Troubleshooting - Yamaha RX10GTX Owner's Manual

ESU12381
Engine turns over but does not start
1. Fuel system
No fuel supplied to combustion chamber
• No fuel in tank: Supply fuel.
• Clogged fuel line: Clean fuel line.
• Clogged injector: Ask a Yamaha dealer to
inspect.
Fuel supplied to combustion chamber
• Flooded engine: Crank engine or wipe
the spark plugs dry.
2. Electrical system
Poor spark or no spark
• Spark plugs are dirty with carbon or are
wet: Remove carbon or wipe the spark
plugs dry. Replace if necessary.
• Faulty ignition system: Ask a Yamaha
dealer to inspect.
• T.O.R.S. malfunction: Disconnect the
throttle switch connectors and connect
the wire harness connectors together to
bypass the T.O.R.S.
EWS00560
WARNING
Before bypassing the T.O.R.S., make
G
sure that the throttle returns properly to
the fully closed position.
The T.O.R.S. is an important safety de-
G
vice; in the case of a malfunction, take
the snowmobile to a Yamaha dealer im-
mediately for repair.

Troubleshooting

3. Compression
Insufficient
• Loose cylinder head nuts: Tighten nuts
properly.
• Worn or damaged gasket: Replace gas-
ket.
• Worn or damaged piston and cylinder:
Ask a Yamaha dealer to inspect.
Discharged battery
If the battery is discharged, the engine can be
started using a fully-charged 12-volt battery
and jumper cables. Two connecting leads
have been provided for jump-starting the
snowmobile. Due to the rubber engine mount-
ing, the snowmobile frame is not a suitable
grounding point for jump-starting the engine.
EWS00570
WARNING
Connect the jumper cables only to the
G
connecting lead terminals. Do not con-
nect them to the frame or any wire or
other lead.
When connecting the jumper cables, do
G
not contact the jumper cables or con-
necting lead terminals to each other or
to the frame or any metal part of the
snowmobile. This can cause electrical
system damage or A FIRE HAZARD.
Be sure to pull the lead covers back over
G
the terminals completely. If the termi-
nals are exposed, they could come into
contact with the frame or a metal part of
the snowmobile and this can cause elec-
trical system damage or A FIRE HAZ-
ARD.
ECS00650
CAUTION:
Use the connecting leads to jump-start the
snowmobile only. Do not use the connect-
ing leads for any other purpose.
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