2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 242Get this manual

2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 242

ATum the engine over until the piston reaches top-dead-center on the compression stroke BPlace the valve adjuster onto the
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 four top-side cap screws 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 the two tappet covers with O-rings into position; then install and tighten the cap screws securely