Hi, Terry.<br /><br />Welcome to iboats. <br /><br />I suspect that is a QD-19, Terry.<br /><br />That would be a 1958.<br /><br />Fuel mix is 24:1, 87 octane unleaded and TC-W3 outboard oil.<br />Spark plugs are Champion J4C gapped at .030.<br />Points are set at .020<br /><br />Aftermarket Manual here: http://www.boatmotors.com/manuals.html <br /><br />Reprints of OEM manual here: www.kencook.com<br /><br />Good luck.