2010 Yamaha Motorsports FX Nytro RTX Owners Manual - Page 50
2010 Yamaha Motorsports FX Nytro RTX Manual
Page 50 highlights
Periodic maintenance and adjustment is too long, overheating and engine damage may result. If the reach is too short, spark plug fouling and poor performance may result. Also, if the reach is too short, carbon will form on the exposed threads resulting in combustion chamber hot spots and thread damage. Always use a spark plug with the specified reach. Spark plug reach: 19.0 mm (0.75 in) ECS00382 NOTICE Make sure that the spark plug caps are securely installed. Otherwise the spark plug caps could be damaged due to engine vibration. ESU12792 Adjusting the throttle cable free play 1. 2. Loosen the locknut. To increase the throttle cable free play, turn the adjusting bolt in direction (a). To decrease the throttle cable free play, turn the adjusting bolt in direction (b). 2 1 (b) (a) 1. Spark plug gap 2. Spark plug reach Before installing any spark plug, measure the electrode gap with a wire thickness gauge and adjust to specification. Spark plug gap: 0.7-0.8 mm (0.028-0.031 in) When installing the spark plug, always clean the gasket surface. Wipe off any grime from the threads and tighten the spark plug to the specified torque. Spark plug tightening torque: 12.5 Nm (1.25 m·kgf, 9 ft·lbf) 1. Locknut 2. Throttle cable free play adjusting bolt 3. Throttle cable free play Throttle cable free play: 3.0-4.0 mm (0.12-0.16 in) 3. Tighten the locknut. ESU11863 Checking the throttle override system (T.O.R.S.) EWS00352 WARNING When checking the T.O.R.S., take precautions to avoid snowmobile movement which could cause an accident: G Make sure that the throttle lever moves smoothly with the engine off before checking the T.O.R.S. 44