Kubota power 2182 gas, carb question

[Johnnyfly41]

Hello to all and thank you for your expert help to date.

Well, I seem to have my gas 2182 running again. flushed tank and new filter and lines. I have a new fuel pump and coil at the ready, but, it is staying running now.

Rotor and cap looked like new, no changes there.

Still suspect vent in cap, coil, module in distributor or fuel pump for the intermittent shut down I was seeing, but, for now it seems good.

I had the carb off and apart and thought I would take the jets out, verify they are clear. It seems to have a large jet, and, when you remove it, there is a much smaller pilot or idle jet up inside of the larger one.

I tried to back out the smaller jet, it turns, but, I never got it out. Now, I cant thread it back in tight either. ????

Symptom now is, at anything above a fast idle, the engine runs quite rich and erratically. It keeps running, but, is not right.

I dont understand the function of that electrical piece in the bottom of the float bowl, or, what I may have done trying to remove that inner small jet.

Before I tear it apart again, I would like to hear from the experts.

Thank you,

John