Kenmore 16657 - 3 Burner Grill Use And Care Manual page 21

Install heat diffusers by sliding one end of each heat diffuser into slots at front of firebox and resting opposite end on pins in
back of firebox.
Heat diffuser
Place cooking grates onto the firebox as shown. Insert the two wire ends at rear of warming rack into holes in back of
firebox. Front wires of warming rack rest on sides of firebox.
Assembled
warming rack
Cooking grate
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