>>M<< Oil Seal Installation
WARNING: This page is about a different car, the 2012 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.
Using special tool, MD999601, drive the oil seal as deep as shown in illustration into place.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.