Attached is the photo of my Tecumseh HM80 motor. This is from 1977 and was used by the previous owner to repower my MF8 tractor.
The serial number reads: HM80-EXE-16614 SER-7243X. I believe this was manufactured on the 243rd day of 1977.
It was suggested by someone that it may have been an experimental design.
Any Tecumseh experts know how to read this serial number and tie it to a series so that I can get the correct parts drawing?
Thank you for any help.