Taking all the previous inputs, I get something like this:

Kiortz = Echo
Poulan = Craftsman (Sears) -saws
Fiji 50 = Mustang 50
Zenoah = RedMax = Komatsu-Zenoah
Kalt 22 = older original Zenoah G23
Ryobi 31 = Bolens
Ryobi 31 = Troy Built
Ryobi 31 = MTD
Ryobi 31 = LawnBoy
Ryobi 31 = Ryan
Ryobi 31 = Yardman
Ryobi 31 = Lawn Cheif
Ryobi 31 = Arnold
Ryobi 31 = IDC
Ryobi 31 = Toro (questionable)
Ryobi 31 = Sears (questionable)
Stihl = Stihl
35cc Webra Bully = Husqvarna Parts(82-86)
3w 35 = Husqvarna Parts(82-86)
fpe 3.2 = Husqvarna saw (Rancher 50)
fpe 2.4 = Husky 40 something

Efco = unkown
Tilton = unknown

Homelite = unknown
McCulloch= unknown

Hobby Engine Brands:



BME = Echo = Kiortz
Brisson = Makita = Sachs-Dolmar
Fox = Makita
Makita = Sachs-Dolmar
Poulan = Electrolux
Husky = Electrolux
Jonsered = Electrolux
Partner = Electrolux
Brisson 3.2 = Sach-Dolmar (saw) = Makita

Robin = Fuji (4 stroke-weedwacker)
Sears = Briggs & Stration (4 stroke-weedwacker)

If there are corrections/additions to the above, let me know, and I'll edit them into this post.