Fuel Leak cure

Fuel was leaking from somewhere between the mechanical fuel pump on the side of the block and the carb. It looks as though this was a steel pipe originally, but at some point it's had a section removed and replaced by two lengths of rubber hose and an in line fuel filter. As soon as I took off the assembly it became clear that the plastic casing of the in line filter was cracked. This explains why the leak was sometimes worse than other times and sometimes didn't seem to be occurring at all.

I replaced the whole pipe with a copper one, using the original Unions and flaring the ends like a brake pipe - job done!