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37
Mower Deck Drive Belt Replacement - 36”
Models
1. Park the unit on a smooth, level surface such as
a concrete floor. Disengage the PTO, engage the
parking brake, turn off the engine, and remove the
ignition key.
2. Remove the mower deck guard.
3. Remove the PTO drive belt (see PTO DRIVE
BELT REPLACEMENT for removal instructions).
4. Lower the mower deck to its lowest cutting
position.
5. Loosen the idler pulley bolt (A, Figure 46) 2 full
turns. DO NOT remove the nut.
6. Loosen the spring placement jam nut (B).
7. Rotate the spring adjustment nut (C) COUNTER-
CLOCKWISE to release the tension on the mower
deck drive belt adjustment spring (D). Slide the
adjustable idler pulley (E) towards the front of the
mower deck to remove all the tension from the
mower deck drive belt (F).
8. Remove the old belt and replace with a new
one. Install the new belt on the LH sprocket (G)
and make sure the belt is properly seated in the
chevron of the sprocket.
9. Refer to Figure 47. Align the holes in the
sprockets with the spindle mounting hardware as
shown. The blades will be perpendicular to each
other.
10. Install the belt on the RH sprocket (H, Figure 46),
again making sure the belt is properly seated in
the chevron of the sprocket.
11. Rotate the spring adjustment nut (C) CLOCKWISE
until the belt tension spring is compressed to
1-3/4” (4,45 cm) long.
12. Retighten the spring placement jam nut (B).
13. Tighten the idler pulley bolt (A) and torque to 55 ft.
lbs. (74.5 Nm).
14. Reinstall the PTO drive belt (see PTO DRIVE
BELT REPLACEMENT for re-installation
instructions).
Regular Maintenance
A
Figure 46. Mower Deck Drive Belt Removal
A. Idler Pulley Bolt
B. Spring Placement Jam Nut
C. Spring Adjustment Nut
D. Mower Deck Drive Belt Adjustment Spring
E. Adjustable Idler Pulley
F. Mower Deck Drive Belt
G. LH Sprocket
H. RH Sprocket
B
C
D
G
F
H
E
Figure 47. Blade Alignment
Not for
Reproduction