2004 650 Twin Arctic Cat ATV Service Manual, Page 46Get this manual

2004 650 Twin Arctic Cat ATV Service Manual, Page 46

2Remove the valve seal and the lower remaining spring seatDiscard the valve seal Measuring Valve FaceSeat Width 1Using micrometer,
contact point on the outside edge of the valve face; then zero the indicator ATV-1082 2Maximum runout must not exceed specificationsMeasuring
Valve Stem Outside Diameter 1Using micrometer, measure the valve stem outside diameter2Acceptable diameter range (intake
valve) must be within specifications3Acceptable diameter range (exhaust valve) must be within specificationsATV1082A 3Rotate
the valve in the blocks4Maximum runout must not exceed specificationsMeasuring Valve GuideValve Stem Deflection (Wobble Method)
1Mount dial indicator and base on the surface plate; then place the cylinder head on the surface plate2Install the valve