2006-2009 Honda TRX250EX/TRX250X Service Manual, Page 151Get this manual
CYLINDERPISTON
SERVICE INFORMATION
GENERAL
This section covers maintenance of the cylinder and pistonThe cylinder and piston can be serviced with the engine installed in the frame Be careful not to damage the mating surlaces when removing the cylinder00 not strike the cylinder too hard during removal Take care not to damage the cylinder wall and piston Rocker arm lubricating oil is fed through the oil passage (stud bolt hole) in the cylinderClean the oil passage before install ing cylinder
SPECIFICATIONS
""""",_ _,-;"'" Unit: mm (in) STANDARD SERVICE LIMIT68.510 (2.696B 2.6972 68.60 (2.701)
010 (0.004 0.10 (0.0041
; piston pin, piston ring
0.10 (0.004) "",""',"' bottom- 68.46268.482 (2.69532'.6"'9"6"1') ""O='S::;i'Fi="15.00215.008 (0.59060.5909) 15.04 (0.59ir' 14.99415.000 (0.59030.5906) 14.96 (0-:-589)0.014 (0.00010.0006) -h O.OiTO.OOf)Piston 0.200.35 (0.0080.014) 0.5 (0.02) Secondc-oc0.55 (0.0160.022) O4,0 0.7 (0.03) Oil (side 0.20 0.70 (0.008 0.028) rail)