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How to replace a refrigerator condenser fan
Unplug the refrigerator.
First remove the quarter-inch hex head screws, then remove the cover by tilting it at the bottom and disconnecting it from the upper lip. From the back of the refrigerator, the condenser fan motor can be found along the right side of the compressor.
You will see that the condenser fan's motor shaft has a small clasp nut on the end. Use a pair of slip-joint pliers to loosen it enough so that you can remove it with your finger.