Ebay quick refurb.
The item description may of put some people/bidders off, because it had no electrics and the motor was described as "not working", but at least the original gearbox drive was still in, along with the original style rudder and "Z" drive uj coupling to the prop.
First job was to remove the motor, only to find it was a "Le mans " sport motor. The bearings were a little tight, but after removing the brushes, the commutator was badly oxidised, giving the reason why it would not power up. So I carefully cleaned it up with some fine abrhasive paper, I also cleaned the drive faces of the brushes before refitting. I also lubricated the motor bearings before going any further.
I put the motor in my vice, connected up a couple of power leads to a 6v battery, not wanting to go full voltage straight away and he presto, the motor sprang in to life!