Typically two of these are needed

Kohler CH750-0026 Horizontal OHV Command PRO Engine

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

Toro Retianer Bushing HOC 108-9779

Replaces CH730-3205 and CH730-0002

Briggs & Stratton 84013572 Valve, Intake Brush Cutter Engine Typically two of these areOnly 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.