Honda CB350 cam chain timing

Hello, I am rebuilding my '72 Honda CB350 engine and cannot find anything on cam chain timing when putting the engine back together. It seems there use to be a good post on here about it but it got removed. I have looked online and the shop manual and cannot find anything. If anyone could help point me in the direction of a resource that tells me how to do the cam chain timing i would greatly appreciate it. Thank you