2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 220Get this manual

2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 220

3Place the cylinder head on the surface plate covered with #400 grit wet-or-dry sandpaperUsing light pressure, move the cylinder
Cylinder Head Distortion 1Remove any carbon buildup in the combustion chamber726-306A ! CAUTION Incorrect installation of
the piston rings will result in engine damage 2Lay straightedge across the cylinder head; then using feeler gauge, check
the distortion factor between the head and the straightedge3Maximum distortion must not exceed specifications CYLINDERCYLINDER
HEAD ASSEMBLY NOTE: If the cylindercylinder head assembly cannot be trued, they must be replaced CleaningInspecting Cylinder
Head ! CAUTION The cylinder head studs must be removed for this procedure 1Using 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 surface2Inspect the spark plug hole for any damaged threadsRepair damaged threads using "heli-coil" insert CleaningInspecting