2005 Polaris Sportsman 400/500 Service Manual, Page 71Get this manual
EH50PL OIL FLOW DIAGRAM
Vent Hose Internal passage to camshaft (front left head bolt)
Oil filter Oil feed to filter
From filter to crankshaft One way valve Bottom fitting is oil exhaust or return to tank Top fitting is oil feed or intake from bottom of tank
Oil Tank
EH50PL Oil Flow Chart
Top of Oil Tank Oil Tank Union Fitting (Upper) Oil Hose Oil Hose Screen Fitting (Bottom of Tank) Union Fitting (Lower) Crankcase Oil Gallery Oil Pump (Scavenging) Oil Strainer
Crankcase