Unplug the washing machine and pull it away from the wall.
Unscrew the screws from the back of the machine to remove the back panel.
Push down on the belt adjustment lever to slacken the tension and remove the old belt. Some machines have an adjustment bolt instead of a lever. Loosen an adjustment bolt with a socket wrench.
Wrap the new belt first around the drum pulley, then around the motor pulley.
Make sure the belt is properly fitted into the pulley tracks, then push up on the adjustment lever or tighten the adjustment bolt to restore tension.
Reattach the back panel and plug in the machine.