Parts such as the Camshaft / Valve: Shim,tappet(2.50), Shim,tappet(3.450, Shim,tappet(2.40), Camshaft, In. are included in the Cb750f 750 Super Sport 1980 (a) Usa Camshaft / Valve parts fiche.
In this schematic the "Cotter,valve" is used most often.
The most reasonably priced component used on the Cb750f 750 Super Sport 1980 (a) Usa Camshaft / Valve is the Shim,tappet(3.00).