Re: Re: 1949 Johnson HD-25 Overhaul: A beginners perspective and guide for the compleat idiot

[legendre]

This is the high-speed mixture needle we’re discussing – it +must+ be free to turn, else you can’t adjust the mixture. It sounds like yours is stuck in place.. might be due to gummy fuel residue or some sort of dissimilar metal corrosion.

Try a little heat on that part of the carb body, see if you can get it moving.