2004-2005 Honda TRX450R Factory Sevice Manual, Page 153Get this manual
CYLINDER HEADIVALVE ExcesSive lapping pressure may deform or damage the seatDo not allow lappmg compound to
After cutting the seat, apply lap ping compound and engine oil to the alve face and lap he valve usi ng light pressureChange the angle of lapping tool frequently to pre-
ve nt uneven seat wearAfter lapping, ash any residu al compound off the cylinder head and alv eRecheck the seat contact after lapping
HAND-LAPPIN TOOL
enter the glJIOOs
CYLINDER HEAD ASSEMBLY