2009 Polaris Sportsman 850 XP EFI EPS Service Manual, Page 122Get this manual

2009 Polaris Sportsman 850 XP EFI EPS Service Manual, Page 122

ENGINE Valve Inspection 12Remove all carbon from valves with soft wire wheel or brushCheck valve face for runout, pitting,
top middle and end of the guide using small hole gauge and micrometerMeasure in two directionsCheck end of valve stem for
flaring, pitting, wear or damage = In mmValve Guide I.D 0.23672"0.000295" (6.06170.0075 mm) 4Inspect split keeper groove
for wear or flaring of the keeper seat area7Subtract valve stem measurement from the valve guide measurement to obtain stem
to guide clearanceNOTE: The valve guides cannot be replacedBe sure to measure each guide and valve combination individually
NOTE: The valves can be re-faced or end ground, if necessaryThey must be replaced if extensively worn, burnt, bent, or damaged