I just got a 1975 Johnson 4HP Seahorse, and I bought a manual on Ebay however, the manual is for model number 4R75; mine is 4R75A, is there anything special about the ?A? part or the Seahorse?
How very silly of you! Going out and getting a factory OEM manual, geesh, now you wont be able to waste all your hard earned money on wasted parts that you do not need and spend countless hours troubleshooting unneccesarily. And spending like 30 bucks, are you crazy!
Just kidding my friend, great idea and great buy, will be the best money you ever spent. Good luck.
