1994-2001 Yamaha Venture/V-Max 500 Series Snowmobile Service Manual, Page 52Get this manual

1994-2001 Yamaha Venture/V-Max 500 Series Snowmobile Service Manual, Page 52

HIGH ALl11lJDE TUNING 2E341 HIGH ALTITUDE TUNING To attain the best performance in high altitude conditions, carefully tune
to the chart (page 2-27) Test main jet size (performanceplug color) OK Adjust main jet sizeI+- OK Not OK Decide if problem
is pilot jet and adjust accordingly Check engagement speed and shift performance High altitude tuning OK Adjust primary clutch