How do you replace a muffler on a craftsman zero turn 42 inch cut?

To replace the muffler on a Craftsman zero-turn mower with a 42-inch cut, first ensure the engine is off and cool. Disconnect the spark plug to prevent accidental starting. Remove any mounting bolts or clamps securing the old muffler, then detach it from the engine. Install the new muffler by securing it with the bolts or clamps, reconnect the spark plug, and check for proper alignment before starting the mower.