2008 Arctic Cat ThunderCat ATV Service Manual, Page 40Get this manual
ATV-1082
ATV1082A
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 specificationsMeasuring Valve FaceSeat Width 1Using micrometer, measure the width of the valve face
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 into the cylinder head; then position the dial indicator contact point against the outside edge of the valve faceZero the indicator