2008 Polaris ATV Predator 50, Sportsman Outlaw 90 Service Manual, Page 55Get this manual
ENGINETRANSMISSION Engine Lubrication
Oil Type: Above 32 Polaris Synthetic Youth 4-Stroke Oil (40 W) Quart(PN 2876248) Gallon(PN2876249) Below 32 Polaris Semi-Synthetic Engine Oil (20W-40) Quart(PN 2872175) Gallon(PN2872176) Capacity: Approximately 30 oz(900ml) Drain Plug (Engine Oil): 14 ftlbs(19 Nm) Screen Fitting: 11 ftlbs(15 Nm) Oil Pressure Specification: Not Applicable For break-in period after engine top end service, use an SAE 40W mineral based oil to ensure complete piston ring seating to cylinder wallChange to above recommendation after 10 hours
Finding Top Dead Center (TDC)
Top Dead Center (TDC) is referenced throughout this sectionProperly locate TDC on compression stroke prior to: Top end disassembly or assembly Timing the cam shaft Valve clearance inspectionadjustment Two methods of finding TDC are shown belowUSE THE CAMSHAFT SPROCKET TIMING MARK 1Remove bolt (A) and camshaft sprocket cover (B)