If your car has fuel injection (most do these days) find two open end wrenches* that are the right size for the fuel filter fittings. They will be two different sizes in most cases. With the wrenches in place, put a rag over the fitting to separate your head from the fuel lines. This will further protect your eyes in case there is some pressure in the lines.
Hold the wrench that fits on the actual filter, and turn the other wrench counter clockwise until the special bolt (part of what's called a "banjo fitting") comes out. Slide the fuel line off the bolt and set the bolt aside. Now do the same for the other side of the fuel filter.
*Some vehicles require a special fuel line wrench to disconnect the lines, check yours out before you start this job.
