5-2ESU00020Starter lever (choke)Use the starter lever (choke) when starting and warmingup a cold engine.1 Starter lever (choke)2 When starting a cold engine.3 Warming up4 When the engine is warm.NOTE:@Refer the “Starting the engine” section for proper opera-tion.@ESU00022Throttle leverOnce the engine is running cleanly, squeezing a the throt-tle lever 1 will increase the engine speed and causeengagement of the drive system. Regulate the speed ofthe snowmobile by varying the throttle position. Becausethe 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 properoperation before starting the engine.@ESU00361Engine overheating prevention systemThis model is equipped with an engine overheating pre-vention system to prevent overheating when the engineis idling.When the engine has been idling for at least 3 minutesand the coolant temperature has risen above 100 °C(212 °F), the engine automatically shuts off to preventoverheating.NOTE:The engine can be started after it shuts off.