2008 Arctic Cat ATVs factory service and repair manual, Page 223Get this manual
INOTE: If the journals are worn, replace the camshaft; then measure the clearance againIf it is still out of tolerance, replace the cylinder head 2If damaged, the camshaft must be replaced
Inspecting Camshaft Automatic Decompression Springfunloader Assembly
Installing Top-Side Components
APiston BCylinder
iNOTE: If the piston rings were removed, install them in this sequence
1Inspect the spring, weights, and unloader for damage and freedom of movement
AInstall ring expander (4) in the bottom groove of the piston; then install the thin oil rings (3) over the expander making sure the expander ends do not overlap
Ring End Gap #3 Thin #3 Thin Oil Ring Oil Ring End Gap End Gap