Troubleshooting - Suzuki FA50 Service Manual

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H A R D E N G I N E STARTING OR NO ENG I N E STARTING
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E N G I N E
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1 . Compression leakage from crank chamber
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Leakage from cylinder base gasket
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Damaged or i mproperly tightened reed valve
Leakage due to defective crankshaft o i l seal
Leakage from crankcase mating surface
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2. Compression leakage from combustion chamber
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Loose spark plug mounting
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Damaged cylinder head gasket
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Loose cylinder head tightening nut
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Worn or sticking piston ring
Piston seizure, wear or holed piston
Defective or warped cylinder head mating surface
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FUEL CI RCUIT
1 .
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Fuel line
Clogged fuel hose
Damaged fuel cock diaphram
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2.
Air passage
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Air intake due to defective fuel cock vacuum hose
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Air intake due to damaged reed valve gasket
Air intake due to loose carburetor inlet mounting
Clogged tank cap breather hole
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3.
Carburetor
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Poor return of choke plunger
Clogged air jet or pilot jet
Clogged needle valve
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ELECTRICAL CI RCUIT
1 .
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No sparking at spark plug
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Bridged, carbon fouled or wet spark plug
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Poor contact between spark plug cap and high tension cord
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Broken or i mproperly connected engine ground wire
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Defective engine k i l l switch
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Poor contact of ignition switch
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Broken or short circuited igni tion coil
Defective wiring among stator, P E I unit and ignitin coil
Defective P E I unit
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2 . Sparking at spark plug
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I mproperly timed ignition
Loose mounting part of stator or rotor
Check engine unit or fuel circuit
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TROUBLESHOOTING

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