Mumbles, retiredoz, can’t say I ever seen service manuals go back that far in Evinrude. The book I have, that I just looked at again, the powerhead overhaul starts with, to me looks like a early 50’s Evinrude, with outside shift lever F-N-R on starboard side, looks to me like a 3 hp, but must be a 5 1/2 hp. Did they make a shift lever on the 3 hp, or did it start with the 5.5hp?. The spec sheets start at 1936-up only. Which brings me to another Question. Do the older manuals start with Overhaul and Repair service on the original motors they built back then?. Those service manuals are definitely a plus when you run across any of those old devils. Gene.