Honda 954 Service Manual page 267

Use a 32-degree cutter to remove the t o p 1-/4 of the
existing valve seat material.
TOOLS:
Flat cutter, 30 m m (32"
Flat cutter, 28 m m (32"
Cutter holder, 4.5 m m
or
equivalent commercially available in
Use a 60-degree cutter to remove the bottom 114 of
the old seat.
Remove the cutter and inspect the area y o u have
ref aced.
TOOLS:
Interior cutter, 30 mm (60"
Interior cutter, 26 m m (60"
Cutter holder, 4.5 m m
or equivalent commercially available in U.S.A.
Install a 45-degree finish cutter and cut the seat t o the
proper width.
Make sure all pitting and irregularities are removed.
Refinish if necessary.
Apply a thin coating o Prussian Blue to the valve seat.
Press the valve through the valve guide and onto the
the vaive seat seat t o make a clear pattern.
in
If the contact area is too high o n the valve, the seat
must be lowered using a 32 degrees flat cutter.
good sealing
IN)
07780-0012200
EX)
07781-0010600
U.S.A.
IN)
07780-0014000
EX)
07780-0014500
07781-0010600
CYLINDER HEAD/VALVES
CONTACT TOO HIGH