How do you set 4HF1 injection pump timing?

To set the timing for a 4HF1 injection pump, first ensure that the engine is at TDC (Top Dead Center) of the compression stroke for cylinder one. Next, remove the injection pump's timing cover and align the timing mark on the pump with the corresponding mark on the engine. Adjust the pump’s position as necessary to achieve the correct alignment, and then securely fasten the pump. Finally, double-check the timing before reassembling any components.