2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 71Get this manual
ENGINE Oil Flow Diagram
Top of Oil Tank Oil Tank Oil Hose Screen Fitting (Bottom of Tank) Oil Hose Sprocket Chain Crankcase Union Fitting (Lower) Crankcase Oil Gallery Oil Pump (Scavenging) Oil Strainer
Union Fitting (Upper)
Crankcase Oil Gallery
Chain Room
Small End Bearing
Prevents oil from draining into crankcase with engine off One Way Valve
Oil Pump (Feed)
Cam Shaft Journal