Back in 1982 (27 years ago!!!!!!!!!!!!!!!!!!) a Honda CB100N was my first road bike:
I did nearly 9000 miles on that little bike and I still have a soft spot for CB100Ns as a result. Good luck with the rebuild. I will drop my Haynes manual over for you take a gander at…yes I still have my original 1982 copy, did you lot expect anything else of me??