I've got an engine, all that is written on it is:<br /><br />Johnson SeaHorse (Outboard)<br />Model No.: 4BA77B<br />Serial No.: B 9022<br />RPM Range: 4000-5000<br />Gasoline/Oil ratio: 50/1<br /><br />I think it's from around 1980, and was used<br />with a very small boat.<br /><br />I'd like...
