NEW Starter Solenoid 4 Prong Fits Craftsman 145673 146154 Lawn MowerOne New Aftermarket Replacement Starter Solenoid for Craftsman, AYP, Husqvarna, and More Lawn Mowers This 4 prong (4 pole) double pole chassis ground starter solenoid serves as the key electrical switch in the starting circuit of riding mowers, zero turn mowers, and lawn tractors. When the ignition key is turned to Start, the solenoid closes the high current circuit between the battery and starter motor, cranking the engine. It mounts two ways and