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

Figure 39
32in and 36in Mower Deck
1. 1/2 inch (13 mm) deflection
here
2. Assist arm
3. Front stop
Figure 40
48in Mower Deck
13. Check the belt guide under the engine frame for the
proper adjustment (Figure 37).
Note: The distance between the belt guide and the
mower belt should be 1-1/4 inch (32 mm) when
you engage the mower belt. Adjust the mower belt
as necessary. The disengaged belt should not drag
or fall off the pulley when the guides are properly
adjusted.
4. Locknut
5. Turnbuckle
Adjusting the Mower Belt
Tension
Adjusting the Tension for 32in and 36in
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: The brake needs to be adjusted when
the belt tension or the brake linkage is adjusted.
Important: The belt must be tight enough to not
slip during heavy loads while cutting grass. Over
tensioning the belt will reduce the spindle bearing
life, the belt life and the idler pulley life.
The belt must be tight enough so it does not slip during
heavy loads while cutting grass and over-tensioning will
reduce belt and spindle bearing life.
1. Disengage the blade control (PTO) lever and set the
parking brakes.
2. Stop the engine and wait for all moving parts to stop
before leaving the operating position.
3. Loosen the locknut on the turnbuckle (Figure 41).
4. Rotate the turnbuckle toward the rear of the
mower to increase the tension on the belt. Rotate
the turnbuckle toward the front of the mower to
decrease the tension on the belt (Figure 41).
Note: The eyebolt threads on both ends of the
turnbuckle should be engaged a minimum of
5/16 inch (8 mm).
5. Engage the bladed control lever (PTO) and check
the belt tension. Adjust tension until it is correct.
Note: The proper mower belt tension is 10-15 ft-lb.
(44-67 N) with the belt deflected 1/2 inch (13 mm)
halfway between the pulleys (Figure 41).
33