Feedback Control Solenoid: Description and Operation

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This motor is an integral part of the BBD carburetor and controls the metering pins that vary the side of the idle and main air bleed orifices located in the carburetor body. The motor moves the pins in and out of the orifices in steps according to the control voltage generated by the MCU. The motor has a range of 100 steps, but the normal operating range is 40 to 60 steps.