2006 Honda TRX680 Rincon Factory Service Manual, Page 217Get this manual

2006 Honda TRX680 Rincon Factory Service Manual, Page 217

CYLINDER HEADVALVECAMSHAFT Using 32 flat cutter, remove 14 of the existing valve seat materialTOOLS: Flat cutter, 38.5 mm (IN) Flat cutter, 35 mm (EX) Cutter holder, 5.5 mm

07780-0012400 07780-0012300 07781-0010101

OLD SEAT WIDTH

or equivalent commercially available in U.S.A
Using 60 interior cutter, remove 14 of the existing valve seat materialTOOLS: Interior cutter, 34 mm (INEX) 07780-0014700 Cutter holder, 5.5 mm 07781-0010101 or equivalent commercially available in U.S.A
OLD SEAT WIDTH