The oil alarm is going off so I unplugged the wires to see if alarm would turn off and only wire that shut alarm off was the purple wire running from vertical box to a big bunch of wires below starter so I took the oil pump apart to check for plastic everything looks good no plastic I dropped the little plastic ball that is in a plastic peice that slides over the shaft and hooks into the pump can this peice be replaced without buying everthing and where do I go from here to see why my alarm wont shut off while running.