Troubleshooting - Toro 78449 Operator's Manual

Troubleshooting

Problem
Abnormal vibration.
Blades do not rotate.
Uneven cutting height. g g
Insufficient transport height.
Possible Causes
1. A blade is bent or unbalanced.
2. A blade mounting bolt is loose.
3. The engine mounting bolts are
loose.
4. A loose engine pulley, idler
pulley, or blade pulley.
5. The engine pulley is damaged.
1. The blade drive belt is worn,
loose, or broken.
2. The blade drive belt is off the
pulley.
3. The PTO belt is worn, loose, or
broken.
1. The tire pressure is incorrect.
2. The mower is not level.
3. The underside of the mower is
dirty.
1. The lift arm cams are
improperly adjusted.
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Corrective Action
1. Install new blades.
2. Tighten the blade mounting
bolts.
3. Tighten the engine mounting
bolts.
4. Tighten the appropriate pulley.
5. Contact your Authorized
Service Dealer.
1. Install a new blade drive belt.
2. Install the blade drive belt and
check idler pulley and belt
guides for correct position.
3. Install a new PTO belt.
1. Set tire pressure.
2. Level the mower from
side-to-side and front-to-rear.
3. Clean the underside of the
mower.
1. Adjust lift arm cams.