1973 Evinrude Outboard Models Where can I find my model number? 2 2302B 4 4306C 4336C 6 6302S 6303S 9.5 9322B 9323B 18 18304A 18305A 25 25302A 25303A 25352A 25353A 40 40304D 40305D 40354D 40355D 50 50302R 50303R 50372R 50373R 65 65372R 65373R 85 85393M 115 115393M 135 135383M