1999-2002 TRX400EX Fourtrax Service Manual, Page 116Get this manual

1999-2002 TRX400EX Fourtrax Service Manual, Page 116

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CYLINDERPISTON Measure piston pin hole 1.0in an and axisTake the maximum reading to determine the I.DSERVICE LIMIT 20.060 mm (0.7898 in) Measurethe piston pin 0.0at three pointsSERVICE LIMIT: 19.964mm