2008 Arctic Cat ATVs factory service and repair manual, Page 58Get this manual
A CAUTION
Water or parts-cleaning solvent must be used in conjunction with the wet-or-dry sandpaper or damage to the sealing surface may result
Measuring Cylinder Head Distortion
1Remove any carbon buildup in the combustion chamber2Lay straightedge across the cylinder head; then using feeler gauge, check the distortion factor between the head and the straightedge3Maximum distortion must not exceed specificationsInspecting Cam Chain Guide
1Inspect cam chain guide for cuts, tears, breaks, or chips2If the chain guide is damaged7it must be replacedHoning Cylinder
1Using slide gauge and dial indicator or snap gauge7measure the cylinder bore diameter in three locations from top to bottom and again from top to bottom at 90' from the first measurements for total of six measurementsThe trueness (out-of-roundness) is the difference between the highest and lowest readingMaximum trueness (out-of-roundness) must not exceed specifications