Belt Maintenance; Inspecting The Belts; Replacing The Mower Belt; Replacing The Pump Drive Belt - Toro 74441 Operator's Manual

Belt Maintenance

Inspecting the Belts

Service Interval: Every 100 hours
Inspect all belts every 100 hours.
Check belts for cracks, frayed edges, burn marks or any
other damage. Replace damaged belts.

Replacing the Mower Belt

The signs of a worn mower belt are squealing while the
belt is rotating, blades slipping while you are cutting
grass, frayed belt edges, burn marks, and cracks. Replace
the mower belt if you detect any of these signs.
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. Remove the belt covers over the outside spindles.
4. Loosen the fixed idler arm and adjust it to relieve the
belt tension on the fixed idler pulley (Figure 49).
Figure 49
1. Fixed idler arm
2. Square hole
3. Fixed Idler pulley
5. Remove the old belt.
6. Install the new belt through the belt guide and on
the pulleys (Figure 49).
7. Insert a ratchet with a short extension or a breaker
bar into the square hole in the fixed idler arm
(Figure 50).
4. Mower belt
5. Belt guide
6. Spring-loaded idler pulley
1. Ratchet with short
extension or breaker
bar
8. To increase the belt tension, rotate the ratchet or
breaker bar counterclockwise to move the fixed
idler arm until you feel increased resistance and the
spring-loaded idler pulley stops moving.
Note: Do not increase the belt tension beyond the
point where the fixed idler arm stops.
9. While holding the belt in tension, tighten the 2 bolts
that secure the fixed idler arm.
10. Remove the ratchet or breaker bar from the square
hole in the fixed idler arm.
11. Install the belt covers over the outside spindles.

Replacing the Pump Drive Belt

Service Interval: Every 50 hours
Check the pump drive belt for wear after every 50
operating hours.
1. Remove the mower belt first; refer to Replacing the
Mower Belt.
2. Remove the bolt from the clutch stop and unplug
the clutch electrical wire (Figure 51).
3. Pull the spring loaded idler to the side.
4. Remove the traction belt from the engine and the
hydraulic pump pulleys (Figure 51).
5. Install the new belt around the engine and the
hydraulic pump pulleys (Figure 51).
6. Pull the spring-loaded idler to the side and align the
belt.
7. Release the pressure on the spring loaded idler
(Figure 51).
8. Install the mower belt.
38
Figure 50
2. Square hole