Topic: Carb Part Question

[wedoo2]

I know that this is not a 4 cylinder Honda but it seems the Honda Twin site is unavailable.  I have a 72 CB350 with Keihin 722A carburetors and it seems that there is a missing part under the top lid.  I have two pictures.

The first is a picture of the part that is missing.



This is a picture of the underside of the top lid with the part installed on the other carb.



I believe that the bike was running without the thing, but not sure of its function.  Anyone help?

[FuZZie]

shouldn't that have some kind a diaphragm?

[Scott S]

 HondaTwins? It works for me:

http://www.hondatwins.net/forums/82-general-discussion

[FuZZie]

This is a Keihin-722A-Carburetor pic off fleabay

[Scott S]

 I am no expert on the 350 twins, but I have done a couple or three. I don't remember seeing anything like that in the carb tops and I don't see what purpose it would serve. Interested to see what you find out.

[wedoo2]

In the picture it looks as though my little piece is missing on that one too.

Oh, I was able to get on the twins site.