2010 Polaris Sportsman 850 Service Manual, Page 103Get this manual
ENGINE Engine SpecificationsEH085OLE013
CYLINDER HEAD (IN MM) Cam Lobe HeightIntake (Standard) Cam Lobe HeightExhaust (Standard) Camshaft Camshaft Journal Outer Diameter(All) Camshaft Journal Bore Inner Diameter(All) Camshaft Oil Clearance Camshaft End Play Rocker Shaft O.D(Intake and Exhaust) Rocker Arm and Shaft Rocker Shaft Bore I.D(Cylinder Head) Rocker Arm Bore I.D(Intake and Exhaust) Cylinder Head Cylinder HeadSurface warp limit Cylinder HeadStandard height Valve SeatContacting WidthIntake Valve Seat Valve SeatContacting WidthExhaust Valve Seat Angle Valve Guide Inner Diameter Valve Guide Valve Guide Protrusion Above HeadIntake Valve Guide Protrusion Above HeadExhaust Valve Lash (Cold)Intake Valve Lash (Cold)Exhaust Valve Margin ThicknessIntake Valve Margin ThicknessExhaust Valve Valve Stem DiameterIntake Valve Stem DiameterExhaust Valve Stem Oil ClearanceIntake Valve Stem Oil ClearanceExhaust Valve Stem Overall LengthIntake Valve Stem Overall LengthExhaust Valve Spring Free Length Valve Spring Valve Spring Installed Height 0.897" 0.908" .8632" .8665" 0.0033" 0.008" (22.795 mm) (23.067 mm) 0.0004" (21.925 0.0004" (22.01 0.0008" (0.085 0.004" (0.20 0.01 mm) 0.01 mm) 0.02 mm)