2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 215Get this manual
CYLINDER HEADIVALVECA MS HAFT Take care not 10 "II or lea'! the reamer n rile gUide wrtile
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Ream the new valve guidesInsert the reamer from the combustion chamber side of the head and always rotate the ream er clock -
Use currmg 011 on rhe reemer dlJrmg
Val ve guide reame r, 5.5 mm 079 84-2000001 079842000000 (U.S.Ao nly)
UpH'H!lOn
Clean the cylinder head thoroughly to remove any metal particles after ream ing and rctecc the valve seat (page 9-141
VALVE SEAT INSPECTIONREFACING
INSPECTION