Replacing The Pump Drive; Belt - Toro 74237 Operator's Manual

Figure 49
1. Rachet with short extension
or breaker bar
9. Check the distance from the rubber stop and
the arm of the spring loaded idler pulley when
the idler plate is tightened. It needs to be 0 to
1/4 inch (0 to 6 mm) from the rubber stop
(Figure 50).
Figure 50
1. Spring loaded idler pulley
2. Top alignment hole
3. 0 to 1/4 inch gap (0 to 6
mm)
10. Adjust the belt tension and the idler plate, if
necessary, and tighten all hardware securely
(Figure 49).
11. If the idler plate contacts the end of the
adjustment slot and more belt tension is
required, a small change to the right side fixed
2. Idler plate with Square hole
4. Idler pulley arm

5. Belt

6. Rubber bumper
idler can create more belt tension adjustment
(Figure 51).
Figure 51
1. Fixed idler

Replacing the Pump Drive

Belt
Check pump drive belt for wear after every
50 hours of operation.
1. Pull the spring loaded idler down and remove
traction belt from the engine and hydro pump
pulleys (Figure 52). Remove belt between
pulleys.
Figure 52
2. Install new belt around engine and hydro pump
pulleys (Figure 52).
3. Pull spring loaded idler down and align below
traction belt. Release the pressure on the
spring loaded idler (Figure 52).
40
2. Adjustment slot