Carrier EverFRESH Operation, Service And Parts Manual page 41

Use a straight edge to check that it is flush with the top of the cylinder.
4. Lay the head upside down on a bench. Take the gasket with the material in the middle and place it on the
head lettering up and align with the separation in the head and indicator hole.
5. Take the outlet valve plate with the line down the center and align with the indicator hole.
5–9 T-374