Be sure the control knob is set directly on the Pilot position. When you depress the knob, if it doesn't go all the way in (Bottoms out), release the knob and turn it a hair one way or the other, until you reach the point that it will bottom out when you push it in. If that doesn't solve the problem remove the front cover to expose the pilot assembly and blow out the pilot with compressed canned air (like you clean a computer with) and blow out the pilot tip. Any other dust or lint you see, clean that out too. Reassemble the cover and try lighting the pilot again.
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Be sure the control knob is set directly on the Pilot position. When you depress the knob, if it doesn't go all the way in (Bottoms out), release the knob and turn it a hair one way or the other, until you reach the point that it will bottom out when you push it in. If that doesn't solve the problem remove the front cover to expose the pilot assembly and blow out the pilot with compressed canned air (like you clean a computer with) and blow out the pilot tip. Any other dust or lint you see, clean that out too. Reassemble the cover and try lighting the pilot again.