Re: 1950 scot atwater
Hiya Rob,
My Dad bought one of those new back in the late 40's.... I've since determined that his was a Model 473. 7.5HP Deluxe Twin.
His had no bail-o-matic or gearshift...that came later. No external tank either...it was integral.
His had side cowl covers that were held on by two screws each...were a pain and a half to align the halves and get them bolted up...

I remember that!
I also remember that his motor would run the pants off of a friends Evinrude 7.5 of the same era.....the Scott was quite powerful.
I also remember that the carburetor had a little pin that stuck out of the top cover...connected to the float..... Dad had fashioned a tool out of a bent tea-spoon handle that he could work through the slot that the throttle lever slid through. The tool could push against that pin on the carb...."tickling" it a bit to stop occassional flooding.....
I remember that the re-coil starter needed shimming once in a while to prevent scraping on the flywheel once the engine was running....a bit of a nuisance...
Overall it was a very good running engine...and it would be about as old as me now (I was born in '49...) Once in a while it was hard to start....and I learned a few new words from Dad on those ocassions...
Wish I still had it. I remember Dad selling it to a couple of young guys in the mid-sixties.... I wonder where it is now.
Good luck with yours...Post a picture of if; will you?
Chuck