Think about it. Can you do an engine runup without referring to the instructions? You probably already do the entire sequence without referring to the “check” list. You see, “Runup” on the paper, so you set the power, check the mags, cycle the carb heat or open the alternate air, cycle the prop and check the ammeter and vacuum meter. Then you look back at the paper and perhaps skip through the next seven or so items because you just did them without looking.

