2003 Polaris Deep Snow Snowmobiles Service Manual, Page 190Get this manual
DRIVEDRIVEN CLUTCHES Drive Clutch Assembly
1Place the correct number of spacer washers beneath the spider
2Assemble clutch making sure "X" marks on movable sheave and spider, or reference marks made before disassembly are aligned to achieve proper balanceNOTE:If belt to sheave clearance is being changed by adding or removing washers from under the spider, and the sheaves were marked before disassembly, follow indexing procedure on page 5.32