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F2 carb flooding

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Read Replica:
Had the carbs off today for a clean. Noticed that brass overflow tube in #1  carb bowl is missing and hole where it should sit is filled with some sort of liquid metal type putty. This has I suppose been done in the past for a split tube or something.
The bike is a good runner but I have never been 100% happy with the carburation.
Does the tube also act as balance line as well as an overflow?
Question is, assuming float height is ok and fuel level is correct will the lack of this tube cause any running issues? Do I need a replacement bowl?

Thanks guys
Andy

Yoshi823:
I'd leave it as is...then if you happen to come across another set of carbs at some time in the future...or parts of...then replace. You'll soon know if the carb is overflowing anyway...

Read Replica:
The tube is purely an overflow, is that correct? Not essential to setting up the carburation.

Andy

SteveD CB500K0:
Yes. Purely an overflow.

They can crack, which leads to a constant leak - obviously your PO used a rather more radical fix!

Read Replica:
The more I look at this the more I suspect that the tube is not for an overflow at all. I say this because surely fuel will pour out of the airfilter via the slow running or main jets long before the fuel level gets to the top of the brass tube.

I can only assume therefor that it provides more of an equalising / balance function within the carb bowl and I will have to source a replacement.

Does anyone on here have a knackered set of carbs that they would sell or ideally just the #1 float bowl assuming the brass tube is intact.

Cheers guys
Andy

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