2007-2011 Polaris IQ Snowmobiles Service Manual, Page 334Get this manual
PVT System Spider Indexing
NOTE: Spider indexing effects belt to sheave clearance and clutch balancePlease read all procedures before proceeding1Remove and disassemble clutch 2Add or remove spider washers as required to achieve desired belt-to-sheave clearanceMake sure that the stepped washer (A) is on the bottom of the spacer stack (B)For example: If belt to sheave clearance is .020 too large, removing one .020 shim will position the movable sheave closer to the fixed sheave reducing belt to sheave clearance by .020 NOTE: Install the clutch spacer (stepped washer) with the lip facing the spider3Place the correct number of spacer washers (B) between the spider and clutch spacer (A)The following washers are available for fine tuning: 5210752.020 (.51mm) 5242981.025 (.63mm) 5210753.032 (.81mm) 5210754.050 (1.27mm)
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 balance(A) Re-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 torquingWhen assembling new clutch with all of the same components, it is not uncommon for the marks not to line up