5-2ESU00201Starter 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.@ESU00231Throttle override system (T.O.R.S.)If the carburetor or throttle cable should malfunction dur-ing operation, the T.O.R.S. will operate when the throttlelever is released.The T.O.R.S. is designed to interrupt the ignition andkeep the engine speed between 2,800 and 3,000 r/min ifthe carburetor fails to return to idle when the lever isreleased.