Polaris 2001 High-Performance Snowmobile Service Manual (PN 9916690), Page 82Get this manual
ENGINE NOTE: Inspect all parts for wear or damage during disassemblyReplace all seals, O-rings, and gaskets with Genuine Polaris parts during assemblyRefer to pages 2.49-2.60 for general inspection proceduresDisassembly600 big block, 700, 800 twins 1Remove oil pump
2Remove recoil housing
3Remove recoil hubInspect waterpump drive belt for missing, cracked, or broken drive cogsReplace if worn