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Troubleshooting, Adjustment & Service
Figure 39. Mower PTO Belt Routing
A. Spindle Pulley
B. PTO Drive Belt
C. Spring-loaded Idler Pulley
D. Stationary Idler Pulley
B
A
Figure 38. Mower PTO Belt
A. Idler Arm
B. Stationary Idler Pulley
B
MOWER BELT REPLACEMENT
1. Park the tractor 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. Lower the mower deck to its lowest cutting position
and remove the mower deck guards.
3. Using a 1/2” breaker bar, place the square end in the
square hole located in the end of the idler arm (A,
Figures 38). Carefully rotate the breaker bar
clockwise, which will relieve the tension on the belt
exerted from the idler arm.
4. Slide the drive belt over the edge of the stationary
idler pulley (B). Carefully release the tension on the
breaker bar.
5. Remove the old belt and replace with a new one.
Make sure the V-side of the belt runs in the pulley
grooves (Figure 39).
6. Install the drive belt on the PTO pulley, the spindle
pulleys and all idler pulleys except the stationary
pulley (B, Figure 38). Carefully rotate the breaker
bar clockwise and install the belt on the stationary
idler pulley (B). Carefully release the tension on the
breaker bar.
7. Reinstall the mower deck guards.
8. Run the mower under no-load condition for about 5
minutes to break-in the new belt.
To avoid damaging belts, DO NOT
PRY BELTS OVER PULLEYS.
WARNING
Use extreme caution when rotating the idler arm
with the breaker bar, due to the increased tension
in the spring as the idler arm is being rotated.
Injury may result if the breaker bar is prematurely
released while the spring is under tension.
C
D
A
A
A
D