2011 Arctic Cat 450/550/650/700/1000 ATV Service Manual, Page 86Get this manual
NOTE: Note the direction of the exhaust side of the piston (5) for correct ring end gap orientation 2The ring with the orientation mark (MTOP or TOP) should be installed in the second (middle) groove and the ring with the orientation mark (M or O) should be installed in the first (top) groove
3Place 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
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
ATV-1024A
Measuring Cylinder Head Distortion 1Remove any carbon buildup in the combustion chamberATV-1024B
CAUTION
Incorrect installation of the piston rings will result in engine damage