2005 Polaris Sportsman 700/800 EFI Service Manual, Page 213Get this manual
FINAL DRIVE 3Remove the shim, thrust button, and thrust button shim from the gearcase5Inspect the ring gear for abnormal wear, broken, or chipped teethSpin the bearing to check the ball bearings for smoothnessReplace the bearing if needed6Remove the input shaft cover and the pinion shaft from the gearcase housingSee next page