2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 326Get this manual

2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 326

2Acce,etable inside .diameter range is 12.000-12.018 mm (0.472-0.473 mMeasuring Rocker Arm Shaft (Outside Diameter) 1Using
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 Lapping Valves NOTE: Do
not grind the valvesIf valve is damaged, it must be replaced 1Remove all carbon from the valves2Lubricate each valve stem
with light oil; then apply small amount of valve lapping compound to the entire seating face of each valve3Attach the suction
cup of valve lapping tool to the head of the valve4Rotate the valve until the valve and seat are evenly polished5Clean all
compound residue from the valve and seatMeasuring Rocker Arm (Inside Diameter) Towards ATV-1011 4Place spring retainer over