How do adjust the valves on a Kubota diesel?

To adjust the valves on a Kubota diesel engine, first ensure the engine is cold and then remove the valve cover. Rotate the engine to the TDC (top dead center) of the compression stroke for the cylinder you’re adjusting, and use a feeler gauge to measure the gap between the rocker arm and valve stem. Adjust the clearance by loosening the lock nut and turning the adjusting screw until the desired gap is achieved, then re-tighten the lock nut. Repeat for each cylinder as needed, ensuring all adjustments are done according to the specific engine model's specifications.