I have an 89 or 90 Yamaha Pro 50 which has been bullet proof until this year. I loved how this motor pushed my boat but earlier this year, it started
Your later explanation of the purchase puts a totally different light on the matter... apparently a honest seller and an advised buyer. Glad to hear that.
I have an 84 johnson 4 hp seahorse
I did some work on it and had a thread going here
not sure i will have to ask him.
That should be a big bore 175 with humpback exhaust. Check the cylinders really good as the sleeve are extremely thin and bad about turning and coming