2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 215Get this manual

2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 215

2Acceptable inside diameter range is 12.000-12.018 mm (0.472-0.473 inMeasuring Rocker Arm Shaft (Outside Diameter) 1Using
#400 grit wet-or-dry sandpaper and water or honing oil2Insert each valve into its original valve location3Install the valve
springs with the painted end of the spring facing away from the cylinder head NOTE: If the painted end is not visible, install
the ends of the springs with the closest coils toward the head Towards 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" indicates worn piston rings or an out-of-round cylinderRemoving Piston Rings ATV-1011 4Place spring retainer over
the valve springs; then using the valve spring compressor, compress the valve springs and install the valve cotters 1Starting