2009 Polaris Sportsman 850 XP EFI EPS Service Manual, Page 222Get this manual
FINAL DRIVE Gearcase Assembly
NOTE: Refer to the photos used in the "Gearcase DisassemblyInspection" procedure when needed, while assembling the front gearcase12Thoroughly clean all gearcase components before beginning reassemblyInstall new seals and O-rings as shown (included in the Seal Repair Kit)6Install the cam, armature plate and input cover assembly with new O-ringTorque the input cover screws to specification
Input Cover Screws: 7-11 ftlbs(9-15 Nm) 345Apply assembly grease to the seal lips to prevent from damaging the seals upon assemblyInstall the input shaft assemblyInstall the neck onto the main gearcase using new O-ringsTorque the screws to specification8Install the roll cage and rollers into the ring gearInsert the rollers as the roll cage is installed