Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
Buy a new one, or don't put petrol in it.
For the 750F1 which uses a similar design of tap, albeit with a single outlet, Honda do a repair kit, which has a new nylon mesh cone and the large rubber washer that seals the joint between the tap and tank. The washer is sadly not available as a separate item, only in the kit, which is not particularly cheap.
Are you on commission from Sliver, Hairy