I recently bought a Johnson / Seahorse 9.9 hp motor ( model #10R75C / serial # E4178758). I know that the motor is a '75 year model. Here is what the motor WILL do: Start with ease (four or five pulls), Idel, shift ok. What it WILL NOT do is rev up. When I start the motor and shift it the...
Last week I bought a Johnson 9.9 hp motor, model # 10R75C / serial # E4178758. I asked the forum the basic questions on age of the motor and oil/gas mixtures, to which Boatist replied with the necessary info. To that extent I followed Boatists recomendations and the motor started on the third...
Hello to all of you outboard motor gurus! I just bought an older Johnson 9.9, model # 10R75C, and I think it was produced in 1975. I have a couple of questions: Was this motor produced in 75? What is the proper oil/gas mixture? I have found manuals for model # 10R75 will this book cover my...
