My fuel line broke on my weedeater. I read another response on how to replace it, but it didn't quite help me (rather mechanically challenged!! ) I took the top screw off the top of the tank to allow me better access. When I was able to see inside the tank, I encountered a piece of line connected to some sort of filter. I found another piece that had a little plastic connector attached. What is that connector for?

Also, why are the two holes on the side of the tank different sizes?

Is there somewhere I can go to view a diagram of how it is supposed to look?

Sorry for the simpleton questions?

Thanks in advance