TRBL
SHTG
Troubleshooting
9-9
6D81G11
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
Is the vent
screw open?
Water or
residue?
Kinks or fuel
leakage?
Check for water or residue in
the fuel filter.
Open the fuel vent screw.
Clean the fuel system from the
fuel tank to the fuel filter.
Check the fuel hose for kinks or
fuel leakage.
No
Yes
Yes
No
Check that the fuel vent screw of the fuel tank is open.
Yes
Replace the
defective parts.
Check the fuel pressure.
No
Within
specification?
YesNo
Check the fuel
injector resistance.
Within
specification?
Yes
No
Replace the fuel
injector.
Check the fuel system using the
Yamaha Diagnostic System.
Check the pressure regulator.
Good operat-
ing condition?
Replace the pressure regulator.
No
Yes
Check the fuel system using the
Yamaha Diagnostic System.
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