Initial Start Attempt and Fuel System Inspection

What happens here

The creator starts the tractor. It cranks but does not start. He then removes the air intake cover and sprays starting fluid into the air intake while attempting to start the engine. The engine sputters briefly but still does not run, confirming a persistent fuel delivery issue. He shows the fuel filter and injection pump system, pointing out the fuel flow indicators and suspecting air in the fuel lines or a clogged fuel filter/valve.

Goal: Confirm fuel delivery problem and inspect fuel system components.