SOHC.co.uk Forums > CB350/400
Fuel Tank Cleaning
PatM:
My petcock after many years...
mattsz:
Filter looks like it's working!
Rob62:
I have used the electrolyte method in the past with great success... remove petcock, seal the remaining hole, fill with electrolyte to the brim, suspend a metal coathanger or similar in the filling hole isolated from the tank with a plastic cap (make a hole in the cap and push the top of the hanger through it) this will be the sacrificial anode. Connect the positive lead of a battery charger to the part of the anode poking out of the top of the cap and the negative to the tank itself (a bared area of metal on the tank). Keep an eye on it at first to make sure it isnt shorting, it should be ok with just a bit of fizzing.... leave it for a few hours, you may use up a couple of anodes... the rust will migrate from the tank to the anodes... keep going till the rust has gone It works! You will be amazed at the amount of crap that builds up on the anode... Lots of detailed advice on the internet.
kevski:
The tank has to be the sacrificial anode, otherwise you are plating the rubbish to the tank.
Athame57:
I gave up because it simply went rusty again. I got a new tank and fittings from David Silvers. I had trouble fitting it at first and they tried it out for themselves and found out that it was a bit narrower at the fitting arches. I and anyone else had to reduce the size of the mounting rubbers so it would slide on.
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