Robin EY28 - Carburetor; Operation and Construation

8. CARBURETOR
8-1 OPERATION and CONSTRUCTION (See Fig. 55 and Fig. 56.)
8-1 -1 FLOAT SYSTEM
The float chamber is located just below the carburetor body and, with a float and a needle valve, maintains a constant fuel
level during engine operation.
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 close
to the shut off the fuel, thereby
keeping the fuel at the reference level.
r By-Pass Choke ,- Pilot Jet
n
I I
Throttle Valve
Pilot Outlet
Needle
. Main Nozzle
Main Air Jet
Body
/-'-
Float
Main Jet
Fig. 55
Float
- 42 -