Find a suitable size socket, that will accept the cork end while giving good support to the pull piece disc[not just the edge of it]. Set the piece you show[tap minus cork] in the socket, cork side down. Find a suitable drift, or make one say from a broken drill 7/64" or slightly smaller equivalent diameter. Use it to hammer the shaft visible in the center of the tap pull disc, until you have it free, place cork on in correct place on shaft and reassemble. Now with the cork end metal piece resting on a suitable metal surface use a pointed tool lightly hammered [small hammer] to swell the end of the shaft visible in the center of the disc. I find that a spring loaded center marker for metal work seems to do a quick job, after several applications.
Maybe I can explain in downunder language Turn the f.cker upside down. Put it in something so you can belt the center spindle out. Belt spindle out with nail, broken drill etc. Shove cork on. Put it back together and belt the end of spindle so it wont come out again. Coat with vaseline. Easy huh.
Thanks Hugz, its good a few of you down there are bilingual. There's a little "grist for the mill" Hope they are going to have translators at the Olympics, so we can understand what you Aussies are saying.
Phil I think the direct translation for you North Americans, I mean the continent not the country,
Bilingual in the context of Austrailians means "speaks with forked tongue".
Make it idiot proof and someone will make a better idiot.
Just forget the cork.
It will leak when it dries out.
I have the same fuel taps at my motorcycles.
Best way is to fit 4 or 5 suitable Viton O-rings.
They are fuel resistant and will slide over easily with some lubricant.
Good luck
I've just replaced a couple of corks - the first I soaked in water for an hour - went on sort-of ok(ish) with the help of some Vaseline .... but the tap is still a tad stiff.
The second I soaked overnight in warm water with a single drop of washing-up liquid added (to help wet the dry cork) - the difference is amazing. Cork became 'spongy' - went on a dream (with Vaseline, of course) - and tap easy to operate straight away. Gotta be the recommended method.