2007 Arctic Cat ATVs 400/500/650/700 Service Manual, Page 71Get this manual

2007 Arctic Cat ATVs 400/500/650/700 Service Manual, Page 71

Installing Piston Rings CleaningInspecting Cylinder Head 1Install ring expander (4) in the bottom groove of the piston; then
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 ATV-1085B 2Install the compression rings (1 and 2) so the letter
on the top surface of each ring faces the dome of the pistonRotate the rings until the ring end gaps are on directly opposite
sides of the piston (see illustration)NOTE: The chrome (silver) ring should be installed in the top position ! 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 CC996 726-306A Measuring Cylinder Head Distortion ! CAUTION Incorrect installation of the piston rings will result
in engine damage 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 specifications