Unplug the power cord from the electrical outlet.
Remove the screws on the top of the rear panel. Lift the rear panel up and away from the dryer to remove it.
Press in on the locking tabs on the back of the control console. Pull the bottom of the console out and unhook the top latches. Set the console aside.
Unplug the connector leading into the door switch. Open the dryer door. Pull out the lint filter. Remove the two screws next to the lint filter compartment.
Remove the two screws along the bottom of the toe panel in the front of the Whirlpool Duet dryer. Remove the two screws along the top of the front panel. Lift the front panel off of the dryer.
Slide the old belt off of the drum and pulleys. Insert the new belt around the drum and pulleys.
Replace the front panel. Install the two screws on the top of the panel. Replace the two screws along the bottom of the toe panel.
Replace the screws next to the lint filter. Plug the electrical connector in the door switch. Replace the control console. Press on the front of the console to engage the locking tabs.
Replace the rear panel. Install the screws along the top of the rear panel.