Good question re the device with the pulley dd. I still have no idea. I mistakenly thought is was an A/C compressor at first, but mainly because I can't think what else it could be. It might go some of the way to explaining why the previous owner had it. I know he didn't have electricity running to his workshop (he lived on a rural property) so it could be something to do with his machine shop equipment.

The motor has actually now been sold. Just locally through word of mouth in the end. Can I cancel the ad somehow? My first time advertising on the forum.

Cheers everyone.