2010 Polaris Sportsman 850 Service Manual, Page 253Get this manual
FINAL DRIVE IMPORTANT: Take care not to stretch the brake line while removing the drive shaft13Remove the drive shaft from the rear gearcase by pulling sharply14Remove the (4) through-bolts retaining the rear gearcase to the frame17Using your hand, press down on the inner PVT cover and continue to rotate the gearcase down and forward until it is removed from the framePress down on cover here