July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Retainer ring removal note

WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Remove the retainer ring by tapping a retainer ring projection using a flathead screwdriver as shown in the figure.

Fig 1: Removing Retainer Ring
Courtesy of MAZDA MOTORS CORP.