Toro 74701 - Inspecting the Belts; Replacing the Mower Belt

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Inspecting the Belts
Inspect all belts every 100 hours.
Check the belts for cracks, frayed edges, burn marks, or any
other damage. Replace damaged belts.
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
1. Stop the engine, set the parking brake, remove the key,
and disconnect the spark plug wire(s) from the spark
plug(s).
2. Set the height-of-cut at 1-1/2 inch (38 mm).
3. Remove the belt covers over the outside spindles.
4. Loosen the outer nut on the spring eye bolt (Fig. 43)
enough to allow removal of the belt.
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5
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Figure 43
Top View
1. Outer nut
2. Idler pulley
3. Idler arm
4. Spring eye bolt
5. Spring
6. 9-3/8 inch ± 1/8 inch
(238 mm ± 3 mm)
7. Mower belt
5. Remove the belt. Start at the outside pulley and rotate
the belt off (Fig. 44).
Note: Do not remove the spring.
The spring is under tension when installed and can
cause personal injury.
Do not remove the spring from the spring eye bolt.
Caution
6. Route the new belt through the idler arm (Fig. 43) and
onto the other pulleys (Fig. 44).
7. Tighten the outer nut on the spring eye bolt (Fig. 43).
Note: Check the spring length. The spring should measure
9-3/8 inch ± 1/8 inch (238 mm ± 3 mm) when installed
with the height-of-cut set at 1-1/2 inch (38 mm). Adjust it if
it does not (Fig. 43).
8. Install the belt covers over the outside spindles.
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Figure 44
Top View
1. Mower belt
2. Idler arm
3. Outside pulley
4. Spring
5. Idler pulley
Removing the Mower
1. Park the machine on a level surface, disengage the PTO,
set the parking brake, stop the engine, and remove the
key. Disconnect the spark plug wire(s) from the spark
plug(s).
2. Lower the height-of-cut lever to the lowest position.
3. Remove the hairpin cotter and clevis pin from the front
trunion yokes (Fig. 45).
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Figure 45
1. Hairpin cotter and clevis
pin
2. Front trunion