1995-2003 Honda Foreman TRX400FW TRX400 TRX 400 400FW Service Manual, Page 122Get this manual
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CYLINDER HEADCYLINDER PI STON Refinish Ihe ,allo "pecmcalionsusingdegrees finish cunerAfrftr cuning the seat pply lapping compound to Ihe valve faceand lap the lIalY8 using IIghl pressureAlter lapping