2011 Arctic Cat 450XC Service Manual, Page 33Get this manual
3Install the valve springs with the painted end of the spring facing away from the cylinder headNOTE: If the paint is not visible, install the ends of the springs with the closest wound coils toward the head CC400D
2Remove each ring by working it toward the top of the piston while rotating it out of the grooveNOTE: When installing new rings, install as complete set onlyATV-1011A
4Place spring retainer over the valve springs; then using the valve spring compressor, compress the valve springs and install the valve keepers
CleaningInspecting Piston Ring Grooves 1Take an old piston ring and snap it into two pieces; then grind the end of the old ring to 45 angle and to sharp edge2Using the sharpened ring as tool, clean carbon from the ring groovesBe sure to position the ring with its tapered side up
CAUTION
Improper cleaning of the ring grooves by the use of the wrong type of ring groove cleaner will result in severe damage to the piston
Measuring Piston-Ring End Gap (Installed)