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[[File:kozyworldgw208_01.png]]<BR>''Illustration: This may be the most common cause of a pilot that burns for a few minutes then goes out. Even partial blockage of the Pilot Air Inlet Hole will result in an unreliable pilot. When the pilot goes out, even when the main burner is still going, the thermal coupler safety will cut the gas supply to the main burner. Keep the entire pilot assembly clean for reliable performance.''