In a properly adjusted float-type carburetor, the fuel level within the float chamber is typically:

In a properly adjusted float-type carburetor, the fuel level within the float chamber is typically slightly lower than the discharge nozzle outlet. This arrangement is crucial for the correct operation of the carburetor.

When the fuel level is below the discharge nozzle, it creates a condition that allows fuel to be drawn into the airstream when the engine is running. The velocity of air flowing through the venturi creates a low-pressure area, which encourages the fuel to rise from the float chamber through the discharge nozzle into the engine's intake. This is essential for ensuring that the fuel-air mixture is properly atomized and ready for combustion.

If the fuel level were equal to or higher than the discharge nozzle outlet, it could lead to flooding, resulting in poor engine performance, starting difficulties, or even stalling. Therefore, maintaining a slightly lower fuel level than the discharge nozzle outlet is vital for ensuring optimal fuel flow and engine efficiency.