Toro ProLine 30437 Operator's Manual page 46

PROBLEM
Engine loses power. g
Engine overheats. g
Machine does not drive.
Abnormal vibration.
POSSIBLE CAUSES
1. Engine load is excessive.
2. Air cleaner is dirty.
3. Oil level in crankcase is low.
4. Cooling fins and air passages
under engine blower housing
are plugged.
5. Spark plug is pitted, fouled, or
gap is incorrect.
6. Vent hole in fuel cap is
plugged.
7. Dirt in fuel filter.
8. Dirt, water, or stale fuel is in
fuel system.
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. Shift lever is in NEUTRAL.
2. Traction belt is worn, loose or
broken.
3. Traction belt is off pulley.
4. Broken or missing idler
spring.
5. Traction control rod
contacting the end of the
neutral/parking brake slot
1. Cutting blade(s) is/are 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.
6. Blade spindle bent.
46
CORRECTIVE ACTION
1. Reduce ground speed.
2. Clean air cleaner element.
3. Add oil to crankcase.
4. Remove obstruction from
cooling fins and air passages.
5. Install new, correctly gapped
spark plug.
6. Clean or replace the fuel cap.
7. Replace fuel filter.
8. Contact Authorized Service
Dealer.
1. Reduce ground speed.
2. Add oil to crankcase.
3. Remove obstruction from
cooling fins and air passages.
1. Move shift lever to a drive
gear position.
2. Change Belt.
3. Change Belt.
4. Replace spring
5. Adjust the traction control rod
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.
6. Contact Authorized Service
Dealer.