Camshaft Part??? What is it?

[youngjames]

I'm working on a '67 CB77. This is the first engine I've ever taken apart. It seems like I do an hour of reading/research to 10 minutes of work in the garage. I have finally reached small impass. I got the camshaft out today. When I did I found that the piece that attaches to the piont cam and runs the advancer weights in the sprocket was broken. I imagine I broke it trying to get the cam locking bolt loose. I don't know what this part is called and cannot find it in any of my various manuals. If anyone knows the part number and where I might find another one, it would be a huge help. Is this part supposed to be somehow attached in the center of the sprocket. I'm worried I'm going to have to find a whole new sprocket for this bike. Any advice thoughts? I've attached some pics of the broken part. It's split right in half.
thanks!

[davomoto]

Yes, it goes in the center of the advance unit. You may have to source another one. What year, motor number is important, and there was a change in spline size, so two different advance uniys. I may have a spare to sell. PM me if you're interested.

davomoto