2001 Polaris Sportsman 400-500 DUSE and H.O. Service Manual, Page 294Get this manual
TRANSMISSION
TRANSMISSION ASSEMBLY, CONT16Make sure surface of access plate and transmission are clean and free of oil and greaseApply 3Bond 1215 to mating surface of transmission caseInstall access plate with notch to front as shown, torque screws to specification
Access Plate Screws:10 ftlbs(11-14 Nm)
17Using the Magnum crankshaft installation tool, lubricate and carefully install the front seal until flush with housing
18Assemble HiLowReverse shaft as shownMachined (flat) side of retainer should face direction of thrustSliding highreverse engagement dog is symmetrical and can be installed either wayThe low gear dog must face low gearBearing Low Gear Retaining Ring Engagement Dog, Low Needle Bearing Retaining Ring High Bearing Gear Washer