2003 Yamaha Motorsports SXViper Mountain Owners Manual - Page 21
2003 Yamaha Motorsports SXViper Mountain Manual
Page 21 highlights
ESU00020 Starter lever (choke) Use the starter lever (choke) when starting and warming up a cold engine. 1 2 3 4 @ Starter lever (choke) When starting a cold engine. Warming up When the engine is warm. NOTE: Refer the "Starting the engine" section for proper operation. @ ESU00022 Throttle lever Once the engine is running cleanly, squeezing a the throttle 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 decelerate, 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. @ ESU00023 Throttle override system (T.O.R.S.) If the carburetor or throttle cable should malfunction during operation, the T.O.R.S. will operate when the throttle lever is released. The T.O.R.S. is designed to interrupt the ignition and keep the engine revolution speed between 2,800 and 3,000 r/min if the carburetor fails to return to idle when the lever is released. 5-2