Your motor resembles this 1964 – McCulloch – Wizard – 3.5 hp. – Model MLM-6904B, I have in my picture files. As the info is missing from your ID tag, I would suspect your motor is one of the 3.6 hp. motors listed here on this chart from Discount Marine. You could likely determine the exact year by the colors of your motor if you can find someone that has one. That may be difficult.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.
