I have a mint condition Optimus 00, except the pump valve leaks fuel into the pump chamber. It is a very slow leak as the stove will hold pressure and run nicely, but fuel leaks from the pump if the stove is stored with fuel in the tank.

Anyone know if the pump valve on this can be removed, repaired?

JGB
Syracuse, NY USA

You'll need a pump key. The valve itself is very straightforward with a small rubber disc acting as the seal. It dis-assembles quite easily.
I've found a bit of dirt preveting the valve from fully closing causing this kind of problem before now.

Someone on here has posted about making a pump tool if you can't get one.

Paul