So, I've taken the tank off and it seems the problem is a fracture of the solder/brazing of the connection (nut) where it is attached to the tank.     There are also a couple of pinholes under one of the brackets, which much have been gunked up and only became evident once I started removing the tank.  A tank repair kit seems like a good idea - do you think this would repair the fracture? There is some movement in the nut.   

The olive on the pipe looks ok - but there is something that looks like PTFE plumbing tape wrapped around the pipe under it.  If I were to replace this, would PTFE tape do the trick? (hopefully that's a universal name, not just UK).

Hello all,  I am hoping to make use of your knowledge and experience as I don't have much of either when it comes to Lister generators.

I live in an off-grid house and we occasionally use our 1983 Lister ST1 to run the washing machine, or for power when the weather isn't co-operating with our hydro and solar systems.  The Lister has sprung a slow fuel leak - it is leaking from the bottom of the fuel tank, where the fuel pipe screws in to the tank.  I haven't yet dismantled it all and had a good look, but am wondering 1) the best way of emptying the fuel tank 2) if this is a common problem, and 3) if it's easily solvable or whether we are likely to need a new tank.

I have tried tightening up the nut but that hasn't helped.  It's all so ancient I am worried about making things worse.

Any tips welcome!

Thanks

Jacinta