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Troubleshooting
5
9
Problem Cause Remedy
Engine fails to start 1. Throttle lever (if equipped) not in correct starting
position.
2. Engine switch (if equipped) in OFF position.
3. Spark plug wire disconnected.
4. Choke not in CHOKE position (if equipped).
5. Fuel tank empty or stale fuel.
6. Fuel shut-off valve closed (if equipped).
7. Faulty spark plug.
1. Move throttle lever to FAST or START position.
2. Move engine switch to ON position.
3. Connect wire to spark plug.
4. Move choke lever to CHOKE position.
5. Fill tank with clean, fresh gasoline.
6. Turn on fuel shut-off valve.
7. Clean, adjust gap, or replace.
Engine runs erratic 1. Spark plug boot loose.
2. Unit running on CHOKE (if equipped).
3. Blocked fuel line or stale fuel.
4. Low engine RPM.
5. Water or dirt in fuel system.
6. Dirty air cleaner.
7. Carburetor out of adjustment.
1. Connect and tighten spark plug boot.
2. Move choke lever to OFF position.
3. Clean fuel line; fill tank with clean, fresh
gasoline.
4. Always run engine at full throttle.
5. Drain fuel tank. Refill with fresh fuel.
6. Refer to engine manual.
7. See authorized service dealer.
Engine overheats 1. Engine oil level low.
2. Dirty air cleaner.
1. Fill crankcase with proper oil.
2. Refer to engine manual.
Occasional skips
(hesitates) at
high speed
1. Spark plug gap too close.
2. Carburetor idle mixture adjustment improperly set.
1. Remove spark plug and adjust gap. See Engine
Manual for gap specifications.
2. See authorized service dealer.
Excessive Vibration 1. Loose parts or damaged impeller. 1. See authorized service dealer.
Unit does not discharge 1. Discharge area clogged.
2. Foreign object lodged in impeller.
3. Low engine RPM.
1. Stop engine immediately and disconnect
spark plug wire. Clean flail screen and inside of
discharge opening.
2. Stop engine and disconnect spark plug wire.
Remove lodged object.
3. Always run engine at full throttle.
Rate of discharge slows
considerably or composition of
discharged material changes
1. Low engine RPM.
2. Chipper blade dull.
1. Always run engine at full throttle.
2. Replace chipper blade or see your authorized
service dealer.
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