2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 115Get this manual

2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 115

24Loosen the adjuster screw jam nuts; then loosen the adjuster screws on the rocker arms in the valve cover 28In crisscross
is felt 26Place the valve cover into position NOTE: At this point, the rocker arms and adjuster screws must not have pressure
on them 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 27Install the top side valve cover cap screws into the
head noting the locations of any with rubber washers; then install the remaining cap screwsTighten only until snug FWhile
holding the adjuster dial at the proper clearance setting, tighten the jam nut securely with the valve adjuster handle 30Place