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Broke acorn nut

Posted: Sat Jun 08, 2013 9:02 pm
by JakeS
First I wanted to say, this forum is excellent, I've learned a great deal here in the last week. So I bought a '97 XJ600 as my first bike last month, and today I decided it would be good idea to clean the carbs. Replaced the float bowl gasket and needle, o-rings etc. as well. However, when I was putting it back together, I got a little frisky with the acorn nut that I believe is below the needle jet. The top of the nut broke off and left the rest of the threads inside.

Normal acorn nut:

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Head broken off:

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Do I have to get the threaded stem part out and order a new nut? Or can I just leave it in there? I don't know if the threads themselves can maintain a seal or not, or what the nut itself even does honestly.