Belt Maintenance; Servicing The Engine Drive Belt - Toro 25430A Operator's Manual

Belt Maintenance

Servicing the Engine Drive
Belt
WARNING
Stop the engine and remove the ignition key before
you begin to perform any maintenance or repair
work.
WARNING
Contacting a rotating belt can cause serious injury
or death.
Always stop the engine and remove the ignition key
before working near belts.
Checking the Condition of the Belt
Service Interval: Every 250 hours
1. Remove the right-side panel; refer to Removing the
Side Panels (page 35).
2. Inspect the belt for cuts, cracks, loose cords, grease, oil,
twisting, or signs of abnormal wear.
Note: Replace the belt if it is excessively worn or
damaged; refer to Installing the Belt (page 60).
3. Install the right-side panel; refer to Installing the Side
Panels (page 36).
Checking the Tension of the Belt
Service Interval: Every 1,000 hours
1. Remove the right side panel; refer to Removing the
Side Panels (page 35).
2. Place a straight edge over the drive belt and across the
pulleys (Figure 83).
3. Press the belt down at the midway point between the
fan pulley and the alternator pulley as shown in Figure
83.
Note: The range of belt deflection between the
straight edge and the belt should be 7 to 9 mm (0.28 to
0.35 inches) under a load of 10 kg (22 lb).
4. If the tension of the belt is above or below the specified
range, adjust the drive belt tension; refer to Adjusting
the Tension of the Belt (page 58).
5. Install the right side panel; refer to Installing the Side
Panels (page 36).
Adjusting the Tension of the Belt
1. Loosen the nut and bolt at the pivot point for the
alternator (Figure 84).
58
Figure 83