2007 Yamaha Apex Factory Service Manual, Page 45Get this manual

2007 Yamaha Apex Factory Service Manual, Page 45

DRIVE V-BELTENGAGEMENT SPEED CHECK INSP ADJ 4Inspect: Drive V-belt CracksdamagewearReplaceOil or grease on the V-beltCheck
V-belt circumference Out of specificationReplaceV-belt circumference: 1,129 1,137 mm (44.4 44.8 in) ENGAGEMENT SPEED CHECK
1Place the machine on level surface of hardpacked snow2Inspect: Clutch engagement speed Inspection steps: Start the engine,
and open the throttle lever graduallyS Check the engine speed when the machine starts moving forwardOut of specificationAdjust