Replacing The Engine Drive Belt - Toro 25430A Operator's Manual

1. Adjustment bolt
2. Nut (alternator pivot point)
2. Loosen the adjustment bolt on the alternator (Figure
84).
3. Loosen the bolt on the mounting bracket on the engine
(if necessary).
4. Move the alternator away from the engine to increase
the belt tension; move the alternator toward the engine
to decrease the belt tension (Figure 84).
5. Tighten the alternator adjustment bolt (Figure 84).
6. Check the tension of the belt; refer to Checking the
Tension of the Belt (page 58).
7. If the belt tension is correct, tighten the nut and bolt at
the pivot point for the alternator (Figure 84); otherwise
repeat steps 2 through 6.
8. Switch the battery disconnect switch to the On
position; refer to Battery-disconnect Switch (page 21).
9. Install the right side panel; refer to Installing the Side
Panels (page 36).
Replacing the Engine Drive
Belt
Removing the Belt
1. Remove the left and right side panels; refer to
Removing the Side Panels (page 35).
2. Loosen the nut and bolt at the pivot point for the
alternator (Figure 84).
3. Loosen the adjustment bolt on the alternator (Figure
84).
Figure 84
3. Alternator
4. Bolt (alternator pivot point)
4. Loosen the engine bolt and the alternator mounting
bracket.
5. Move the alternator toward the engine to loosen
the belt enough so that you can remove it from the
alternator pulley (Figure 84).
6. Remove the belt from the grooves of the alternator,
the fan, and the crankshaft pulleys.
7. Remove the 4 bolts that secure the fan guard to the fan
shroud (Figure 85).
Left side of the machine
1. Bolts
Right side of the machine
1. Bolts
2. Fan shroud
8. Rotate the fan guard counterclockwise around the drive
shaft of the fan until the opening in the guard is at the
4 o'clock position.
59
Figure 85
Figure 86
3. Fan guard mounting tab
(4)