and bend down the locking  
tabs until the ends of the tabs are bent down  
even with the surface of the tray. See figure 21.  
Pull lift handle back so that stud in handle is pulled  
past handle lock bracket. Push down and forward on  
handle so that stud falls into notch on handle lock  
bracket to lock in position. See figure 19.  
To lower dethatcher to work position:  
Pull back and up on handle to release stud from notch  
in handle lock bracket. Lower by holding up on handle  
and pushing forward, allowing stud to pass through  
lock bracket. See figure 19.  
SCREW  
DRIVER  
POCKET  
STUD  
NOTCH  
FIGURE 19  
FIGURE 21  
10  
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40" TINE DETHATCHER MODEL 45-04381  
11  
18  
1
27  
22  
21  
5
8
15  
12  
2
12  
10  
25  
7
9
1
3
17  
1
19  
11  
12  
16  
7
20  
11  
13  
23  
7
16  
1
A
7
A
7
25  
6
6
13  
4
14  
24  
11  
28  
11  
6
6
29  
26  
7
REF PART NO. QTY DESCRIPTION  
REF PART NO. QTY DESCRIPTION  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
44326  
43063  
43001  
43087  
43069  
12  
2
4
2
4
4
6
4
1
Carriage Bolt, 5/16-18 x 1"  
Hex Bolt, 5/16-18 x 1"  
Hex Bolt, 3/8-16 x 1"  
Hex Bolt, 3/8-16 x 1-1/4"  
Carriage Bolt, 3/8-16 x 1-1/2"  
Flat Washer, 5/8"  
Hairpin Cotter, 1/8"  
Spacer, .8" x 1" x .5"  
Clevis Pin, 3/8" x 3/4"  
Hairpin Cotter, 3/32"  
Nylock Nut, 5/16-18  
Nylock Nut, 3/8-16  
Mounting Arm  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
23666  
62601  
43943  
27453  
26043  
24043  
23673  
24874  
44148  
23676  
44213  
27452  
43783  
47633  
42688  
2
1
1
1
1
1
1
1
1
2
1
1
10  
2
1
Angle Mount Bracket  
Lift Handle Bracket  
Plastic Grip  
Hitch Plate  
Mounting Shaft  
Lift Handle Arm  
Handle Lock Bracket  
Tine Shield  
Axle  
Keeper Plate  
Wheel  
Frame Mount Bracket  
Spring Tine  
Wire, Spring Alignment  
R19212113  
43343  
46838  
44044  
43055  
47810  
HA21362  
24876  
23668  
1
14  
10  
2
1
1
Axle Bushing  
Lift Handle  
Owners Manual  
62600  
11  
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REPAIR PARTS  
Agri-Fab, Inc.  
809 South Hamilton  
Sullivan, IL. 61951  
217-728-8388  
© 2006 Agri-Fab, Inc.  
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