Removing Fuel Tank Problems HELP!

Right guys I found out my car wasent overfueling. As hardly any fuel was making it to the glass cased filter in the bay.

I'v opted to remove the fuel tank to give it a good clean, and change the fuel filler neck.

Can someone guide me in how to remove the petrol tank and what needs to be changed etc? Its a 1.1 carb engine so would the fuel tank have a filter? I'm clueless so anyhelp would be great.  

Regards
Jassi

Have a look here for cleaning small block fuel tank in situ. This thread explains fuel tank removal. No in tank filter for small blocks.

Cheers