I am trying to take off this extension for my carb linkage and I can't see a way to get this off. I don't see a nut down the center of it.

Any thoughts?

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It may be attached to the butterfly. You may need to remove the entire shaft to get it out.

I got it...it was a weird nut of some type. Looked like a socket...was able to get a wide flat head screwdriver in there.

Now onto test fitting the bell crank linkage!

a big hammer