I have a FD-20C 20 HP Johnson. Serial# J2705331. Can you tell me the year? Also, there is a spot next to the rich/lean knob that says "stop" and it appears something should plug in there. What is this? It also appears there is an electric start actuator under the hood. Is this possible? The problem I am having is no spark. Can anyone tell me how to figure this out without taking it to a mechanic?

