Replacing The Drive Belt - Toro Power Clear 721 Operator's Manual

Replacing the Drive Belt

Service Interval: Every 50 hours
Yearly
If the drive belt becomes worn, oil-soaked, excessively
cracked, frayed, or otherwise damaged, replace the
belt.
1. Remove the drive-belt cover by removing the 3
bolts as shown in
Figure 27
1. Drive-belt cover
2. Bolt (3)
3. Rotor-pulley bolt
4. Curved washer
5. Rotor pulley
2. Unhook the brake spring from the idler arm to
release the belt tension
3. Remove the screw and curved washer that
holds the rotor pulley
4. Remove the rotor pulley and the drive belt
(Figure 27).
5. Install the new drive belt, routing it as shown in
Figure 28.
Figure 27.
6. Drive belt
7. Rotor shaft
8. Brake spring (unhook from
idler arm here)
9. Idler pulley
10. Engine pulley
(Figure 27).
(Figure 27).
1. Brake spring (install on
idler arm here)
2. Idler pulley
Note:
Route the new drive belt first around the
engine pulley, then the idler pulley, and finally
around the loose rotor pulley positioned just
above the rotor shaft
6. Install the rotor pulley onto the rotor shaft
27).
7. Install the curved washer and the rotor-pulley
bolt and tighten them securely
Note:
The concave side of the curved washer
goes against the outside of the pulley.
g008238
8. Install the brake spring onto the idler arm
28).
9. Install the drive-belt cover with the bolts that you
removed in step 1.
Note:
Ensure that the drive belt is properly
adjusted and operating; refer to
Control Cable (page 11)
Control Cable (page
16
Figure 28
3. Engine pulley
4. Rotor pulley
(Figure 27).
(Figure 27).
Checking the
and Adjusting the
12).
g008317
(Figure
(Figure