Rip. Chug Chug. Vroom.
Do you hear that? That's the sound of success. Last year I was given a tiller of unknown origin. It didn't run, and that is exactly the reason it was being given to me. I finally got around to looking at it, and the carburetor was plugged up good. I replaced the diaphragm and pickup tube. I ran carb cleaner through the whole thing and blew it out with the air compressor. I put it all back together and gave 'er a tug. The rest is history.