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GB - 25
6. Adjust spring length.
NOTE: Approximately 1/8 in. (3 mm)
movement of the idler will change spring
extension by 1/8 in. (3 mm).
a.Loosen the idler adjustment nut.
b.To increase spring extension, move
idler towards belt (Figure 21).
c.To decrease spring extension, move
idler away from belt.
d.Tighten idler adjustment nut.
7. Place unit in service position. Remove
bottom cover by removing four cap
screws.
8. Check brake.
When the clutch lever is disengaged, the
brake must contact attachment belt.
When the clutch lever is engaged, the
brake must be more than 1/16 in.
(1.6 mm) away from the belt (Figure 19).
9. Repeat steps 4 – 7 until:
Spring stretch and brake contact are
correct.
10. Check belt finger clearance (Figure 21).
With clutch lever engaged, belt fingers
should be 1/16 – 1/8 in. (1.6 –3 mm) from
belt. Adjust belt fingers as necessary.
11. Replace bottom cover.
TRACTION DRIVE CLUTCH
ADJUSTMENT
If drive slips, adjust traction clutch to
compensate for friction disc wear.
To adjust traction clutch:
1. Place speed selector in First (1) Forward.
2. Place unit in service position.
3. With traction clutch disengaged turn
wheels while tightening adjustment nut
(Figure 18), at clutch yoke.
4. Engage and release traction clutch.
5. Turn wheels to check for slight drag.
6. Repeat steps 3 - 5 until wheels begin to
drag.
7. Turn adjustment nut back three turns.
Wheels will then turn freely.
DRIVE CHAIN
Chain should be taut with little or no play in it.
To compensate for looseness or excessive
tightness in drive chain:
1. Put unit into service position.
2. Remove bottom cover by removing four
cap screws.
3. Loosen nuts on idler hex shaft
(Figure 22). Adjust the idler hex shaft in
slot as necessary. Torque the nut to
70-146 lbf-in. (7.9 - 16.5 N•m).
Figure 18
OS1182
2
3
4
5
6
7
1
8
9
10
7/16 –11/16 in.
(11.1–17.5 mm)
1.Attachment
Clutch Cable
2.Cable Adjuster
3.Jam Nut
4.Clutch Cable
Spring
5.Lower Clutch
Arm
6.Lever Arm
7.Cotter Pin and
Washer
8.Adjustment Nut
9.Shift Rod
10.Traction Drive
Clutch Cable
Figure 19
1
2
1.Drive Belt
2.Brake Shoe and Pad
OS0660
Minimum of 1/16 in. (1.6 mm)