Scag Power Equipment SE-3.5BS - Manual (Page 12)

9
TROUBLESHOOTING GUIDE
Problem Cause
Engine fails to start Fuel level is low.
Spark plug lead wire disconnected.
Throttle or choke not in starting position.
Spark plug defective.
Carburetor improperly adjusted.
Old/stale gasoline.
Engine kill switch in off position.
Hard starting or loss of power Carburetor improperly adjusted.
Spark plug wire loose.
Dirty air cleaner.
Operation erratic Dirt in gasoline tank.
Dirty air cleaner.
Water in fuel supply.
Vent in gas cap and/or carburetor plugged.
Carburetor improperly adjusted.
Engine skips at high speed Spark plug fouled, faulty, or gap too wide.
Carburetor improperly adjusted.
Dirty air cleaner.
Engine idles poorly Carburetor idle speed too slow.
Carburetor improperly adjusted.
Spark plug gap too close.
Carburetor idle mixture improperly set.