My name is David, new to boating. Don't know much about motors, but bought an 18 year old Maxum with a 75 HP outboard. At slow speed and even medium speed, no problem at all. At full throttle, about 5 minutes in, the motor shuts down. Some think it's overheating somewhere, but not sure. Some suggest ignition module. No one knows for sure. Wouldn't it overheat even at slower speeds? Could use a little help if anyone know what this might be. Thanks, David
