2006 Arctic Cat ATVs 400/400TBX/400TRV/500/500TBX/500TRV/650H1/650 V-Twin Service Manual, Page 78Get this manual

2006 Arctic Cat ATVs 400/400TBX/400TRV/500/500TBX/500TRV/650H1/650 V-Twin Service Manual, Page 78

4Place spring retainer over the valve springs; then using the valve spring compressor, compress the valve springs and install
or seizure marks are too deep to correct with the sandpaper, replace the piston 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 4Inspect the perimeter of
each piston for signs of excessive "blowby Excessive "blowby" indicates worn piston rings or an out-of-round cylinderRemoving
Piston Rings Measuring Piston-Ring End Gap (Installed) 1Place each piston ring in the wear portion of the cylinderUse the
piston to position each ring squarely in the cylinder2Using feeler gauge, measure each piston-ring end gapAcceptable ring