Honda C90 head??

[SammyNiz-Nac]

Hello everyone got one for the tech masters

Ive got a 1980 honda c90 that needs abit of work after long time left in a shed. It has a ceasd engine and I am trying to pull the cylinder head off but this old girl was built with points ignition powered by an extention on the camshaft on the left side of the head. I know how to remove the contact points/backplate but the next part has got me stumped. From what I have learned, its called an automatic advance/retard unit and i got no idea on how to remove it.

Any help/advice would be really great, thanks guys and/or girls.
Samuel

 

[SammyNiz-Nac]

Does anyone know anything about this setup???

I have rebuilt china top ends before but this is new to me

 

[FDChappy]

Pull the big bolt in the center of the shaft and the advance will come right off.