2010 Polaris Sportsman 850 Service Manual, Page 251Get this manual
FINAL DRIVE REAR PROPSHAFT
Removal
1Locate the rear propshaft through the right rear wheel wellPropshaft
NOTE: If needed, remove the right rear wheel to gain better access to the rear propshaft bolts2Remove the (4) bolts retaining the rear propshaft to the rear gearcase input shaft couplerSlide the shaft towards the transmission and pivot the propshaft downSlide the propshaft off the transmission output shaft and out from the vehicle