I think the Duo Drive may have come later, Craig - a sort of facelift of the one my father had. I'm not sure, though - all I am sure about is that his didn't have a Duo Drive sign on it. I didn't like the mower much, because of the wheel gearing error and the engine was by no means a sweet runner. It may have been a JAP, I was a kid at the time and didn't pay that much attention. First times I ever operated a motor mower, if I recall correctly. Lots of stinking blue smoke (a 12:1 petrol oil ratio, as I recall), hard to start, etc., and if it had to work hard it whiskered the spark plug fairly often. If we hadn't been mowing kikuyu, I'd have preferred a push mower I think.
