Hello all, new to all this boating kinda stuff, more of a land lubber than anything else. Just recently inherited a boat from a deceased grand father. Right up front I know nothing about outboards, I had some experience some time ago pulling Homelite outboard engines and converting them to Three quarter midget race engines. But this Johnson is totally martian to me. My oldest son wants to ready it for fishing...so what should we be doing to this thing to make sure it is water worthy? It has been sitting for over 10 years. I am looking for any help I can get. Suggestions and your experience is greatly appreciated. Engine states it is a RDS 20 ser number 1802389.