Belt Maintenance; Checking The Belts; Replacing The Mower Belt - Toro 39988 Operator's Manual

4. Rotate the lower brake link yoke clockwise into the
yoke to tighten the parking brake; rotate the brake
link yoke counterclockwise out of the yoke out to
loosen the parking brake (Figure 46).
Note: There should be approximately 1/4 inch
clearance between the tire and the flat bar when the
parking brake in the released position (Figure 46).
5. Secure the lower link to the lower brake lever with
the hair pin cotter and the clevis pin (Figure 46).
6. Check the brake operation again; refer to Checking
the Parking Brake.

Belt Maintenance

Checking the Belts

Check all belts after every 50 operating hours or
monthly, whichever occurs first.
Look for dirt, wear, cracks and signs of overheating.

Replacing the Mower Belt

1. Disengage the blade control (PTO) lever and set the
parking brakes.
2. Stop the engine and wait for all moving parts to stop
before leaving the operating position.
3. Remove the knobs and the belt cover on the mower.
4. Remove the idler pulley and the worn belt (Figure 47).
5. Install the new mower belt.
6. Install the idler pulley.
7. Engage the blade control (PTO) lever and check
the belt tension. Refer to Adjusting the Mower Belt
Tension.
Note: The proper mower belt tension is 10-15 lbf.
(44-67 N) with the belt deflected 1/2 inch (13 mm)
halfway between the pulleys (Figure 47).
1. Mower belt with 1/2 inch
(13mm) deflection
39
Figure 47
2. Idler pulley