2005 Arctic Cat ATVs factory service and repair manual, Page 158Get this manual
Measuring Rocker Arm (Inside Diameter) 1Using dial calipers, measure the inside diameter of the rocker arm2Acceptable inside
Piston 1Using non-metallic carbon removal tool, remove any carbon buildup from the dome of the piston2Inspect the piston
for cracks in the piston pin, dome, and skirt areas 3Inspect the piston for seizure marks or scuffingRepair with #400 grit
wet-or-dry sandpaper and water or honing oil 2Insert each valve into its original valve location3Install the valve springs
with the painted end of the spring facing away from the cylinder headI NOTE: If the painted end is not visible, install the
ends of the springs with the closest coils toward the head Towards I NOTE: If scuffing or seizure marks are too deep to correct
with the sandpaper, replace the piston 4Inspect the perimeter of each piston for signs of excessive "blowby Excessive "blowby"