2007 Arctic Cat ATVs factory service and repair manual, Page 285Get this manual
14Seat the cam sprocket onto the camshaft making sure the alignment pin in the camshaft aligns with the smallest hole in the sprocket; then place the camshaftsprocket assembly onto the cylinder ensuring the following i NOTE: At this point, oil the camshaft bearings, cam lobes, and the three seating journals on the cylinder
13With the cam lobes directed down (toward the piston), maneuver the camshaftsprocket assembly through the chain and towards its seating position; then loop the chain over the sprocket
APiston still at top-dead-center
BCamshaft lobes directed down (toward the
piston)CCamshaft alignment marks parallel to the valve cover mating surface
DRecessed side of the sprocket directed toward