Yamaha RST90PGTB Offroad Vehicle User Manual


 
Troubleshooting
116
ESU14163
Engine turns over but does not start
1. Fuel system
No fuel supplied to combustion cham-
ber
No fuel in tank:
Supply fuel.
Clogged fuel line:
Clean fuel line.
Clogged injector (RS90P /
RS90PLT / RST90PGT):
Ask a Yamaha dealer to check.
Clogged carburetor (RST90):
Clean carburetor.
Fuel supplied to combustion chamber
Flooded engine (RS90P /
RS90PLT / RST90PGT):
Crank engine or wipe spark plugs
dry.
Flooded engine (too much choke)
(RST90):
Crank engine with throttle open or
wipe spark plugs dry.
2. Electrical system
Poor spark or no spark
Spark plugs are dirty with carbon or
are wet:
Remove carbon or wipe spark plugs
dry. Replace if necessary.
Faulty ignition system:
Ask a Yamaha dealer to check.
T.O.R.S. malfunction:
Disconnect throttle switch connec-
tors and connect wire harness con-
nectors together to bypass T.O.R.S.
WARNING! Before bypassing the
T.O.R.S., make sure that the throt-
tle returns properly to the fully
closed position. The T.O.R.S. is an
important safety device; in the
case of a malfunction, take the
snowmobile to a Yamaha dealer
immediately for repair.
[EWS00561]
RS90P / RS90PLT / RST90PGT
RST90
U8HV10E0.book Page 116 Monday, May 16, 2011 1:15 PM