How do you change drive belt on toro 20013?

To change the drive belt on a Toro 20013 lawn mower, first, disconnect the spark plug wire for safety. Remove the mower deck by unscrewing the necessary bolts and detaching the belt covers. Next, take off the old drive belt from the pulleys and install the new belt, ensuring it is properly routed. Finally, reassemble the deck and reconnect the spark plug wire before testing the mower.