Couldn't find the air screw on 83 KX125 Mikuni Carb

[thunderkiller]

I couldn't find any air adjustment screw/hole on my 83 KX125 Mikuni Carburetor.

My other bike has both air & idle adjustment screws on it's Mikuni.

Does anybody know this Mikuni model w/o air adjustment screw, if yes how can I adjust the air for jetting?

Thanks in advance

 

[jdon88]

My '85 KX125 with Mikuni doesn't have air/fuel screw either.

 

[chillywilly]

On a kind of related topic, my 85 rm125 doesn't have one either.