2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 164Get this manual
AT THIS POINT To service center crankcase components only, proceed to Removing Left-Side Components
Servicing Top-Side Components
NOTE: Whenever part is worn excessively, cracked, or damaged in any way, replacement is necessary
14Using the Piston Pin Puller, remove the piston pinAccount for the opposite-side circlipRemove the pistonNOTE: It is advisable to remove the opposite-side circlip prior to using the puller
VALVE ASSEMBLY When servicing valve assembly, inspect valve seats, valve stems, valve faces, and valve stem ends for pits, burn marks, or other signs of abnormal wearNOTE: Whenever valve is out of tolerance, it must be replaced
CleaningInspecting Valve Cover
NOTE: If the valve cover cannot be trued, the cylinder head assembly must be replaced