1987 Honda Fourtrax TRX 250X Service Manual, Page 69Get this manual
CYLINDER HEADVALVES Place new Q.ring on the new valve guideDrive in the guide from the top of the head
Valve guide remover, 5.5 mm
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Check to be sure the new guide was not damaged during in-
stallation, then ream the guideNOTE
Use cutting oil on the reamer during this operationAlways rotate the reamer in the same direction
Clean the cylinder head thoroughly to remove any metal parti-