New 40 hp EVINRUDE BIG TWIN WITH 2-YEAR WARRANTY Ita#39;s a smooth, tireless troller. A load lugger. Ita#39;s ruggedly built. Made to stay out of repair shops. ... In the new 1965 Big Twins, combustion chambers have been redesigned for more efficiency, more pep. lts aover squareaquot; engine has a. ... Electric or manual starting.