Originally Posted by
ArchaicArcane
M is Malaysia, isn't it? G for Germany, J for St Jean Quebec, in Canada, K for Kilbowie Scotland, A for Anderson, South Carolina, USA,....
I think you'd be hard pressed to treadle a 431, there are no holes for the hinges to mount. You might be best off taking the motor from the 411 and put it in the 431 then treadle the 411.
That said, it's worth checking the motor brushes on the 431 before holding the funeral on it. So many technicians don't properly service or even check the motors.