I am trying to identify the pony motor on my D8 1H. It is not original to the machine. I put it on about 20 years ago but have since lost the information on it. There are stampings on the side of 4B8840 and A UARC.  If there is a serial number where would that be?

I am also trying to locate another electric starter motor housing. the flanges on mine have broken off, and the gear teeth are so wore down they won't catch any longer. This is another item my dad located in a yard 30 plus years ago and is not original to my D8. the stamping number on the housing is 6B9158.

Any assistance is greatly appreciated, including if anyone knows of a yard where they might still have starter housings available. Thanks!