How do you change the belt on a 360 swivel Kenmore vacuum?

To change the belt on a 360 swivel Kenmore vacuum, first, unplug the vacuum for safety. Remove the bottom cover by unscrewing any screws or releasing clips, then take out the old belt from the motor shaft and brush roll. Position the new belt around the motor shaft and stretch it onto the brush roll. Finally, reattach the bottom cover and plug the vacuum back in to ensure it operates correctly.