Toro 74271, Operator'S Manual

Page: 41 / 64

Figure 48
1. Oil cooler
Cleaning the Engine Fins
Every 100 hours clean the engine cylinder and
cylinder head cooling fins. Also clean around
carburetor, governor levers and linkage. This will
make sure adequate cooling to hydraulic pumps,
motors and engine and will reduce the possibility
of overheating and mechanical damage.
1. Remove the engine shroud.
2. Clean the engine cooling fins.
3. Install the engine shroud.
Figure 49
Brake Maintenance
Adjusting the Parking Brake
Check the parking brake for proper adjustment.
1. Disengage brake lever (lever down).
2. Measure the length of the spring.
The measurement should be 2-3/4 inch (70
mm) between washers (Figure 50).
Figure 50
1. Brake lever 4. Collar on brake rod
2. Spring (2-3/4 inches/70
mm)
5. 3/16–1/4 inch (5–7 mm)
3. Adjusting nuts 6. Jam nut and yoke
3. If adjustment is necessary, loosen the jam nut
below the spring and tighten the nut directly
below the yoke (Figure 50). Turn the nut until
the correct measurement is obtained. Tighten
the two nuts together and repeat on opposite
side of unit.
4. Turn nuts clockwise to shorten spring length
and turn counter-clockwise to lengthen the
spring.
5. Engage parking brake, lever up.
6. Measure the distance between the trunnion
roller and the collar on brake rod.
The measurement should be 3/16-1/4 inch
(5-7 mm) (Figure 50).
7. If adjustment is necessary, loosen the jam nut
directly below the yoke. Turn the bottom rod
until the correct measurement is obtained
(Figure 50). Tighten jam nut at yoke
Belt Maintenance
Inspecting the Belts
Inspect all belts every 100 hours.
Check belts for cracks, frayed edges, burn marks
or any other damage. Replace damaged belts.
Replacing the Mower Belt
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
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