The Rack Adjusting Wrench supports calibration activity on governor systems by applying controlled rotational input to internal adjusters that influence output limit and fuel ratio control. Through direct engagement with the adjusting interface, the wrench allows measured movement of the rack mechanism, enabling changes to the load stop position and fuel delivery response. This functional interaction allows calibration steps to be carried out incrementally, supporting alignment between rack movement and governor response. Attributes:• Enables rotational input to rack adjusters.• Supports controlled turning during adjustment activity.• Allows gradual change of rack position.Applications: The Rack Adjusting Wrench is used to calibrate governors by adjusting load stop position and fuel ratio control settings on type five and later model governors.