2007 Polaris Two Stroke Snowmobile Workshop Repair manual, Page 164Get this manual
CLUTCHING Vary the amount and thickness of spacer washers (washer thickness may vary slightly)Re-index marked spider leg to another towerThis can be done because spider has little effect on overall clutch balanceRe-indexing the spider 13 turn clockwise, or leg, will allow the realignment of the moveable and stationary sheaves as previously marked (D)For EXAMPLE: 0.020" or 0.032" (0.50.8mm) washer removedre-index spider clockwise 13 turnNOTE: Alignment marks on the sheaves should be with in 1" (25.4mm) after final assembly and torquing