SOHC.co.uk Forums > CB750

Vacuum leak

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Pauarc:
Could this top seal be giving a vacuum leak as it’s damaged

Martin6:
Possibly. A good bit of investigating there.

There is another thin rubber type gasket inside the screw top, so possibly not affecting how it runs.

Pauarc:
A mate who used to work for a Honda bike shop in the 70s had some of the top grommets so carb are coming off to try them

cbxman:
Hi Pauarc,

Interesting.  I was wondering about air leaks here.  I don't see a part number for that other than a "Top Set", but the drawing is unclear.  Unlikely, but do have 4 spare parts for sale?

Cheers,

Jerry

Pauarc:
I’m going to see my friend I will see if he may have a part number l haven’t fitted them yet but he told me that they just prize and the new ones just push in

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