Turn the control knob to "pilot", while holding the knob down, press the piezoelectric spark button repeatedly until you see the pilot light through the observation glass. Once its lit, hold the button for approximately 30 secs. If it stays lit when you release the knob, turn to "on" Then operate normally. If the piezoelectric is not sparking, you can open the glass and light manually. Good luck and please rate my answer if it was helpful.