Toro DH 220 Operator's Manual page 37

Problem
There is abnormal vibration.
The blades do not rotate.
The cutting height is uneven.
Possible Cause
1. The blades are bent or unbalanced.
2. The blade mounting screws are loose.
3. The engine mounting bolts are loose.
4. There is a loose engine pulley, idler
pulley, or blade pulley.
5. The engine pulley is damaged.
6. The blade drive belt is damaged.
1. The grass collector is not in place.
2. The blade drive belt is worn, loose, or
broken.
3. The blade drive belt is off the pulley.
1. The tire pressure is incorrect.
2. The mower is not level.
3. The underside of the mower is dirty.
4. The blade mounting screws are loose.
5. The blade drive belt tension is
incorrect.
37
Corrective Action
1. Install a new blades.
2. Tighten the blade mounting screws.
3. Tighten the engine mounting bolts.
4. Tighten the appropriate pulley.
5. Contact an Authorized Service Dealer.
6. Contact an Authorized Service Dealer.
1. Install the grass collector.
2. Contact an Authorized Service Dealer.
3. Contact an Authorized Service Dealer.
1. Set the tire pressure.
2. Adjust the height adjustment cable rod
assembly.
3. Clean the underside of the mower.
4. Tighten the blade mounting screws.
5. Contact an Authorized Service Dealer.