1999-2002 TRX400EX Fourtrax Service Manual, Page 116Get this manual
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 (0.7860 in) Calculate the piston-to-piston pin clearanceSERVICE LIMIT 0.096 mm (0.0038in)
Measurethe connecting rod small end I.DSERVICE LIMIT: 20.067 mm (0.7900 in) Calculatethe connecting rod-to-piston pin clearanceSERVICE LlMIT:0.103 mm (0.0041 in)
CYLINDER STUD BOLT REPLACEMENT
Removethe stud bolts from the cylinder Install new stud bolts in their proper positions and tighten themA 10 92 mm stud bolt B: 10 60 mm stud bolt C: 10 73 mm stud bolt TORQUE 20 N'm 12D kgfm, 14Ibf.ft) After installation, measure the stud height from the cylinder surfaceSPECIFIED HEIGHT: 81.5 0.5 mm (3.21 0.02 in) 49.5 0.5 mm (1.95 0.02 in) C: 62.5 0.5 mm (2.46 0.02 in) Adjust the stud height if necessary-l!l