Which component is installed first when reassembling the carburetor?

In the process of reassembling a carburetor, the fuel filter screen is typically installed first. The fuel filter screen is crucial as it acts as the first line of defense against debris and contaminants that could enter the carburetor from the fuel supply. By placing it at the beginning of the assembly process, you ensure that any foreign particles are filtered out before they can enter the carburetor body.

Installing the fuel filter screen first sets the stage for a clean fuel supply, which is vital for the proper functioning of the carburetor. This ensures that when you proceed to install other components, they are protected from potential damage that could be caused by dirt or debris in the fuel.

In contrast, gaskets serve to seal the carburetor and prevent fuel leaks, making them a later step in the assembly. The idle jet and shut-off valve also require that the previous components be in place to function correctly, meaning they are installed after the initial assembly is established with the fuel filter screen in position.