I have a Magnum .91 4 stroke that is giving me fits,i can't get to idle down very low, if i try it will die.
I do not have a tach so i can't say what the RPM is at idle but the plane will start to roll from a stop at idle.
I started to mess with the mixture screw inside the throttle arm and now it starts to backfire and throw the spinner.(when starting)
I get very good transition from idle to full throttle.
Also at idle it is running very rough.
I have a 13X8 prop on it.
What could be my problem?
Does anyone know how many times from all the way in i would turn out the mixture screw on this engine?
Any help is appreciated!