I do. I primarily work on motors within the OMC umbrella because of parts interchangeability, often for decades. I’m not sure about Scott Atwater, I’ve only owned one of those and it was not running.
You can still get OMC parts back to the early 50s pretty easily. Older than that, it gets a little bit tougher.
Outboards are pretty easy to work on. The carbs are very simple and very forgiving. Also usually have a decent amount of room for fat fingers unlike a saw that is put together in close quarters.
The one thing with outboards is very few ever die due to being “worn out” or ran hard. Usually they fail due to bad gas and often are running again with a carb kit or a carb swap. Other than that, a lot of lower unit issues from people hitting things.
You can often get 60 to 70-year-old motors and they fire right up as long as they were stored without gas. Then of course you get the occasional problem child with multiple issues. But going back to other comment about collecting within families makes it a lot easier to fix things because once you have a few parts motors, you can fix almost anything on them.
When you get into the mid 50’s and older motors that have the old pressurized “two line” fuel system were often mothballed in the 70s and 80s due to the tank or lines failing. Most of these can be easily converted to the more reliable modern single line system. If you have a newer parts motor that can donate the fuel pump and the impulse system.
Sorry, I know that’s a lot of information but yes, they’re pretty easy to work on.