2009 Polaris Sportsman 850 XP EFI EPS Service Manual, Page 141Get this manual

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ENGINE Piston Ring Installed Gap
Second: 0.014" 0.008" (0.36 0.20 mm) Oil Control Rails: 0.0196" 0.010" (0.50 0.25mm)
IMPORTANT: DO NOT hone the cylinders or attempt to repair damag