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This is the picture of the main needle. I actually have this. No i'm talking about the needle that the float operates. Some have three lobes and some have four. The needle that shuts off the float of gas from the bowl as the float goes up and down.
The 3 wing sometimes gets cocked and does not fully close off the fuel.
In This XLForum Thread there is a discussion of the float bowl overflowing and the possibility that it is caused by aftermarket float valves that are not of the proper design.10)
I think I remember something about how old the cv carb is, is what float needle to use, the older cv carbs had round style floats and newer is a square style and I think one used the three and the other the four
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