Step 1
Soak the burners in soapy water with an added tsp. of ammonia for half an hour. Then remove the burners and scrub off encrusted grime.
Step 2
Remove rust by scrubbing such rusty patches with a wire scouring pad. Rinse off the rusty scum and dry with a rag.
Step 3
Remove pitting in the iron surface by sanding the corroded area with a power hand sander. Also, remove existing enamel on the burner to achieve a uniform appearance. Use a rough-grit sandpaper to remove the pitting and enamel, and then a medium-grit sandpaper to restore the iron surface of the burners to a smooth appearance.
Step 4
Apply two to three coats of high-temperature stove paint to the iron burners. Allow each coat of paint to dry for several hours or as directed by the manufacturer before applying a new coat.