2011 Arctic Cat 400 TRV ATV Service Manual, Page 31Get this manual
Removing Valves
Servicing Top-Side Components
NOTE: Whenever part is worn excessively, cracked, or damaged in any way, replacement is necessary
NOTE: Keep all valves and valve components as setNote the original location of each valve set for use during installationReturn each valve set to its original location during installation
1Using valve spring compressor, compress the valve springs and remove the valve keepersAccount for an upper spring retainer
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 Cover
NOTE: If the cover cannot be trued, the cylinder head assembly must be replacedCC994
1Wash the cover in parts-cleaning solvent2Place the cover on the Surface Plate covered with #400 grit wet-or-dry sandpaperUsing light pressure, move the cover in figure eight motionInspect the sealing surface for any indication of high spotsA high spot can be noted by bright metallic finishCorrect any high spots before assembly by continuing to move the cover in figure eight motion until uniform bright metallic finish is attained