2001 Arctic Cat ATVs factory service and repair manual, Page 218Get this manual
Measuring Cylinder Head Distortion
! CAUTION
Water or parts-cleaning solvent must be used in conjunction with the wet-or-dry sandpaper or damage to the sealing surface may resultFig3-807
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 is 0.05 mm (0.002 inFig3-805
Fig3-808
Fig3-806