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Governor fails to work. Engine
Clean thoroughly and oil well.
Ignition bad. Engine runs slug-
Springs too strong or too weak
Short circuits; weak batteries.
Wires broken or
Overhaul wires and test bat-
Retard spark. Clean plug and
Pre-ignition. Spark too far ad-
Faulty ignition. Poor mixture.
Loss of power, or poor speed.
Overhaul ignition. Give more
Poor cil or oil of an improper Try a different grade of oil and
Igniter binds in bushing slipping. Try without muffler or
Misfires. Engine runs slug-
Muffler troubles. Loud explo-
Unexploded gas entering muffler
Noises and rattle around engine.
Loose nuts or bolts. Loose' con-
Slow motor down before stop-
Tighten up all connections,
Renew or clean all pipes, radi-
Examine pump and
Pour kerosene through head of
If cylinder is scored
Piston troubles. Piston pounds,