2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 54Get this manual
NOTE: The valve seals must be replaced 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
Measuring Valve Face Radial Runout 1Mount dial indicator on the surface plate; then place the valve stem on set of blocks2Position the dial indicator contact point on the outside edge of the valve face; then zero the indicator
ATV1082A ATV-1082
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