1997-2004 Honda Fourtrax Recon TRX250TE/TM Service Manual, Page 133Get this manual
CYLINDER HEADCYLINDERPISTON Remove the cylinder gasket and dowel pins
PISTON REMOVAL
Do not let the
Remove the piston pin clip with pliersPress the piston pin out of the piston and remove the piston
pison pin clips fall into the crankcase
CYLINDERPISTON INSPECTION
CYLINDER
Inspect the cylinder bore for wear or damageMeasure the cylinder t.Oin the and axes at three levelsTake the maximum reading to determine the cylinder wearSERVICE LIMIT: 68.6 mm (2.10 in) Calculate the piston-to-cylinder clearanceTake maximum reading to determine the clea ranceRefer to page 7-23 for measurement of the piston
0 .0 SERVICE LIMIT: 68.4 mm (2.69 in) Calculate the taper and out-of-round at three levels in the and axesTake the maximum readi ng to determine the measurementsSERVICE LIMITS: Taper: 0.10 mm (0.004 in) Out-of-round: 0.10 mm (0.004 in) The cylinder must be rebored and an oversize piston fitted if the service limits are exceededThe following oversize pistons are available: 0.25 mm (0.010 in) 0.50 mm (0.020 in) 0.15 mm (0.030 in) 1.00 mm (0.039 in) The piston-!oeylinder clearance for the oversize piston must be: 0.0180.048 mm (0.00010.0019 in)TOP