Its not necessary to pull the fridge just open the port to the burner, last looked one screw holding box cover, put a paper towel over burner ports and lightly tap the burner tube, be careful of eyes because rust will be falling down your burner tube.
I do this every spring and fridge has worked perfectly for last 6 years.
Course everything is turned off while doing this. Just be careful up on left side 1/2 way up is your electric element and while there check the clip connection are clean and tight.
Had a problem last summer, element would open surge protector when hooking up to pedestal found the leads crossed from vibration.