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2 CYCLE ENGINE TROUBLESHOOTING CHART (Cont.)
Cause Remedy
ENGINE OVERHEATS (continued)
Excessive load on engine Check operation of associated equipment. Reduce
excessive load.
Carbon in combustion chamber Remove cylinder head or cylinder and clean carbon
from head and piston.
Improper amount of oil in fuel mixture Drain tank; fill with correct mixture.
ENGINE SURGES OR RUNS UNEVENLY
Fuel tank cap vent hole clogged Open vent hole.
Crankcase air leak Inspect and replace gasket or seal.
Governor parts sticking or binding Clean, and if necessary repair governor parts.
Carburetor throttle linkage or throttle shaft and/or Clean, lubricate, or adjust linkage and deburr throttle
butterfly binding or sticking shaft or butterfly.
ENGINE VIBRATES EXCESSIVELY
Engine not securely mounted Tighten loose mounting bolts (See equipment
instructions).
Bent crankshaft Replace crankshaft.
Driven equipment out of balance Recheck driven equipment.
Piston installed incorrectly. Engines with wrist Install piston correctly.
pin offset.
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