2008 Arctic Cat ATVs factory service and repair manual, Page 118Get this manual
CYLINDERICYLINDER HEAD ASSEMBLY =NOTE: If the cylinderlcylinder head assembly cannot be trued, they must be replaced
Cleaningllnspecting Cylinder Head
A CAUTION
The cylinder head studs must be removed for this procedure
Using non-metallic carbon removal tool, remove any carbon buildup from the combustion chamber being careful not to nick, scrape, or damage the combustion chamber or the sealing surfaceInspect the spark plug hole for any damaged threadsRepair damaged threads using "heli-coil7'insertPlace the cylinder head on the surface plate covered with #400 grit wet-or-dry sandpaperUsing light pressure, move the cylinder head in figure eight motionInspect the sealing surface for any indication of high spotsA high spot can be noted by bright metallic finishCorrect any high spots before assembly by continuing to move the cylinder head in figure eight motion until uniform bright metallic finish is attained
Cleaningllnspecting Cylinder