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Maintenance
Regular Maintenance
Figure 43. Mower PTO Belt Routing
A. Spindle Pulley
B. PTO Drive Belt
C. Spring-loaded Idler Pulley
D. Stationary Idler Pulley
B
A
Figure 42. Mower PTO Belt
A. Idler Arm
B. Stationary Idler Pulley
C. Nut
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.
For 61” Decks:
Using a 1/2” breaker bar, place the
square end in the square hole located in the end of the
idler arm (A, Figures 42). Carefully rotate the breaker
bar COUNTER-CLOCKWISE, which will relieve the
tension on the belt exerted from the idler arm.
For 72” Decks:
Using the 3/4” combination wrench,
place the box end on the nut (A, Figure 42) that secures
the idler pulley located at the end of the idler arm.
Carefully roate the wrench CLOCKWISE, which will
relieve the tension on the belt exerted from the idler
arm.
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
NOTICE
To avoid damaging belts, DO NOT PRY BELTS OVER
PULLEYS.
B
C
B
D
A
A
A
D
D
C
4. Slide the drive belt over the edge of the stationary idler
pulley (B). Carefully release the tension on the breaker
bar or the combination wrench.
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 43).
6.
For 61” Decks:
Install the drive belt on the PTO pulley,
the spindle pulleys and all idler pulleys except the
stationary pulley (B, Figure 42). Carefully rotate the
breaker bar COUNTER-CLOCKWISE and install the belt
on the stationary idler pulley (B). Carefully release the
tension on the breaker bar.
For 72” Decks:
Install the drive belt on the PTO pulley,
the spindle pulleys and all idler pulleys except the
stationary pulley (B, Figure 42). Carefully rotate the
combination wrench CLOCKWISE and install the belt on
the stationary idler pulley (B). Carefully release the
tension on the combination wrench.
7. Reinstall the mower deck guards.
8. Run the mower under no-load condition for about 5
minutes to break-in the new belt.
61” Decks
72” Decks
72” Decks
61” Decks
