8A. Float Type Carburetor (Eh09D); 8A-1 Operation And Construction - Robin EH09D Service Manual

8a. FLOAT TYPE CARBURETOR (EH09D)

8a-1 OPERATION AND CONSTRUCTION

8a-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 the 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.
BY-PASS
PILOT OUTLET
PILOT AIR JET
MAIN NOZZLE
CHOKE
AIR
INTAKE
MAIN AIR JET
FLOAT
Fig. 8-2
- 50 -
NEEDLE VALVE
Fig. 8-1
PILOT JET
FLOAT
MAIN JET
FUEL