2003-2006 Yamaha Snowmobile RX1 Service Manual, Page 185Get this manual

2003-2006 Yamaha Snowmobile RX1 Service Manual, Page 185

VALVE AND VALVE SPRINGS 12Measure: Compressed spring force Out of specificationReplace the valve springb Installed length
mm (11.0 12.6 kg at 35.0 mm, 24.3 27.8 lb at 1.38 in) 13Measure: Valve spring tilt Out of specificationReplace the valve
springSpring tilt: Intake 2.5_1.7 mm (0.067 in) Exhaust 2.5_1.8 mm (0.071 in) 14Inspect: Valve lifter DamagescratchesReplace