2005 Polaris Sportsman 400/500 Service Manual, Page 44Get this manual
MAINTENANCE 7Reinstall drain plug (B) and torque to 14 ftlbs(19 Nm)8Loosen clamp (D)9Remove oil hose from screen fitting (C) on bottom of oil tank10Remove screen fitting (C) and clean the screen11Apply Loctitet Thread Sealant 565 (PN 2871956) or an equivalent pipe thread sealant or PTFE sealant tape to clean, oil free threads of fitting (C)12Install fitting (C) and torque to 14-17 ft.lbs(1923 Nm)Be sure to align the fitting (C) with the mark on the back side of the tank13Install oil hose on fitting (C) and reinstall clamp (D)17Install new filter and turn by hand until filter gasket contacts the sealing surface, then turn and additional 12 turnCrankcase Drain
Engine Sump Drain PlugBottom View 18Approximately cup of engine oil will remain in the crankcaseTo drain, remove drain plug found on lower right side of crankcase