Sorry, forgot to mention, it's a 10-horse Kohler.
Nice thing about the "O"s is that they've got a reduction at the belt drive, and a reduction gear at the transaxle. That means a little bit of power goes a LONG way. But, they're SLOOOOOWWWWW.
My other "O" has a larger pulley on the engine crankshaft that speeds up the little bugger quite well, but it's more for show than pulling. Plus, it's only a 7hp.
Compare the upper pulley on this one to a standard "O" and you can see the difference. Someone made this out of billet aluminum. Haven't seen another one since.
