Ok I have Cub cadet 1440 with a B&S 294447-0445-01. I needed to change the head gaskets on this mower and reset the valve clearance to spec. Now when I turn the key the motor only turns a quarter turn and stops. If I turn the key again it will still only turn a 1/4 turn and stops. I needed a new battery because the old one under a test load was showing very weak so I got a new battery. The starter seemed weak with the new battery so I tested it and it would only start on occasion. So I replaced the starter. I also have a new solenoid and its still doing it. I thought maybe I set the valve clearance to tight so I loosened them and still the same thing. What am I missing that could cause this