Toro 04054 Operator's Manual page 29

5. While maintaining a slight gap between the cover seal
and the side plate, install each mounting bolt until the
threads engage in the insert. The gap allows visual
alignment of the bolts to the threaded inserts.
6. After all bolts are installed, tighten them until the
stand-offs inside the cover contact the side plate. Do
not overtighten.
Adjusting the Differential Belt
1. Remove the bolts securing the front and rear sections
of the differential cover to the differential housing and
slide the cover sections away to expose the belt.
2. Check the tension by pressing the belt at mid span
of the pulleys (Figure 42) with 5 to 6 lb (22–26 N) of
force. The belt should deflect 1/4 inch (6 mm).
1. Differential belt
3. Complete the following to adjust the belt tension:
A. Loosen the idler pulley mounting nut and pivot
the idler pulley clockwise against the backside of
the belt until the desired belt tension is attained
(Figure 42).
Important: Do not over tension the belt.
B. Tighten the nut to lock the adjustment.
4. Install the belt cover by placing it in position.
5. While maintaining a slight gap between the cover seal
and the side plate, install each mounting bolt until the
threads engage in the insert. The gap allows visual
alignment of the bolts to the threaded inserts.
6. After all bolts are installed, tighten them until the
stand-offs inside the cover contact the side plate. Do
not overtighten.
Adjusting the Primary V-Belts
1. To adjust the belt tension on primary V-belts, first
check the adjustment of the traction control. Refer to
Adjusting the Traction Control (page 31). If you are
unable to attain the 4 to 5 lb (18–22 N) force required in
adjusting the traction control, proceed to the next step.
Figure 42
2. Idler pulley
2. Loosen the retainer securing the V-belt cover and pivot
the cover open (Figure 43).
1
1. V-belt cover
3. To increase belt tension, loosen the engine mounting
bolts and move the engine backwards in the slots.
Important: Do not over tension the belt.
4. Tighten the mounting bolts.
Note: The distance between the centers of the driver
and the driven pulleys should be approximately 5.06
inches (12.85 cm) after new V-belts are installed.
5. After tensioning the primary V-belts, check the
alignment of the engine output shaft pulley and the
countershaft pulley with a straight edge.
6. If the pulleys are misaligned, loosen the screws securing
the engine mounting base to the mower frame and
slide the engine from side to side until the pulleys are
aligned within 0.030 inch (0.07 cm).
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1 2
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1. Locknut
2. Belt guide
7. Tighten the mounting screws and check the alignment.
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2
Figure 43
2. Retainer
4
Figure 44
3. Idler pulley
4. Idler arm
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