Yamaha RS90NL, Owner'S Manual

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5-2
ESU00201
Starter lever (choke)
Use the starter lever (choke) when starting and warming
up a cold engine.
1 Starter lever (choke)
2
When starting a cold engine.
3
Warming up
4
When the engine is warm.
NOTE:
@
Refer the “Starting the engine” section for proper opera-
tion.
@
ESU00022
Throttle lever
Once the engine is running cleanly, squeezing
a
the throt-
tle lever 1 will increase the engine speed and cause
engagement of the drive system. Regulate the speed of
the snowmobile by varying the throttle position. Because
the throttle is spring-loaded, the snowmobile will deceler-
ate, and the engine will return to idle when it is released
b
.
WARNING
@
Check the throttle, brake, and steering for proper
operation before starting the engine.
@
ESU00361
Engine overheating prevention system
This model is equipped with an engine overheating pre-
vention system to prevent overheating when the engine
is idling.
When the engine has been idling for at least 3 minutes
and the coolant temperature has risen above 100 °C
(212 °F), the engine automatically shuts off to prevent
overheating.
NOTE:
The engine can be started after it shuts off.
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