How do you replace mower deck belt simplicity mower?

To replace the mower deck belt on a Simplicity mower, first, ensure the engine is off and disconnect the spark plug for safety. Remove the mower deck by detaching the pins or brackets holding it in place. Once the deck is removed, locate the old belt and note its routing before removing it. Install the new belt by threading it through the same path, then reattach the mower deck and reconnect the spark plug.