DragBikeMike wrote on 04/12/23 at 11:47:26:Instead of struggling with that little screw and risk wrecking the carb, why don't you simply test it.
Remove the float bowl, hold the float up to seat the needle, turn on the gas and observe the joint in question. Keep the float held up for a couple of minutes to make absolutely sure that the needle valve doesn't leak and the o-ring around the seat doesn't leak. If you don't observe any fuel leaking, then those components are OK.
Sure would be a shame to trash the carb trying to remove that teeny weeny screw.
Have you checked the float to make sure it isn't full of gasoline? Sometimes the floats spring a leak and fill up with gas. That makes the float less buoyant and throws the float level way off.
good idea, i'll try that. As for a leaking float, I checked that when I rebuilt the carb. I put the float under water and there were no air bubbles escaping.
As for the seal, I do recall it being ok when I took the carb apart. Due to being unable to get the seat out I tested it with the needle and by blowing in the fuel intake. It sealed when I did that so it may be ok