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TRBL
SHTG
Troubleshooting
Symptom: Engine can be started, but does not remain on.
• Check the fuel system.
• Check the ignition system.
• Check the compression pressure of the power unit.
Fuel system
Check that the fuel vent screw of the fuel tank is open.
Is the vent
screw open?
No
Open the fuel vent screw.
Yes
Check for water or residue in
the fuel filter.
Water or
residue?
No
Check the fuel hose for kinks or
fuel leakage.
Yes
Clean the fuel system from the
fuel tank to the fuel filter.
Kinks or fuel
leakage?
Yes
Replace the
defective parts.
Yes
Check the fuel
injector resistance.
Yes
Within
specification?
No
Check the fuel pressure.
No
Check the pressure regulator.
Within
specification?
Check the fuel system using the
Yamaha Diagnostic System.
No
Good operating condition?
No
Replace the pressure regulator.
Replace the fuel
injector.
Yes
Check the fuel system using the
Yamaha Diagnostic System.
9-9
6D81G11