Polaris 2001 High-Performance Snowmobile Service Manual (PN 9916690), Page 85Get this manual
ENGINE Disassembly, Cont13Remove impeller nut
14Slide shaft out back side
15Inspect bearingsReplace if necessaryReplace mechanical seal using the special tools listed belowUse the seal press to install new mechanical seal in cover with spring sleeve toward impeller housingInstall seal guide over end of shaft and apply light film of grease to seal guideCarefully install shaft and bearings in coverAssemble 10x14mm washer, impeller, washer, and nutTorque impeller nut to specification