2010 Polaris Sportsman 850 Service Manual, Page 228Get this manual

2010 Polaris Sportsman 850 Service Manual, Page 228

FINAL DRIVE 12Remove the vent line and the (4) bolts securing the front gearcase to frame Gearcase DisassemblyInspection
and rotate it in the frame so the input shaft is facing you14Remove the gearcase from the front LH wheel well area and carefully
slide it between the upper and lower A-arms NOTE: Piston pump assembly is non-serviceable item and should not be disassembledReplace