2004 Arctic Cat ATVs factory service and repair manual, Page 276Get this manual
6If clearance is excessive, measure the journals of the camshaft 2If damaged, the camshaft must be replacedI NOTE: If the journals are worn, replace the camshaft; then measure the clearance againIf it is still out of tolerance, replace the cylinder head
Inspecting Camshaft SpringIDrive Pin 1Inspect the spring and drive pin for damage