Toro ProLine 20 HP 30611, Operator'S Manual

Page: 33 / 48

Maintenance
31
Replace Belts
To replace traction or jackshaft belt, use the following
procedures and belt routing diagram (Fig. 29).
1. Disengage the power take off (PTO), set the
parking brake, and turn the ignition key to
“OFF” to stop the engine. Remove the key.
2. Raise seat and remove belt guard. See Removing
Belt Guard on page 21.
3. Clutch anchor bolt must be removed, and clutch
unplugged from wire harness before traction
belts can be removed.
4. Release tension in idler pulleys before removing
or installing belts (Fig. 28).
5. Install belts, route traction belt over transmission
as shown (Fig. 29).
6. Install clutch anchor bolt and plug in connector.
IMPORTANT: To avoid damage reinstall
clutch anchor bolt before connecting wire.
7. Adjust belt tension; refer to Adjust Belts page
30.
8. Reinstall belt gurard. See Installing Belt Guard
on page 21.
Figure 29
1. Jackshaft belt
2. Traction belt
3. Jackshaft pulley
4. transmission pulley
5. Idler pulley
6. Clutch pulley
7. Engine pulley
Adjust Lift Cylinder and
Counterbalance Springs
1. Raise seat and remove belt guard. See Removing
Belt Guard on page 21.
2. Start engine and lower lift arms (cutting unit)
until lift cylinder is fully extended and lift
(cutting unit) is fully lowered.
3. Measure distance between cylinder jam nuts and
cylinder pivot pin (Fig. 30). Distance should be
approximately 2-1/4 inch.
4. Loosen jam nuts and adjust, if necessary, to
attain needed clearance.
Figure 30
1. Jam nut
2. Cylinder pivot pin
3. Counterbalance spring
4. Adjustment nut
5. Lift arm “T” hook