1985-1987 Honda TRX 250 Fourtrax 250 Service Manual, Page 65Get this manual
CYLINDER HEADV ALVES VALVE GUIDE REPLACEMENT Heat the cylinder head to 10Q"e (212"F)with hot plate or oven(1
fVALVE GU ID REMOVER
To avoid bumswear heal'Y glOl'ts when handling the healed
c)'linder head
CAUTION
Do no lise warpingQ
heal rhe cylinder head; if lIIay cause
Support the cylinder head and drive out the old guides from the combustion chamber side of the cylinder head
Valve guide remover
077420010100 or
079423290100
CAUTION
Avoid dallaging Ihe cylinder headPlace new O-ring on the new valve guideDrive in the guide from the top of the head