The provided context is insufficient to give a complete guide, but the video snippet emphasizes that when tightening a spark plug, it's crucial to make sure it's not too tight while also ensuring it is tight enough and correctly threaded.
Since the provided text is incomplete, I cannot offer a complete and accurate answer. This is particularly crucial for spark plugs because over-tightening or improper seating can cause significant engine damage. A detailed step-by-step instruction would require information on spark plug type, engine material, and specific torque specifications.