Good day!

I am wanting to replace the fuel filter on my 1986 Ford F150 (EFI). The truck has a 5.0 litre 302 with dual gas tanks. Am I correct in assuming that the fuel filter is located in the black plastic cup on the underside of the 'dual function reservoir'?

If this is indeed the case, why does it say "DO NOT REMOVE CUP" on the reservoir bowl? Does this bowl (cup) unscrew from the upper valve assembly? I can't seem to budge it loose.

If this is not the fuel filter housing, then could someone tell me where it is located on this particular model/year?

Many thanks...