2008 Yamaha Snowmobiles FX NYTRO Factory Service Manual, Page 72Get this manual

2008 Yamaha Snowmobiles FX NYTRO Factory Service Manual, Page 72

CLUTCHGEAR SELECTION INSP ADJ The clutch may require tuning depending upon where the snowmobile will be operated and the
unfavorable conditions (wet snow, icy snow, hills, or rough terrain), however, engine speed may decrease after the shifting
speed has been reached Engine speed Good condition Clutch shifting speed Clutch engagement speed Starting position Distance
travelled 800 (2,500 ft) GEAR SELECTION The reduction ratio of the driven gear to the drive gear must be set according to
the snow conditionsIf there are many rough surfaces or unfavorable snow conditions, the drivedriven gear ratio should be
increasedIf the surfaces are fairly smooth or better snow conditions exist, decrease the ratioGear ratio chart The drive