Does anyone know if you can "unscrew" the Idle air screw and completely remove out of the carb with it being still on the engine? I would like to replace the 2 Orings but don't want to remove the carb or rebuild the carb.

I do feel some resistance so I want to be sure before I force anything. thanks

I think you can. Make sure you have the correct o-rings on hand because I don’t believe are readily available in general o-ring kits.

Thanks. That's a good point. I was thinking they would be pretty standard. Any thoughts on where to get? I would rather not buy an entire rebuild kit for 2 o rings............

Yup, comes right out.

Pretty sure they're in "some" O-ring kits... seems as though all of those aren't created equal. Take the old ones and match em.

Great. Thanks everyone!