Saturday afternoon (depending on what time) I was either in the museum, or working on saws at my house just down the street. My AS visitor brought the McCulloch outboard.
I was surprised to learn that McCulloch purchased Scott-Atwater in 1956 or so and produced outboards for at least 12-13 years. Like they were with chainsaws, McCulloch was quite innovative in the design and features of their outboard engines even if they did not work out all of the bugs along the way. I "borrowed" this from the Discount Marine web site. I have some literature on the diesel marine engines in the files, I guess I will have to put together a "McCulloch Marine" book now too.
"In 1956 Scott-Atwater was sold to the McCulloch Corporation. At this time McCulloch was well known for its Chain Saws and Kart Engines. The Scott-Atwater brand continued for a couple years and was shortened to Scott and later to Scott-McCulloch. In 1964 it was marketed as McCulloch.
In the coming years McCulloch would transform the old Scott-Atwater with many new innovations and would manufacture their outboard under many different brands.
McCulloch engineers were a head of the times. They were doing a lot of experimenting with different lower units and power heads. A special 14 hp. branded the "OX" was marketed with a heavy duty lower unit and was also available in a Diesel model. They introduce 100 to 1 oil (6 oz. to 6 Gal.) and surface gap (center fire) spark plugs. They manufactured the first 7 1/2 and 9 Hp. auto-electric motors with self-contained Nickel Cadmium batteries complete with cigarette lighter and dome lite.
As early as 1961 they had manufactured a 125 hp. outboard model number R120 with fuel and oil injection, variable pitch prop, turbo-charger, power trim & tilt and power steering. Only the lower unit turned for steering. These were running prototypes but, were never marketed. They also made some 3 cylinder Diesel power outboards but, these didn't work out.
In 1965 the McCulloch Corporation decided to exit the marine market and discontinue engine production. For the next few years they did continue to supply Sears Roebuck & Company from inventory to complete their contract in 1969."
McCulloch even sold complete packages matching their engines with boats to provide a one stop shopping experience.
Mark