2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 327Get this manual

2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 327

PISTON ASSEMBLV NOTE: Whenever piston, rings, or pin are out of tolerance, they must be replaced 2Remove each ring by working
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) 1Place each piston ring in the wear portion of the cylinderUse the piston to position each ring squarely
in the cylinderAN135 NOTE: If scuffing or seizure marks are too deep to correct with the sandpaper, replace the piston 2Using
feeler gauge, measure each piston-ring end gapAcceptable ring end gap must be within range of 0.10-0.25 mm (0.0039-0.0098
in both rings 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 1Starting with the top ring, slide one end of the ring out of the