2006-2014 Honda FourTrax ATV TRX250 EX TRX250X Service Manual, Page 12Get this manual
GENERAL INFORMATION
CYLINDERPISTON SPECIFICATIONS
Cylinder
STANDARD 68.50068.510 (2.69682.6972)
Out-of-round Taper Warpage Piston, Piston 0.0at 15 (0.6) from bottom piston pin, Piston pin hole 1.0piston Piston pin 0.0ring Piston-to-piston pin clearance Piston ring end gap Top Second Oil (side rail) Piston ring-to-ring groove Top clearance Second Cylinder-to-piston clearance Connecting rod small end 1.0Connecting rod-to-piston pin clearance
68.46268.482 (2.69532.6961) 15.00215.008 (0.59060.5909) 14.99415.000 (0.59030.5906) 0.0020.014 (0.00010.0006) 0.200.35 (0.0080.014) 0.400.55 (0.0160.022) 0.200.70 (0.0080.028) 0.0150.045 (0.00060.0018) 0.0150.045 (0.00060.0018) 0.0180.048 (0.00070.0019) 15.01015.028 (0.59090.5917) 0.0100.034 (0.00040.0013)
Unit mm (in) SERVICE LIMIT 68.60 (2.701) 0.10 (0.004) 0.10 (0.004) 0.10 (0.004) 68.40 (2.693) 15.04 (0.592) 14.96 (0 .589) 0.02 (0 .001) 0.5 (0.02) 0.7 (0.03)
0.09 (0 .004) 0.09 (0.004) 0.10 (0.004) 15.06 (0 .593) 0.10 (0.004)