yeah you are right Joe the B&S 11hp has the 1" output shaft and the greenkeeper has a 7/8" shaft, but I have ordered a 2 1/2" OD by 7/8" ID V pully in a "B" size so that should be OK, it is a bit smaller than the original on the OD but with less HP should help, might just need to adjust the idler pully a bit for belt tension, dont know if I will have to worry about it too much anyway as a bloke I work with just dropped in for a beer and said he had a 8 1/2 hp briggs off a ride on he said I could have so I would recon the shafts would probably be the same size? he said the only problem with it is it starts to miss and fart after it has been running for an hour or so, so from that I recon the valve stem just wants a bit taken off it, or maybee a coil but normally a coil will show problems breaking down before an hour, but either way I have a few options now. And can change the transaxel pully to adjust the gearing if need be but for what it will be used for it probably wont worry me too much.
