2011 Arctic Cat 450/550/650/700/1000 ATV Service Manual, Page 39Get this manual
ATV-1011A
4Place spring retainer over the valve springs; then using the valve spring compressor, compress the valve springs and install the valve keepers
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 only
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 upCC132D
CAUTION