I put a new fuel pump in with all new fuel line back to the sending unit. I'm pretty sure that the fuel pump and rod was put in correctly. I have taken the tank off twice to see what might be happening with the sending unit because I am still not getting fuel to the carb. I am starting to get frustrated. When I took off the last rubber hose fitting that attaches to the sending unit "tube" that is exposed outside of the tank, I noticed that fuel actually came out from the sending unit tube. Therefore, my thought that the tube was clogged doesn't fly. However, I still have no idea how the fuel sending unit actually works...because if it's purpose is simply to indicate how much fuel is the tank and nothing else I still have a problem. Any ideas??