Toro 74191 Operator's Manual page 63

PROBLEM
Engine overheats. g
Abnormal vibration.
Machine does not drive.
POSSIBLE CAUSES
1. Engine load is excessive.
2. Oil level in crankcase is low.
3. Cooling fins and air passages
under engine blower housing
are plugged.
1. Engine mounting bolts are
loose.
2. Loose engine pulley, idler
pulley, or blade pulley.
3. Engine pulley is damaged.
1. Parking brake is on.
2. Traction belt is worn, loose or
broken.
3. Traction belt is off pulley.
4. Hydro fluid level low.
Troubleshooting
CORRECTIVE ACTION
1. Reduce ground speed.
2. Add oil to crankcase.
3. Remove obstruction from
cooling fins and air passages.
1. Tighten engine mounting
bolts.
2. Tighten the appropriate
pulley.
3. Contact Authorized Service
Dealer.
1. Move parking brake to off.
2. Contact Authorized Service
Dealer.
3. Contact Authorized Service
Dealer.
4. Add hydro fluid to reservoir.
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