Hi Gadge, it was keyed and he had it already off when he brought it over. I fitted a bigger pulley he bought, but I don't think it will make that much difference, he has headed off to try again.I took some pics of the motor but the flash reflected a bit much, there is little info on the motor apart from a bar code and these numbers
JTEKT JS- 00314 Z not sure if you can work anything out from that.