I use to get parts for a Viking G and for 5 StandardTwins in Ottertail & New York Mills, MN.
I should've flown up to Fargo ND in the late 1970's when I was In Chicago. It was called American Farm Machinery. They were walk behind and were all gear driven and had a pto.
Ted Mack had the parts back then and I don't think he's living now. He said he burnt 7 cords of wood each year. Hal