This potentiometer converts the angular position of a control lever or pedal into a variable electrical signal for the tractor’s electronic control unit. It is mounted in the electrical system, typically on the operator’s console or the pedal linkage, where its output voltage tells the ECU the desired engine speed or hydraulic flow rate. A worn or intermittent potentiometer causes erratic throttle response, surging, or a no-start condition because the ECU receives an incorrect or open-circuit signal. The manufacturer’s original part matches the resistive track profile and connector pinout of the original assembly, so no wiring modification or calibration offset is needed during replacement.