Hi, just bought a 1971, 7hp Sea king outboard, cleaned it up some but have some questions before I try to start it. Does anyone know what fuel mix, spark plug & gap, what sort of lubricant for the lower unit and if this is an air or water cooled motor? Also, the carburaetor doesn't have a cover over it though there are threaded holes on either side, but not much room for much of a cover or filter. Thanks in advance for any help you can give!