Originally Posted by earlwb
In looking at the pics of the engine, it cannot be run in reverse, unless you have a reverse rotation crankshaft made for it. I doubt OS will make one too, but you never know. The crankcase is a one piece design, so you cannot rotate the carb 90 degrees to set it up to run in reverse. Of course you'll have to retime the ignition for reverse rotation too.
Indeed. Some makes did have clockwise crankshafts. Like Webra. I used one of these on a Marutaka P-38 in the 70'ies. Like earl says, with an engine that has a detachable front one can rotate it to have clockwise running.