Problem Cause Remedy
Engine fails to start Choke not activated1.
Fuel tank empty, or stale fuel. 2.
Blocked fuel line. 3.
Faulty spark plug. 4.
Engine flooded. 5.
Throttle Control not in correct position6.
Spark plug wire disconnected.7.
Place choke control in CHOKE position. 1.
Fill tank with clean, fresh (less than 30 days 2.
old) gas.
Clean fuel line. 3.
Clean, adjust gap or replace plug. 4.
Wait a few minutes before restarting.5.
Place throttle control in FAST position.6.
Connect wire to spark plug7.
Engine runs erratic Engine running with CHOKE activated. 1.
Spark plug wire loose. 2.
Blocked fuel line or stale fuel. 3.
Vent in gas cap plugged. 4.
Water or dirt in fuel system. 5.
Dirty air cleaner. 6.
Move throttle/choke control out of CHOKE 1.
position.
Connect spark plug wire. 2.
Clean fuel line; fill tank with clean, fresh 3.
gasoline and replace fuel filter.
Clear vent or replace cap if damaged. 4.
Drain fuel tank. Refill with clean, fresh 5.
gasoline.
Replace air cleaner paper element. 6.
Engine overheats Engine oil level low. 1.
Air flow restricted. 2.
Fill crankcase with proper amount and 1.
weight of oil.
Clean debris from around the engine’s 2.
cooling fins and blower housing.
Engine hesitates at high
RPM
Spark plug gap too close. 1. Remove spark plug and reset the gap. 1.
Engine Idles rough Spark plug fouled, faulty or gap too wide. 1.
Dirty air cleaner. 2.
Replace spark plug. Set plug gap. 1.
Replace air cleaner element. 2.
Troubleshooting
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