Fuel Control Operation
All models are equipped with "feedback" carburetors with an electric mixture control (M/C) solenoid. The M/C solenoid operates single or dual metering rods in the float bowl. The metering rod system supplements fuel supplied by the idle and main systems in the carburetor. It varies air/fuel ratio within a pre-calibrated range. The M/C solenoid also controls air/fuel ratio through the use of an idle air bleed that operates in conjunction with the metering rod(s).