8
SYMPTOM
POSSIBLE CAUSES
Will Not Start/Hard to Start
Empty fuel tank.
Faulty carburetor, ignition coil, or valves.
Faulty battery or ignition key switch.
Faulty head gasket, piston, cylinder, valves, or piston ring.
Loose cylinder head bolts.
Clogged air filter elements.
Faulty fuel pressure regulator.
Defective, poorly gapped, or loose spark plug.
Engine Lacks Power
Faulty carburetor, ignition coil.
Faulty head gasket, piston, cylinder, valves, or piston ring.
Loose cylinder head bolts.
Clogged air filter elements.
Faulty fuel pressure regulator.
Defective, poorly gapped, or loose spark plug.
Clogged cooling air (bonnet) element. (Overheat)
Dirty cooling fins. (Overheat)
Low engine oil level. (Overheat)
Excessive carbon deposits in combustion chambers.
(Overheat)
Engine Speed Won’t Increase
Faulty cable connection, or engine governor.
Engine Stops Running.
Out of fuel.
Severe condition causing engine to overheat.
Smell of Burned Rubber
Drive belt out of adjustment.
Machine Vibrates
Loose bolts.
Pad not centered.
Machine “Digs In” While Running
Operator is bearing down too hard.
