Troubleshooting - Toro 78370 Operator's Manual

Troubleshooting

PROBLEM
Abnormal vibration.
Blade(s) does not rotate.
Uneven cutting height.
Insufficient transport height.
PTO belt comes off of pulleys.
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POSSIBLE CAUSES
1. Cutting blade(s) is bent or
unbalanced.
2. Blade mounting bolt is loose.
3. Engine mounting bolts are
loose.
4. Loose engine pulley, idler
pulley, or blade pulley.
5. Engine pulley is damaged.
1. Blade drive belt is worn, loose
or broken.
2. Blade drive belt is off pulley.
3. PTO belt is worn, loose or
broken.
1. Tire pressure is incorrect.
2. Mower is not level.
3. Underside of mower is dirty.
1. Lift arm cams are improperly
adjusted.
1. Belt tension is incorrect.
2. Blade slope is incorrect.
3. Blade slope in transport is
incorrect.
4. Belt is worn or damaged.
5. Pulley is damaged.
CORRECTIVE ACTION
1. Install new cutting blade(s).
2. Tighten blade mounting bolt.
3. Tighten engine mounting
bolts.
4. Tighten the appropriate
pulley.
5. Contact Authorized Service
Dealer.
1. Install new blade drive belt.
2. Install blade drive belt and
check idler pulley and belt
guides for correct position.
3. Install new PTO belt.
1. Set tire pressure.
2. Level mower from
side-to-side and front-to-rear.
3. Clean the underside of the
mower.
1. Adjust lift arm cams.
1. Adjust belt tension.
2. Adjust blade slope.
3. Adjust blade slope in
transport.
4. Install new belt.
5. Contact Authorized Service
Dealer.