Disassembly & Reassembly (Lancer)
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 Mitsubishi Outlander, 2003 Mitsubishi Montero Sport, 2003 Mitsubishi Montero, 2003 Mitsubishi Lancer, and 2003 Mitsubishi Galant. However, it is still accessible from the selected car via links, so may be relevant.
Remove cap and "O" ring. See Fig 1. Remove fuel pump harness. Remove fuel pump bracket and fuel pump cushion. Remove fuel pump and grommet.