[blueflyer]

Does anyone have a picture they can post to help the poor souls (like me) who can't look at the parts manual and understand which is the 1) idle mixture screw and the 2) idle rpm screw.

I have an Marvel Schebler MA-4-5.

 

[flyer174]

The idle mixture screw is in the back of the carb,usually a knurled knob,good idea to safety if after adjustment so it doest back out,idle speed screw is on the same side as the throttle arm,it serves as an idle stop for the throttle linkage,usually has a spring on it so it wont back put on its own,hope this helps...,,

 

[Mel]

The idle mixture screw goes into the rear of the carburetor and has a large head.
The idle speed screw is the stop position for the throttle arm.

 

[blueflyer]

ohh, ok, got it. thanks for clearing that up for me. The parts manual was killing me. Much appreciated!