Yep thats the one Grumpy!
Spent many afternoons pushing one of those around the yard as a kid! Heaps of torque they were hard to stall out even in high over grown tough grass. Finding any specific engine specs would be a task beyond me I'm afraid... That would be a tough one I think (any old dealers out there?)..
I read (1 of) your post links re: Teledyne engines and skimmed through the manual, the engine construction didn't match well, but I can see where they might of got the design from? Bit like Kirby tecumseh 2 strokes they made them here but the yanks dont have em...?
