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8. CARBURETOR
8-1 OPERATION AND CONSTRUCTION
8-1-1 FLOAT SYSTEM
The float chamber is located below the carbure-
tor body and, with a float and a needle valve,
maintains a constant fuel level during engine op-
eration.
The fuel flows from the fuel tank into the float
chamber through needle valve. When the fuel
rises to a specific level, the float rises, and when
its buoyancy and fuel pressure are balanced, the
needle valve closes to shut off the fuel, thereby
keeping the fuel at the predetermined level.
PILOT OUTLET
BY-PASS
PILOT AIR JET
CHOKE
AIR
INTAKE
MAIN AIR JET
MAIN NOZZLE
FLOAT
NEEDLE VALVE
FUEL
PILOT JET
FLOAT
MAIN JET
Fig. 8-2
Fig. 8-1
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