SOHC.co.uk Forums > CB750

Petrol Tap

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adrian58:
Hi, I have a 1973 K2 and the petrol tap will not shut off properly when closed.I have fitted a new rubber seal (round thing with four holes) but it still keeps dripping. Anyone think/know of a fix ? ?  Thanks Adrian.

Bryanj:
Did you fit the correct fibre washers unde the heads of the two screws holding the tap on---If not petrol will always leak through to the carbs.

Generic fibre washers don't work as they are too thin and too big OD for the correct ID

keithK2:
I had the same problem, and eventually changed the fibre sealing washers underneath the two securing screws that hold the tap to the tank. These are tapped into the tank and can leak with age.
Good luck!

adrian58:
Thanks both for quick reply. I'm talking about petrol dripping from the spouts where you put the carb feed pipes on not from tap to tank joint. Is that where you had your leaks ?

steff750:

--- Quote ---I'm talking about petrol dripping from the spouts where you put the carb feed pipes on not from tap to tank joint.
--- End quote ---
;) yes that is your problem the petrol is getting past the screws and fibre washers the only place left is for it to go ,is for it to drip from the tap and through the tap bowl and the feed pipes ,and you will only know this is by removeing the petrol lines (as you have done)and in extreme cases, :o if not recified you can have fuel leak from the carbs into engine and thin out the engine oil.

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