Brake Maintenance; Adjusting The Parking Brake; Belt Maintenance; Inspecting The Belts - Toro 74448 Operator's Manual

Brake Maintenance

Adjusting the Parking Brake

Check the parking brake for proper adjustment.
1. Disengage the brake lever (lever down).
2. Measure the length of the spring; the measurement
should be 2-3/4 inch (74 mm) between the washers
(Figure 43).
Figure 43
1. Brake lever
2. Spring, 2-3/4 inch (74 mm) 6. Jam nut and yoke
3. Adjusting nuts
4. Collar on brake rod
3. If an adjustment is necessary, do the following:
A. Loosen the jam nut below the spring and tighten
the nut directly below the yoke (Figure 43).
B. Turn the nut until you obtain the correct
measurement.
C. Tighten the 2 nuts together and repeat on the
opposite side of the machine.
4. Turn the nuts clockwise to shorten the spring length;
counterclockwise to lengthen the spring.
5. Engage the parking brake, with the lever up.
6. Measure the distance between the trunnion roller
and the collar on the brake rod. The measurement
should be 3/16 to 1/4 inch (5 to 7 mm) (Figure 43).
7. If an adjustment is necessary, do the following:
A. Loosen the jam nut directly below the yoke.
B. Turn the bottom adjusting nuts until the correct
measurement is obtained (Figure 43).
C. Tighten the jam nut at the yoke.
5. 3/16 to 1/4 inch (5 to
7 mm)
7. Trunnion

Belt Maintenance

Inspecting the Belts

Service Interval: 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 44).
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