Have HVAC Questions? Ask an HVAC Expert for Answers
Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. If my initial response doesn’t answer your question then let me know and we can continue our conversation.
The orifice is in the gas burner. Are you comfortable taking the gas piping into the gas valve and the burner apart?
If you have no idea what you're doing and have no experience with this sort of thing then you shouldn't mess around with this. If you don't do things right the results could be catastrophic.