2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 206Get this manual
CYLINDER HEADIVALVECAMSHAFT TOOLS Valve spring compressor
07757-0010000
Valve guide driver, 5.5 mm 07742-0010100
Valve guide reamer, 5.5 mm 079842000001
or 07984-2000000 {U.S.Aontvl
Valve seat cutter, 35 mm (45" INEX) 07780-0010400
Flat cutter, 38.5 mm (32 IN) 07780-0012400
Flat cutter, 35 mm (32 EXl
07780-0012300
or equivalent commercially