2006-2009 Honda TRX250EX/TRX250X Service Manual, Page 135Get this manual
CYLINDER HEADIVALVECAMSHAFT Remove the new valve guides from the freezerBe sure to install the stopper ring nto the valve guide grooveWhile the cylinder head is still heated, drive each valve guide into the cylinder head from the head cover side until the stopper ring is contacted the cylVALVE GUIDE I
inderheadTOOL: Valve guide driver, 5.S mm
07742-0010100
Let the cylinder head cool to room temperature
Use cultmg oil on the reamer durmg thiS opera tionTake learn the reamer In the gUide while reammg
Ream the new valve guidesInsert the reamer from the combustion chamber side of the cylinder head and always rotate the TOOL:
care not to tilt or reamer clockwise
Valve guide l'8amer, 5.S mm
07984-2000001 07984-2000000 IU.S.A only)
VALVE GUIDE REAMER