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9.
CARBURETOR
9-1
OPERATION
and
CONSTRUCTION
(see
Figs.
9-1-1
and
9-1-2)
9-1-1
FLOAT
SYSTEM
The float chamber is located just below carburetor main body and serves to maint
ain the fuel
I
.eve1 at a cons itant height by a
joint action of float
(F)
and needle valve
(NV)
incorporated. The fuel flows
from
the fuel tank into float chamber via needle
valve, which is kept open while the fuel level
is
low,
but closed when the fuel level reaches
a
predetermined level
cowing
the
float
to move
up.
[THROTTLE
VALVE
r-BY.PASS
rMAlN
NOZZLE
Fig.
9-
7-
1
,-NEEDLE
VALVE
FLOAT
CHAMBER
1
Fig.
9-
1-2
-22-