Toro 74170 - Page 68

Troubleshooting
66
PROBLEM CORRECTIVE ACTION POSSIBLE CAUSES
Engine overheats.
1. Engine load is excessive. 1. Reduce ground speed.
g
2. Oil level in crankcase is low . 2. Add oil to crankcase.
3. Cooling fins and air passages
under engine blower housing
are plugged.
3. Remove obstruction from
cooling fins and air passages.
Abnormal vibration.
1. Engine mounting bolts are
loose.
1. T ighten engine mounting
bolts.
2. Loose engine pulley , idler
pulley , or blade pulley .
2. T ighten the appropriate
pulley.
3. Engine pulley is damaged. 3. Contact Authorized Service
Dealer.
Machine does not drive.
1. T raction belt is worn, loose or
broken.
1. Contact Authorized Service
Dealer.
2. T raction belt is of f pulley . 2. Contact Authorized Service
Dealer.
3. Hydro fluid level low . 3. Add hydro fluid to reservoir .
Abnormal vibration.
1. Engine mounting bolts are
loose.
2.
Loose engine pulley , idler
pulley , or blade pulley .
3.
Engine pulley is damaged.
4. Cutting blade(s) is/are bent or
unbalanced.
1. T ighten engine mounting
bolts.
2. T
ighten the appropriate
pulley.
3.
Contact Authorized Service
Dealer.
4.
Install new cutting blade(s).
5. Blade mounting bolt is loose. 5. T ighten blade mounting bolt.
6. Engine mounting bolts are
loose.
6. T ighten engine mounting
bolts.
7. Loose engine pulley , idler
pulley , or blade pulley .
7. T ighten the appropriate
pulley.
8. Engine pulley is damaged. 8. Contact Authorized Service
Dealer.
9. Blade spindle bent. 9. Contact Authorized Service
Dealer.