2007 Arctic Cat ATVs factory service and repair manual, Page 298Get this manual
5Remove the exhaust camshaft; then repeat step for the intake camshaftAccount for two alignment pins F1056
6Remove the intake camshaft; then wipe the four valve tappets clean and using suitable marker, number the tappets and mark the corresponding position on the cylinder head1NOTE: This will greatly simplify valve clearance adjustment during assembling
1NOTE: The adjustment shims are of different thicknessWhenever the shims are removed, they must remain with the corresponding valve tappets or complete valve adjustment will be required when assembling