Lift the bottom one a little and pull toward yourself firmly. Should pop right out. Top one is prob held up with a simple catch or a screw. Get a flashlight and mirror to see better. Should come out pretty easily.
Take burner bowl(s) with you to the store to make sure you get the right ones. They are not standardized.
Take burner bowl(s) with you to the store to make sure you get the right ones. They are not standardized.