Honda TRX400EX FOURTRAX 1999 Service Manual page 100

CYLINDER HEAD/VALVE
NOTE:
Follow the refacing manufacturer's operating
instructions.
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
If the contact area is too low on the valve, the seat
must be raised using a 60" interior cutter.
Using a 45" seat cutter, remove any roughness or
irregularities from the seat.
TOOLS
Valve seat cutter, 35
Valve seat cutter, 29
Cutter holder, 5.5 mm
or equivalent commercially available in
Using a
valve seat material.
TOOLS:
Flat cutter, 35
Flat cutter, 30 mm (EX)
Cutter holder, 5.5 mm
or equivalent commercially available in U.S.A.
7-14
32" flat cutter.
a
mm
07780
mm
07780
07781-0010101
flat cutter, remove 114 of the existing
32"
mm (IN)
07780-0012300
07780-0012200
07781-0010101
CONTACT TOO HIGH
CONTACT TOO LOW
-
-
0010300
U.S.A.
OLD SEAT
WIDTH
OLD SEAT
WIDTH
ROUGHNESS
\
OLD SEAT WIDTH
\