If your gas burner is hissing, sputtering, or burning a yellow flame, it is not operating efficiently. The problem is caused by too much or too little air being supplied to the flame. Here is how to make an adjustment:

1) Wait to perform your repair until the stovetop surface is cool. Make sure all controls are turned off.

2) Take the grates off the surface of the stove, and then lift up the cooktop. Use the metal rod found inside to prop the cooktop open.

3) Locate the faulty burner’s air shutter. This is often near the front of the appliance. Unscrew the shutter’s setscrew, until it is loose but not off.

4) Turn the burner on high. If a noisy flame is your problem, slightly close the shutter until the flame burns quietly. If a yellow flame is your issue, open the shutter until the flame burns blue.

5) Retighten the shutter’s setscrew, close up the cooktop, and replace the grates.