2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 241Get this manual

2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 241

CCamshaft alignment marks parallel to the valve cover mating surface DRecessed side of the sprocket directed toward the cam
pin falls out, severe engine damage will result 17Install the cylinder head plug with the open end facing the camshaft18Remove
the cap screw from the end of the chain tensionerAccount for the plunger, spring, and O-ring 21Install the cap screw and
spring into the end of the cam chain tensionerTighten securely 1l((01"""l'6'''61hthUd 19Depress the spring-loaded lock and
push the plunger into the tensioner 22Rotate the crankshaft until the first cap screw securing the sprocket to the camshaft
can be installed; then install the cap screwDo not tighten at this time23Rotate the crankshaft until the second cap screw