This is sold as a set that contains the screen and the cup

This starter drive kit is for new styles of electric starter motors for single and twin cylinder aluminum block engines

Toro Retianer Bushing HOC 108-9779

and is used to provide tension to the governor control lever and governor crank

Briggs & Stratton 84013572 Valve, Intake Brush Cutter Engine This is sold as aOnly Briggs & Stratton genuine parts are specially designed to exact OEM standards, Manufactured & tested to help deliver optimum performance in Briggs & Stratton engines. Not only are Briggs & Stratton genuine parts to fit, but using them ensures that the Briggs & Stratton engine they are installed on complies with applicable (EPA) emission regulations.