Belt Maintenance; Inspecting The Belts; Replacing The Mower Belt - Toro 74997 Operator's Manual

Belt Maintenance

Inspecting the Belts

Service Interval: Every 50 hours
Replace the belt if it is worn. The signs of a worn belt include
squealing while the belt is rotating; the blades slipping while
cutting grass; and frayed edges, burn marks, and cracks on
the belt.

Replacing the Mower Belt

1. Disengage the blade-control switch (PTO), move the
motion-control levers to the N
and set the parking brake.
2. Shut off the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Lower the mower to the 76 mm (3 inch) height-of-cut.
4. Remove the belt covers
Figure 79
5. Use a ratchet in the square hole in the idler arm to
remove tension on the idler spring
6. Remove the belt from the mower-deck pulleys.
7. Remove the belt guide on the spring-loaded idler arm
(Figure 80).
8. Remove the existing belt.
9. Install the new belt around the mower pulleys and the
clutch pulley under the engine
- position,
EUTRAL LOCK
(Figure 79).
(Figure 80).
(Figure 80).
1. Clutch pulley
2. Mower belt
3. Spring-loaded idler pulley
4. Ratchet
10. Install the belt guide on the idler arm
11. Using the ratchet in the square hole, install the idler
spring (Figure 80).
Note: Make sure to seat the spring ends in the anchor
grooves.
12. Install the belt covers
54
Figure 80
5. Square hole in the idler
arm for the ratchet
6. Idler-grease fitting
7. Belt guide
(Figure
(Figure 81).
80).