I bought a 1964 Larson last summer and it had this 1964 super sea horse on it that did not fire but i took mag of and took it to shop to have it fixed now got it back on boat retimed cleaning gas tank now but the evinrude/johnson outboard shop manual for 1.5 - 125 hp 1956-1972 does not have the spark plug gap in it for my outboard so if someone could post it on this form would be vary helpfull and thank you 