Honda Transalp XL700V Manual page 268

VALVE SEAT REFACING
• Follow the refacer manufacturer's operating
instructions.
• Reface the valve seat whenever the valve guide
has been replaced.
• Be careful not to grind the seat more than neces-
sary.
If the contact area is too high on the valve, the seat
must be lowered using a 32° flat cutter.
If the contact area is too low on the valve, the seat
must be raised using a 60° interior cutter.
Using a 45° cutter, remove any roughness or irregu-
larities from the seat.
TOOLS:
Seat cutter, 27.5 mm (EX)
Seat cutter, 33 mm (IN)
Cutter holder, 5.5 mm
Using a 32° cutter, remove the top 1/4 of the exist-
ing valve seat material.
TOOLS:
Flat cutter, 33 mm (IN)
Flat cutter, 28 mm (EX)
Cutter holder, 5.5 mm
CONTACT TOO HIGH
CONTACT TOO LOW
07780-0010200
07780-0010800
07781-0010101
or equivalent com-
mercially available
07780-0012900
07780-0012100
07781-0010101
or equivalent com-
mercially available
CYLINDER HEAD/VALVES
45°
32°
OLD SEAT
WIDTH
OLD SEAT
WIDTH
60°
ROUGHNESS
OLD SEAT WIDTH
32°
8-21
60°
32°