It is possible that not enough gasoline is present in the float chamber.
In this the float chamber and mixing chamber are concentric.
A restricted opening connects the float chamber with the cylindrical chamber so that the gasoline level is the same in both.
These are: First, Automatic means for filling the float chamber when the gasoline goes below a certain level.
The diagram shows the gasoline within the U-shaped tube, so that it is on a level with the gasoline in the float chamber.
The float guarantees an even level of gasolene in the float chamber at all times.
When the level of gasoline in the float chamber was lowered the float would fall and the needle valve uncover the opening.
The device consists of two main parts (Fig. 44)—the float chamber and the jet chamber.