How do you change the drive belt on a John Deere 260 lawn mower?

To change the drive belt on a JOHN DEERe 260 lawn mower, first, ensure the mower is turned off and disconnected from the power source. Remove the mower deck by detaching any necessary bolts and pins, then locate and remove the old drive belt from the pulleys. Install the new belt by routing it according to the diagram usually found on the mower or in the owner's manual, ensuring it fits snugly on all pulleys. Finally, reattach the mower deck and double-check the belt alignment before testing the mower.