Fuel filter disconnect trick.
I have seen a lot of posts regarding difficulty in disconnecting the fuel lines from the filter. This weekend I replaced my fuel filter and discovered an easy way to disconnect them. At least it works well on my 02.
If you look at the fitting on the fuel line you should find a tab or long button looking device on one side that is flush with the outer diameter of the fitting. Mine were either orange or green depending on which line it was. I found if I pressed in on this tab/button with my thumb nail, it would easily release the line fitting from the filter. You could use a screw driver also but I found it easier to wrap one hand around the fitting and use my thumb nail to push the tab/button in while holding the filter with the other hand to pull them apart.
I did use a tool to disconnect one of them but was having trouble getting the larger line to disconnect with the tool. I decided to try pushing in on that tab/button and it practically fell apart. I am glad I like to experiment because that job will be a lot easier now.
2002 FX4 Bright Red Supercab 4.0 SOHC, manual 5-spd & Tcase, 33" BFG MTs, K&N air filter, Modified air box inlet, Gibson SS cat. back exhaust, Bama flash, Hidden Hitch round receiver, Rear helper air springs, Electric trailer brake controller, Line-X bed liner, WAAG bar with KC lights and Wildernest shell.