4-12 FUEL SYSTEM
If the needle valve is worn, as shown in the illustration, replace
the needle valve assembly with a new one. Clean the fuel pas-
sage of the mixing chamber with compressed air.
FLOAT HEIGHT ADJUSTMENT
To check the float height, turn the carburetor upside down. Mea-
sure the float height
A
while the float arm is just contacting the
needle valve with vernier calipers.
Float height A: 16 ± 1 mm (0.6 ± 0.03 in)
\ 09900-20102: Vernier calipers
• If the float height
A
is out of specification, bend the float arm
1
to bring the float height
A
to the standard range.
• After adjusting, check the float height
A
.
REASSEMBLY AND INSTALLATION
Reassemble and install the carburetor in the reverse order of
removal and disassembly. Pay attention to the following points:
#
THROTTLE STOP SCREW
• Install the throttle stop screw
1
.
The removed gasket and O-rings must be replaced
with new ones.
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