Replacement of defrost heater

When replacement of the defrost timer I noticed the heater was hanging down and not making good contact the evaporater coils. I also noticed that the condition of the heater was getting old and I didn't want to let the food I had in the refrigerator to go bad, if the heater stopped working. That would be very costly if you had to throw away all that food.
First of all unplug the refrigerator. You should never work on equipment with the power connected. After removing the shelves and baskets in the freezer section, it took only a nut driver to remove the cover for the evaporator coils. and unscrew the right side of coil to remove the heater. Be very careful not to break any of the refrigerant lines to the coil. Pull the spring clip on the bottom of the coil off that holds the heater to the assembly. Unplug the heater assembly and replace with the new one. You can only get the harness plug one way. reassemble all of the covers, shelves and baskets. Plug back into the power and enjoy the next 10 years of your refrigerator.