Ferris 5900621 Operator's Manual page 51

PTO Drive Belt Removal
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. Release the hood cam latches and raise the hood
until it locks in place.
3. Release the rear guard cam latches and lower or
remove the rear guard.
4. Using a 3/4" box end wrench on the nut of the
spring-loaded idler pulley (A, Figure 50), rotate the
wrench CLOCKWISE to release the tension on
the PTO drive belt.
WARNING
Use extreme caution when rotating the idler
pulley with the wrench, due to the increased
tension in the spring as the idler pulley is being
rotated. Injury may result if the wrench is
prematurely released while the spring is under
tension.
5. Remove the belt from the stationary idler pulley
(B, Figure 50).
6. Carefully release the tension on the wrench.
7. Remove the belt from the PTO clutch pulley,
spring-loaded idler pulley and center spindle
pulley.
8. Pull the belt towards the rear of the machine until
free of the guide pulleys and belt keeps on the
rear of the mower deck.
PTO Drive Belt Replacement
1. From the rear of the mower deck, route the new
belt through the guide pulleys and belt keeps.
2. Install the belt on the center spindle pulley. Follow
the illustration in Figure 51 carefully. Make sure
the belt twists in the correct direction.
3. Install the belt over the PTO clutch pulley and the
spring loaded idler pulley. Again, follow the
illustration in Figure 51 carefully and make sure
the belt twists in the correct direction.
4. Using a 3/4" box end wrench on the nut of the
idler pulley (A, Figure 50), rotate the wrench
CLOCKWISE and install the belt on the stationary
idler pulley.
5. Carefully release the tension on the wrench.
Troubleshooting, Adjustment & Service
A
B
Figure 50. PTO Drive Belt Removal
A. Spring Loaded Idler Pulley
B. Stationary Idler Pulley
Spindle Drive Belt Removal &
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. Remove the PTO drive belt from the center
spindle pulley (see PTO DRIVE BELT REMOVAL
for instructions).
3. Using a 1/2" breaker bar, place the square end in
the square hole located near the end of the idler
arm
(A, Figures 52). Carefully rotate the breaker bar
CLOCKWISE, which will relieve the tension on the
belts 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.
4. Remove the belt from the trim side spindle pulley
(B, Figure 52).
5. Carefully release the tension on the breaker bar.
6. Remove the old belt and replace with a new one.
Make sure the V-side of the belt runs in the pulley
grooves (Figure 53).
7. Install the belt on all of the pulleys, except for the
trim side spindle pulley. Carefully rotate the
breaker bar CLOCKWISE and install the belt on
the trim side spindle pulley. Carefully release the
tension on the breaker bar.
8. Reinstall the PTO drive belt.
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