The 308080024 Throttle Shaft connects the throttle linkage and opens and closes the throttle shutter in the carburetor. 

The throttle shaft lever may need to be lightly sanded to align the butterfly where it meets the throttle stop. 

The Carburetor Throttle Shaft fits most Clone Carburetors including the Tillotson PK-1, Hyuai, Ruixing, and SP Carburetors on the Honda GX200, Ducar 196, Ducar/Tillotson 212E, Tillotson 196R/RS, Tillotson 212R, Ducar/Tillotson 212E, Predator 212, and BSP 196 and 212 Engines.

AKRA 2020 Rules for Throttle Shaft

Throttle Shaft .115" minimum thickness. Stop arm of the throttle shaft may be filed to adjust the butterfly position.

NKA 2020 Rules for Throttle Shaft

40.4.11.5: Throttle Shaft 

The throttle shaft is .115" minimum thickness; the material is non-tech.