Thank you everyone for your follow-up comments and suggestions..I'm glad I found this Forum!!
FWIW, the photo attached to my original post by CyberJack (thank you!) is an interesting one as it looks like the B&S has been turned 90 degrees clockwise from its original position...
The two-and-a-half examples of this mower that I have here at the moment (and the two that I ran in the business all those decades ago) all have (and had) the carby on the same side as the lefthand wheels..viewed from the rear (handle) position..
When the dust settles on this little current problem, I'll start talking about the 'custom' drive mechanism that was offered in Adelaide by (then one) Kingsley White, who came up with an interesting concept of positive individual belt drives to each rear wheel, after they had been fitted with pneumatic tyres. I used to run that rig in the mowing round in the late 70s and recently managed to find an example here in Adelaide that had been fitted to (I believe) an aftermarket copy of the original 21" rover chassis with extra reinforcing in the casting. This one has a Honda motor on it and will be gradually restored as time permits, as it is a stunning machine to drive, and overcomes all the problems of the original Rover set-up.
Thanks again for being such a great place to be able to ramble on about this stuff !!
