2009 Polaris Sportsman 850 XP EFI EPS Service Manual, Page 142Get this manual

2009 Polaris Sportsman 850 XP EFI EPS Service Manual, Page 142

ENGINE 6Measure in two directions (front to back and side to side) on three levels and record measurementsIf cylinder is
pattern of approximately 45 degrees to ensure piston ring seating, reduce ring vibration, and to aid in lubrication retentionThe
factory applied crosshatch is good for the service life of the cylinder and honing IS NOT required when installing new pistons
andor piston ringsDO NOT attempt to hone the NiCaSil cylindersA special process is required, and improper honing or use of
the wrong type of abrasive stone will result in irreversible cylinder wall damageAny change in surface finish should be followed
by cylinder measurement and an inspection for wearIf cylinders are damaged or worn beyond the service limit, they can be
re-plated with NiCaSil one time only by NiCaSil plating specialistIf cylinder damage is excessive, or if cylinders have been