>> B << Fuel Main Pipe Connection

WARNING: This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.

Before the installation, push up the retainer of the fuel main pipe.

Fig 1: Pushing Up Retainer Of Fuel Main Pipe
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Connect the connector of fuel main pipe to the fuel pump module securely and push down the retainer of the connector to lock it firmly.
After the installation, slightly pull the fuel main pipe to check that it is connected securely. At this time, also check that there is approximately 1 mm (0.04 inch) play.

Fig 2: Pushing Down Retainer Of Fuel Main Pipe
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.