![](http://www.airpointer.tech/wp-content/uploads/2019/02/rep_api_orifice-1024x322.jpg)
Procedure NOx A3 - Replacing the critical orifices, o-rings & capillaries
Parts you need: Critical orifice 4mil [800-360001], Critical orifice 10mil [800-360002]
Tools you need: 7/16″, 1/2″, and 9/16″ wrenches, tweezers
Procedure NOx A3 - Replacing the critical orifices, o-rings & capillaries