Dear Eugene Rounds,
Thank you very much for your quick responds and answers.
You are right... what I thought is the return line is actually the main fuel line. It goes from the carburetor the bottom of the fuel tank lid and then into the tank with the fuel filter attached (strange).
Thank you very much again for your help. Without your answer, I would not be able to fix the Brush Cutter.
Sincerely,
Walter