Toro TURBO FORCE 39678, Operator'S Manual

Page: 38 / 52

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Figure 39
1. Hairpin cotter
3. Shield
2. Brake rod 4. Drive belt
Replacing the Drive Belt
1. Park the machine on a level surface, 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 40 ).
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Figure 40
1. Idler pulley in the slot 4. Belt guide
2. Traction belt 5. 19 mm (3/4 inch)
3. Mower belt 6. Traction belt
5. Loosen the pivot bolt enough to slide the idler
pulley in the slot, and remove the traction belt
from the engine and drive pulleys (
Figure 40 ).
6. Install the new drive belt around the engine and
drive pulleys (
Figure 40 ).
7. Slide the idler pulley in the engine frame to
tension the traction belt (
Figure 40 ).
8. Install the mower belt ( Figure 40 ).
9. Check the belt guide under the engine frame for
the proper adjustment (
Figure 40 ).
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.
Replacing the Mower Belt
Important:
The brake needs to be adjusted when
the belt tension or the brake linkage is adjusted.
1. Park the machine on a level surface, 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 belt cover from the
mower.
4. Remove the idler pulley and 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
39) .
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 42 ).
8. Engage the PTO.
9. Check the clearance between the bell crank and
transmission-output shaft (
Figure 41 ).
Note:
The clearance should be 2 to 3 mm (1/16
to 1/8 inch).
38