2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 370Get this manual

2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 370

23Rotate the crankshaft until the second cap screw securing the sprocket to the camshaft can be installed; then install the
nut securing the tappet adjuster screw; then rotate the valve adjuster dial clockwise until the end is seated in the tappet
adjuster screw c27Place the valve cover into position NOTE: At this point, the rocker arms and adjuster screws must not have
pressure on them While holding the valve adjuster dial in place, use the valve adjuster handle and loosen the jam nut; then
rotate the tappet adjuster screw clockwise until friction is felt DAlign the valve adjuster handle with one of the marks
on the valve adjuster dialEWhile holding the valve adjuster handle in place, rotate the valve adjuster dial counterclockwise
until proper valvetappet clearance is attained NOTE: Refer to the appropriate Specifications for the proper valvetappet clearance
NOTE: Rotating the valve adjuster dial counterclockwise will open the valvetappet clearance by 0.05 mm (0.002 in per mark