NEEDLE VALVE INSPECTION
If
foreign matter is caught between the valve seat and the nee-
dle valve, the gasoline
will continue flowing and overflow. If the
valve seat and needle valve are worn beyond the permissible
limits, similar trouble will occur. Conversel
y,
if
the needle valve
sticks, the gasoline
will not flow into the float chambe
r.
Clean the
float chamber and float parts with gasoline.
If the needle valve is
worn
as
shown,
rep
lace and
the
valve seat with a new one.
Clean the f
ue
l passage of the mixing chamber using com-
pressed air.
FLOAT
HEIGHT
ADJUSTMENT
To check the float height, tum the carburetor upside down.
Measure the float height
® while the float arm
is
just contacting
the needle valve using venier calipers.
Bend the tongue as necessary to bring the
float height ® to the
specified
level.
nQ ! 09900-20101 : Veni
er
calip
e
rs
~
Fl
oat
height
®:
13.0 ±
1.0
mm
(0
.
51
± 0.04 In)
REASSEMBLY
Reassemble the carburetor in the reverse order of disassembly.
Pay attention to the following points:
PILOT SCREW
• After cleaning, install the pilot screw
CD
to the original setting
by turning the screw in
until it lightly seats, and then backing il
oul the same number of turns counted during disassembly.
CD
Piiol screw
CZ'>
Carburetor body
I
Replace the removed O-
ring
wi
th
a
new
one.
NEEDLE
JET
•
Instalilhe
needle jet with the smaller internal diameter portion
of the jet facing to the jel
holder.
FUEL
SY
STEM
4-
13
CO
R
REC
T IN
CO
RR
ECT
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