Belt Maintenance; Inspecting The Belts; Replacing The Mower Belt - Toro 74901 Operator's Manual

Figure 74
Left-hand brake shown
1. Cable anchor
2. Hold threaded rod here
3. Measure
4. Locknut
10. Disengage the park brake. Turn the wheel hub by hand
in both directions relative to the caliper; no drag of the
caliper pad on the wheel hub is desired.
11. If there is no movement between the hub and the
caliper, then repeat the adjustment (drive release valves
must be in the released position on the hydros).
12. After adjusting the brakes on both sides of the mower,
cycle the brake handle a minimum of 6 times to allow
the cable to seat into the sheath and mounting tabs.
13. Check the spring length, engage the park brake, and
repeat steps 8 through 11 if the length is not in the
correct range.
14. Rotate the drive-wheel-release handle to the operating
position; refer to Using the Drive-wheel-release Valves
(page 27).
15. Install the rear tires and torque lug nuts between 122 to
129 N-m (90 to 95 ft-lb).
16. Remove the jack stands.
5. Caliper
6. Compression spring
7. Threaded rod
8. Hub

Belt Maintenance

Inspecting the Belts

Service Interval: Every 50 hours
Check the belts for squealing when the belt is rotating, blades
slipping when cutting grass, frayed belt edges, burn marks,
and cracks are signs of a worn mower belt. Replace the
mower belt if any of these conditions are evident.

Replacing the Mower Belt

Squealing when the belt is rotating, blades slipping when
cutting grass, frayed belt edges, burn marks, and cracks are
signs of a worn mower belt. Replace the mower belt if any of
these conditions are evident.
1. Disengage the PTO, move the motion-control levers to
the neutral-locked position, and set the parking brake.
2. Stop 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 inches) height-of-cut.
4. Remove the belt covers (Figure 75).
1
1. Push the tab down
5. Use a ratchet in the square hole in the idler arm to
remove tension on the idler spring (Figure 76).
6. Remove the belt from the mower-deck pulleys.
7. Remove the belt guide on the spring-loaded idler arm
(Figure 76).
8. Remove the existing belt.
9. Install the new belt around the mower pulleys and the
clutch pulley under the engine (Figure 76).
50
2
Figure 75
2. Remove the belt cover
G009036