Neptun (нептун-м) 20hp from 1972 - Soviet/Russian Made Outboard Motor

Thanks to my friends Garry M. and Bob B. who spotted this on craigslist, we have a second Soviet marque on our "back rack". This is a Neptun (not a spelling error!) and I believe it is 20hp. It came from the original owner who purchased it new in 1972 at a sporting goods store in Moscow! In 1976 he emigrated to the USA and brought the motor with him. It was used on several vacations to Maine but laid-up in 1979 and not run since.
As I mention in the video, collecting old outboard brings you into contact with some very interesting people. It was a genuine pleasure to meet the 80-year-old gentleman who sold the motor to me, hear about his life and the history of the motor. He is someone we can all look up to and someone who doesn't take the freedoms we have here in the USA for granted. He came to the USA from the Soviet Union with $9 in his pocket (and an outboard!) and subsequently made a good life for himself and his family. A true American success story!
Other than being a bit dirty, the motor appears to be in great shape and not a lot of hours on it. I'm just getting into it, alas no spark on one cylinder... ( Hopefully we can rectify it relatively easily - maybe dirty points or a bad condenser?)