Adjusting The Mower Belt Tension - Toro 30632 Operator's Manual

Figure 40
32-inch and 36-inch mower deck
1. 13 mm (1/2 inch) deflection
here
2. Assist arm
3. Front stop
Figure 41
48-inch mower deck
1. 13 mm (1/2 inch) deflection
here
2. Assist arm
3. Front stop
13. Check the belt guide under the engine frame for
the proper adjustment
Note:
The distance between the belt guide and
mower belt should be 32 mm (1-1/4 inches)
when you engage the mower belt. Adjust the
g001478
4. Locknut
5. Turnbuckle
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4. Locknut
5. Turnbuckle
(Figure 38).
mower belt as necessary. The disengaged belt
should not drag or fall off the pulley when the
guides are properly adjusted.
Adjusting the Mower Belt
Tension
Adjusting the Tension for 32-inch
and 36-inch Mower Decks
Service Interval: After the first 8 hours—Check the
mower belt tension.
After the first 25 hours—Check the mower belt
tension.
Every 50 hours—Check the mower belt tension.
Important:
Adjust the brake whenever you adjust
the belt tension or brake linkage.
Important:
The belt must be tight enough to
not slip during heavy loads, while cutting grass.
Over-tensioning the belt reduces the life of the
spindle bearing, belt, and idler pulley.
The belt must be tight enough so that it does not
slip during heavy loads while cutting grass, and
over-tensioning will reduce belt and spindle bearing
life.
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. Loosen the locknut on the turnbuckle
42).
4. Adjust the tension of the belt.
•
Rotate the turnbuckle toward the rear of the
machine to increase the tension on the belt.
•
Rotate the turnbuckle toward the front of the
machine to decrease the tension on the belt
(Figure 42).
Note:
The eyebolt threads on both ends of the
turnbuckle should be engaged a minimum of 8
mm (5/16 inch).
5. Engage the PTO and check the belt tension.
Adjust the tension until it is correct.
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).
37
(Figure