2008 Arctic Cat 700 Diesel ATV Service Manual, Page 90Get this manual
NOTE: Replacement pistons are only supplied as class AClass and are reserved for production enginesReplacement pistons are available oversized by 0.50 mm (0.020 in and 1.00 mm (0.039 in and are supplied with piston rings ! CAUTION
Do not attempt to use standard rings on oversized pistons or oversized rings on standard pistonsSevere engine damage will occur
25Using suitable outside micrometer, measure piston skirt diameter at distance of mm (0.350 in from the bottom of the skirt and 90 from the piston pin axisPistons and cylinder measurements must be within specifications as listed in the following chartClass markings are stamped on the cylinder deck
NOTE: The engine block must be bored in order to install oversized pistons
26Thoroughly clean all components after machining to insure no filings or metal chips are presentBlow out all oil galleys with compressed air