I Finally bought a Motor but can't seem to fimd out what it is and what fuel mix to use. <br /><br />It is a Sears 7.5 217-5949-0 under that it has 3d <br /><br />I was told it is aircooled ... isthis true? <br />is that bad <br /><br />what fuel should I be using? <br /><br />and does anyone know what year it was made <br /><br />Thaks