Troubleshooting Guide - Scag Power Equipment SE-3.5BS Operator's Manual

Problem
Engine fails to start
Hard starting or loss of power
Operation erratic
Engine skips at high speed
Engine idles poorly

TROUBLESHOOTING GUIDE

Cause
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.
Carburetor improperly adjusted.
Spark plug wire loose.
Dirty air cleaner.
Dirt in gasoline tank.
Dirty air cleaner.
Water in fuel supply.
Vent in gas cap and/or carburetor plugged.
Carburetor improperly adjusted.
Spark plug fouled, faulty, or gap too wide.
Carburetor improperly adjusted.
Dirty air cleaner.
Carburetor idle speed too slow.
Carburetor improperly adjusted.
Spark plug gap too close.
Carburetor idle mixture improperly set.
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