What is this outlet for?

Good morning all.

I have a set of carburetors for a 1979 KZ650SR. They are the slide-type carburetor bank with an accelerator pump on the #2 carburetor.

On this set of carburetors, I have three brass nozzles/fittings. Two I recognize as the outlets for the overflow tubes, but there is a third brass nozzle on one of the carburetor bodies. What is this for? An extra drain? Or is to be linked up with something? Or capped?

When i have the carburetors installed on the bike and all the fuel lines, etc. attached properly i can't figure out what purpose this nozzle serves.

Do a search for the fairly recent fuel line help topic in the Carburetor section. It has a photo of your carbs w the various ports labeled.

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cable/ dish network? got a picture? :laugh:

Really? The petcock vent line attaches to a carburetor? I thought it was routed to one of the four outlets on the intake boot.

I will try this setup tonight and see if I have success.

barquirt wrote:

Really? The petcock vent line attaches to a carburetor? I thought it was routed to one of the four outlets on the intake boot....

Actually, the petcock has a vacuum port - it's not a vent. It shouldn't matter whether you connect it to the carb vacuum port or carb-holder vac port. Whichever one isn't used should be capped. If the other carb holders have unused vacuum nipples, they should be capped as well.

Good Fortune!