Make sure the refrigerator door is closed tightly.
Inspect the top hinge cover of the door you want to adjust, whether the fridge or freezer, and locate the three screws that hold the cover in place.
Remove the three screws, using a Phillips screwdriver. Carefully pop the hinge cover off.
Loosen the hinge screws about halfway, which may cause the fridge door to sag more initially.
Grasp the refrigerator door handle and gently lift the door up or down until it is level and even with the refrigerator frame. Hold it in place or have a helper hold it level in place.
Tighten the hinge screws completely. Let go of the fridge handle to see if the door drops again. If it doesn't sag, open and close the door a few times to test the door's stability. If it still sags, repeat Steps 4 and 5 until the door no longer sags.
Replace the hinge cover and screws. Repeat these steps on the other door if needed.