How do you replace mower belt on a john deere r72 riding lawn mower?

To replace the mower belt on a JOHN DEERe R72 riding lawn mower, first, ensure the mower is turned off and the ignition key is removed. Remove the mower deck by disengaging the lift lever and unhooking any retaining pins or bolts. Once the deck is off, locate the old belt, remove it from the pulleys, and install the new belt by threading it through the same path. Finally, reassemble the mower deck and ensure everything is securely fastened before testing the mower.