Check if there is fuel in the tank.
Remove the fuel hose between the fuel pump and the carburetor from the carburetor and direct it to a suitable container. Turn on the starter for a short time, while fuel should flow from the hose in portions.
Caution: Flammable, avoid open flames!
If fuel is not flowing, then remove the hose going to the fuel pump. If fuel leaks from there, check the fuel pump for leaks or the strainer for contamination. To do this, unscrew the screw securing the fuel pump cover, remove the cover and flush the mesh in the fuel.
Attention: For a new pump, it is allowed not to remove the cover and clean the mesh.
If fuel does not flow out, remove the fuel line from the tank and blow through it.
Check the ventilation of the tank for patency, clean it.
Remove the filter in the fuel tank, clean it.