There are a number of threads and many posts about the various incarnations of their systems that may help, though it is a fair bit of reading.
I don't know if the specific info you need is in there, but it's worth a look if no one else replies with it here.
You'd need to see which type/year your motor is / match it with the appropriate thread/post info, while looking thru them, because info from one may not apply to the others.
All threads wtih bionx in the title
https://endless-sphere.com/forums/search.php?keywords=BionX&terms=all&author=&sc=1&sf=titleonly&sr=topics&sk=t&sd=d&st=0&ch=300&t=0&submit=Search
all posts with bionx in them (less useful but info in there thats not in the above threads)
https://endless-sphere.com/forums/search.php?keywords=BionX&terms=all&author=&sc=1&sf=all&sr=posts&sk=t&sd=d&st=0&ch=300&t=0&submit=Search
Theres more stuff out there under misspellings of bionx, most likely.