Place the generator outside where all the carbon monoxide fumes from the burning fuel will dissipate into the air instead of poisoning your home environment. Protect it from the weather in case of rain or snow, and keep it away from any flammable materials.
Fill the fuel tanks before starting your generator and keep a backup supply close by in case power isn't restored for a long time. Do a quick check of the oil level, adding more if necessary.
Start the generator and allow the engine to run for a few minutes before starting to use the power.
Plug the refrigerator into the "female" end of an exterior-grade extension cord. Run the cord outside to the generator and plug it into the plug receptacle of the generator.
Check the refrigerator by opening the door and seeing if the light comes on. You should also hear the hum of the condenser motor running quietly.