Replacing The Drive Belt; Replacing The Mower Belt - Toro 30672 Operator's Manual

Replacing the Drive Belt

1. Disengage the PTO and engage the parking
brake.
2. Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3. Raise the rear of the machine and hold it up with
jack stands.
4. Remove the mower belt
Figure 41
1. Idler pulley in slot
2. Traction belt
3. Mower belt
5. Loosen the pivot bolt enough to slide the idler
pulley in the slot, and remove the traction belt
from the engine and the drive pulleys
41).
6. Install the new drive belt around the engine and
the drive pulleys
7. Slide the idler pulley in the engine frame to
tension the traction belt
8. Install the mower belt
9. Check the belt guide under the engine frame for
the proper adjustment
Note:
The distance between the belt guide and
mower belt should be 19 mm (3/4 inch) when
you engage the mower belt. Adjust the belt if
necessary. The disengaged belt should not drag
or fall off the pulley when the guides are properly
adjusted.
(Figure 41).
4. Belt guide
5. 19 mm (3/4 inch)
6. Mower belt
(Figure
(Figure 41).
(Figure 41).
(Figure 41).
(Figure 41).

Replacing the Mower Belt

Important:
The brake needs to be adjusted when
the belt tension or the brake linkage is adjusted.
1. Disengage the PTO and engage the parking
brake.
2. Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3. Remove the knobs and the belt cover on the
mower.
4. Remove the idler pulley and the worn belt.
5. Install the new mower belt.
6. Install the idler pulley.
7. Engage the PTO and check the belt tension.
Refer to Adjusting the Mower Belt Tension (page
38).
Note:
The proper mower belt tension is 44 to
67 N∙m (10 to 15 ft-lb) with the belt deflected
13 mm (1/2 inch) halfway between the pulleys
(Figure 44).
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8. Engage the PTO.
9. Check the clearance between the bell crank and
the transmission output shaft
1. 2 to 3 mm (1/16 to 1/8
inch)
2. Bell crank
3. Transmission output shaft
Note:
The clearance should be 2 to 3 mm (1/16
to 1/8 inch).
10. Remove the hairpin cotter and the clevis pin
from the bell crank.
11. Rotate the clevis clockwise on the rod to increase
the clearance; rotate it counterclockwise to
decrease it
12. Disengage the PTO.
37
(Figure
Figure 42
4. Hairpin cotter
5. Clevis pin
6. Clevis
(Figure 42).
42).
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