20v AFM adjustment !help!
Posted: Tue Dec 19, 2017 9:48 pm
So it’s the 20v afm. Previous owner seemed to have messed with it so I want to see if I could adjust it back to spec. I know there an idle air bypass screw and then the clock wheel inside the afm clockwise tightens the spring on the flapper for leaning and counter clockwise loosens spring for richening. But I feel like I’ll never get it back to spec. There’s like 250 different a/f mixture possibilities. This is like hitting the lotto.