2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 223Get this manual
NOTE: If the journals are worn, replace the camshaft; then measure the clearance againIf it is still out of tolerance, replace
the piston; then install the thin oil rings (3) over the expander making sure the expander ends do not overlap NOTE: With
the weight extended, the unloader flat should be even with the camshaft journal ATV-1085B BStagger the end gaps of the upper
and lower thin oil rings according to the illustrationNOTE: Note the direction of the exhaust side of the piston (5) for
correct ring end gap orientation NOTE: When the weight is released, the spring should return the assembly to the "unload"