Replacing The Mower Belt; Replacing The Pump Drive Belt - Toro 74410 Operator's Manual

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 (Fig. 57).
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2
1
Figure 57
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 (Fig. 57).
7. Insert a ratchet with a short extension or a breaker bar
into the square hole in the fixed idler arm (Fig. 58).
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6
m–7711
4
4. Mower belt
5. Belt guide
6. Spring-loaded idler pulley
42
2
Figure 58
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 the outside spindles.

Replacing the Pump Drive Belt

Check the pump drive belt for wear after every
50 operating hours.
1. Remove the mower belt first; refer to Replacing the
Mower Belt on page 42.
2. Remove the bolt from the clutch stop and unplug the
clutch electrical wire (Fig. 59).
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m–7719
2. Square hole