SOLUCI
NDE
PROBLEMAS
8.1
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TROUBLESHOOTING
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GENERAL INFORMATION
NOTE:
The following troubleshooting guide does not cover
all possible causes. It should be useful,
however, as a basic guide to the
troubleshooting. See the procedure in this manual
for checks, adjustments and parts replacement.
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STARTING FAILURES
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Engin
e
1. Cylinder and
cylinder head
• Spark plug loose
• Loose cylinder head or cylinder
• Damage to the head gasket
• Damaged cylinder gasket
• Cylinder worn or damaged
• Improper valve clearance adjustment
• Valve not closed
• Improper break valve
• Sync incorrect valve
• defective valve spring
• seized valve
2. Piston and piston rings
• Improperly installed piston rings
• Damage, wear or fatigue piston rings
• Rings stiff
• Piston damaged or seized
3. Air filter
• Air filter installed improperly
• Air filter element clogged
4. Crankcase and
crankshaft
• Crankcase incorrect assembly
• Crankshaft seized
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Fuel System
1. Fuel tank
• Fuel tank empty
• Clogged fuel filter
• Fuel deteriorated or contaminated
2.
Carburetor
• Fuel deteriorated or contaminated
• Fuel dispenser clogged
• Carburetor out of adjustment
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Electrical System
1.
Battery
• Battery discharged
• Battery failure
2.
Fuse
• Blown, damaged or incorrect
• improperly installed fuse
3.
Plug
• Improper plug cap
• heat range spark plug incorrect
• Faulty spark plug
• Worn or damaged electrode
• worn or damaged insulation
• Spark plug defective
4. Ignition Coil
• Body of the ignition coil cracked or fractured
• primary and secondary coils fractured or
• short circuit
Defective spark plug
5.S Power ystem
• Faulty CDI
• crankshaft position sensor defective
• Magneto or broken rotor keyway
6. The switches and wiring
• The switches and wiring
• Defective main switch
• Engine stop switch defective
• Broken or shorted wiring
Faulty neutral switch
Starter switch defective
• Faulty clutch switch
• Grounding circuit
• Loose
7. Starting System
• Starter defective
• Starter relay faulty
• Relay faulty ignition cutoff
• Faulty starter clutch
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Improper engine idling
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1. Cylinder and cylinder head
• Improper valve clearance adjustment
• valvetrain components damaged
2. Air filter
• Air filter element clogged
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Fuel System
1.Carburador
• Union carburetor loose or damaged
• Set the throttle cable free inadequate
• Carburetor flooded
• Air Induction System defective
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