Troubleshooting
46
PROBLEM CORRECTIVE ACTIONPOSSIBLE CAUSES
Blade does not rotate
1. Blade drive belt is worn, loose
or broken.
1. Install new blade drive belt.
2. Blade drive belt is off pulley. 2. Install blade drive belt and
check idler pulley and belt
guides for correct position.
Engine loses power.
1. Engine load is excessive. 1. Reduce ground speed.
2. Air cleaner is dirty. 2. Clean air cleaner element.
3. Oil level in crankcase is low. 3. Add oil to crankcase.
4. Cooling fins and air passages
under engine blower housing
are plugged.
4. Remove obstruction from
cooling fins and air passages.
5. Spark plug is pitted, fouled, or
gap is incorrect.
5. Install new, correctly gapped
spark plug.
6. Vent hole in fuel cap is
plugged.
6. Clean or replace the fuel cap.
7. Carburetor is adjusted
incorrectly.
7. Adjust the carburetor.
8. Dirt, water, or stale fuel is in
fuel system.
8. Contact Authorized Service
Dealer.
Engine overheats.
1. Engine load is excessive. 1. Reduce ground speed.
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.
4. Carburetor is adjusted
incorrectly.
4. Adjust the carburetor.
Abnormal vibration.
1. Engine mounting bolts are
loose.
1. Tighten engine mounting
bolts.
2. Loose engine pulley, idler
pulley, or blade pulley.
2. Tighten the appropriate
pulley.
3. Engine pulley is damaged. 3. Contact Authorized Service
Dealer.
4. Cutter blade is unbalanced,
bent, or loose.
4. Install new cutter blade.
5. Blade bolt is loose. 5. Tighten bolt to 45–60 ft-lb
(61–81 N-m).
6. Drive belt is damaged. 6. Install blade drive belt and
check idler pulley and belt
guides for correct position.
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