My M105x would run fine when you could get it to start but after you shut down for the day and came back the next day, it wouldn't start. The fuel shut off solenoid started clicking hard with the key in the on position. I replaced it and the new one wouldn't shut the tractor down. I then replaced that one and I got it started after some hard cranking and then the solenoid started smoking,the tractor shut off and now nothing turns on with the key turned to on. The wiring looks fine but I havent inspected all of it in the jacketing yet.