2010 Polaris Sportsman 850 Service Manual, Page 146Get this manual

2010 Polaris Sportsman 850 Service Manual, Page 146

ENGINE Piston Ring Installed Gap 1Place each piston ring (A) inside the cylinder (B) (from cylinder head side of crankcase)Use
measurements is general indication of cylinder taper (wear)The cylinder should be measured for taper and out of roundHead
gasket surface = In mmPiston Ring Installed Gap Top: 0.014" 0.008" (0.36 0.20 mm) Second: 0.014" 0.008" (0.36 0.20 mm) Oil
Control Rails: 0.0196" 0.010" (0.50 0.25 mm) Cylinder Warp: .002" (0.05 mm) Max4Inspect cylinder for wear, scratches, or
damage IMPORTANT: DO NOT hone the cylinders or attempt to repair damaged cylinder by honing5Inspect taper and out of round