What Is The Easiest Way To Change The Cutting Blades On A Troy Bilt
Super Bronco Lawn Tractor?

First disconnect the spark plug or remove the battery. If you know how to safely support the unit on ramps or something suitable to get the unit up. Use a block of wood between the blade and deck to hold the blade and use a breaker bar and socket to remove the blade nut.
Or you can just remove the deck, and will not have to worry about the unit falling.