2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 281Get this manual
CYLINDER HEAD 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 Cylinder Head
! CAUTION
NOTE: Support the connecting rod with rubber bands to avoid damaging the rod or install the Connecting Rod Holder
The cylinder head studs must be removed for this procedure
! CAUTION
Do not allow the connecting rod to go down inside the crankcaseIf the rod is down inside the crankcase and the crankshaft is rotated, severe damage will result