2004 Arctic Cat ATVs factory service and repair manual, Page 182Get this manual

2004 Arctic Cat ATVs factory service and repair manual, Page 182

12While holding the cam chain sprocket to the side, install the rear cam chain tensioner guide into the cylinder headInstall
the valve cover mating surfaceI NOTE: When the camshaft assembly is seated, make sure the alignment pin in the camshaft aligns
with the smallest hole in the sprocket Care must be taken that the tab washer is installed correctly to cover the alignment
hole on the sprocketIf the alignment pin falls out, severe engine damage will resultI NOTE: Note the position of the alignment
marks on the end of the camshaftThey must be parallel with the valve cover mating surfaceIf rotating the camshaft is necessary
for alignment, do not allow the chain and sprocket to rotate and be sure the cam lobes end up in the down position 17When
the camshaft assembly is seated, ensure the followingAPiston still at top-dead-center BCamshaft lobes directed down (toward