It's not hard to find a parts diagram even if you resolutely refuse to buy one....
http://images.cmsnl.com/img/partslists/ ... 4_9aee.gif
I cannot understant why you wouldn't want one as I have manuals for Hondas that I don't even own....
Alternatively you could just rely on your  curiosity and mechanical ingenuity, take the cove off and have a look.
Probably  quicker than writing a post on this forum and wating for an answer.... :-)
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Latest Registry Entry
                        1965 Honda CP77 — Ulsan Metro City, Rep. Korea
                        Restored with original parts — Owner: J. Doe
                     
                     
                     
                     
                