What was the outcome of this dilemma please?
My X 300 will run and start good. Other times it wont start at all and sometimes just quits while running. I have found out it is spark that goes. I cant seem to find a parts list or diagram to purchase the control unit under the dash or that small module thats mounted in the side of the engine that kills the other John Deere lawn tractor motors. Any help appreciated and tell me if I'm on the wrong track.
Sorry about the delay. Combination of a missing bolt in the starter worn deck pulleys and a spindle that was loose and the bearing in it going. None of the these problems was easily identifiable to an amateur like myself. The deck blades felt like they spun easily until you really moved them around. Pulleys seemed ok until I removed them and felt the drag on the bearings when spun in my hand. I thank you all very much for getting me to take a more in depth look!