i have a 1963 40 hp Johnson outboard model RK-25D sitting on a 1963 razorback ski boat. I have been wanting to rebuild the carbs and replace the impeller since i got it from my grandfather. The only problem i have is that i have searched the net looking for a shop/repair manual for the motor, and i have yet to find one. I did get the Clymer one and it is a little and i do mean little help. because it covers so many years. I need one that starts from the very first thing to the very last thing. I even got the one from Ken Cook but it was no help at all. Did not even cover my model. what i am asking is if someone can help me out with this. either step by step or has this manual and would mail me copies of what i need. Any help would be great. I would really love to have the factory shop/repair manual, but anything would be great help.