Toro 30551 Operator's Manual page 25

2. Release and unhook the latches securing the covers to
the top of the cutting unit. Remove the covers.
3. Loosen the 2 nuts securing the idler plate in place and
remove the old belt from the pulleys.
4. To install a new belt, the gear box base must be
removed. To do this, remove the 4 carriage bolts and
locknuts holding the gear box base.
5. Install the new belt around the gear box pulley, spindle
pulleys, stationary idler pulley, and adjustable idler
pulley (Fig. 36).
1
Figure 36
1. Adjustable idler pulley
6. Install the gear box base with the carriage bolts and
locknuts.
7. Using a torque wrench, adjust the tension of the idler
pulley against the belt; refer to Adjusting the Idler
Pulley, page 24.
8. Install the covers and secure the latches.
2
2. Gear box pulley
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