Honda CB900F 919 (2001) [212/432] Cylinder head valves

Honda CB900F 919 (2001) [212/432] Cylinder head valves
Use a eO-degree
cutter
to
remove
the
bottom
1/4
of
the
old
seat
.
TOOLS:
Interior
cutter,
24
mm
(SO
'
IN/
EX)
Cutter
holder,
4.5
mm
07780
-0010S00
07781
-0010S00
or
equivalent
commer
-
cially available
CYLINDER HEAD/VALVES
A
OLD SEAT WIDTH
-,
~
----
- - - --'S{\
!
Using
a
45
~
seat cutter, cut
the
seat to
the
proper
width.
Make
sure
that
all
pitting
and
irregularities
are removed.
Refinish if necessary.
After
cutting
the
seat,
apply
lapping
compound
to
the
valve
face, and lap
the
valve
using
light
pressure.
I NOTICE I
Excessive
lapping
pressure
may
deform
or
damage
the seat.
Change
the
angle
of
lapping
tool
frequently
to
pre
-
vent uneven seat wear.
Do
not
allow
lapping
compound
to
enter
the guides.
~
/'
1.0
mm
10.04 in)
"
/
After lapping, wash all residual
compound
off
the
cylinder
head and valve.
8-19

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