Alldata sure has it. In Engine-Camshaft-Testing and inspection you'll find checking camshaft basic settings and checking camshaft timing. See pic.
Just remember, camshafts have to be in retarded position!

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I've clicked there and all other related sections. non of their procedures show you how to line marks up they state there are no marks. Their procedure shown also assumes your original chains are there and currently in time. I have purchased an M120 that is completely disassembled.