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Honda CB400F 1989 Service Manual page 56

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6. FUEL
SYSTEM
SERVICE INFORMATION
TROUBLESHOOTING
AIR CLEANER CASE
REMOVAL/
INSTALLATION
CARBURETOR REMOVAL/
INSTALLATION
CARBURETOR SEPARATION
CARBURETOR DISASSEMBLY/
ASSEMBLY
CARBURETOR COMBINATION
FUEL PUMP/FILTER
EMISSION CONTROL SYSTEMS
(California
Model
Only)
6-1
6-8
6-2
6-10
6-13
6-3
I
6-4
6-13
6-6
SERVICE INFORMATION
AWARNING
Gasoline
is
extremely
flammable and i6 explosive
under certain conditions. Work in a well ventilated area. Smoking
or al¬
lowing flames or sparks in the work area or where gasoline is stored can cause fire or
explosion.
Bending or
twisting
the control cables will impair smooth
operation
and
could cause the
cables
to
stick
or bind,
resulting
in loss of
vehicle
control.
CAUTION
-
To
prevent
damage, be sure
to
remove the diaphragms before cleaning air
and fuel
passages
with
compressed air. The
diaphragms might be damaged.
NOTE
If
vehicle is
to
be
stored
for more than one month,
drain
the
float
chambers. Fuel
left in the float
chambers
may
cause
clogged jets resulting in hard starting or
poor
driveability.
When disassembling fuel
system parts, note
the locations of the
O-rings. Replace
them with new
ones
on
reassembly.
Before removing
the carburetors,
place
a suitable container under the carburetor drain
tube,
loosen the drain bolts and
drain the carburetors.
After removing tl
its
carburetors,
cover
The intake
port
of the engine
with
a
shop towel or cover it with
pieces of
tape to
pre¬
vent
any foreign
material
from dropping
into the engine.
The vacuum chamber and
float
chamber
can
be serviced with the carburetors assembled.
For fuel tank removal/installation, see page
2-4.
California Model
Only:
All hoses
used
in
the
secondary
air supply
and
evaporative
emission control
systems
are numbered for
identification.
When
connecting one of
these
hoses, compare
the hose number with the Vacuum Hose Routing Diagram Label,
page 1-29, and
carburetor tubes,
page
6-12.
>
>
i

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Cb-1 1989