2005 Arctic Cat ATVs factory service and repair manual, Page 159Get this manual
Measuring Piston Pin (Outside Diameter) and Piston-Pin Bore 1Measure the piston pin outside diameter at each end and in the
sharp edge2Using the sharpened ring as tool, clean carbon from the ring-groovesBe sure to position the ring with its tapered
side up 2Insert an inside dial indicator into the piston-pin boreThe diameter must not exceed snecificationsTake two measurements
to ensure accuracy 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 cylinder2Using feeler gauge, measure each piston-ring end gapAcceptable