2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 217Get this manual
3Remove the valve springs; then invert the cylinder head and remove the valvesMeasuring Valve Stem Runout 1Support each valve stem end with the Blocks; then check the valve stem runout using dial indicator ATV1082A
3Rotate the valve in the blocks4Maximum runout must not exceed specificationsMeasuring Valve GuideValve Stem Deflection (Wobble Method)
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 specificationsMeasuring Valve FaceSeat Width 1Using micrometer, measure the width of the valve face