Locknut Installation Note

WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Tighten a new locknut.
Install a new locknut and indent as shown to crimp the locknut, using a chisel and hammer.

Fig 1: Installing Locknut And Indent
Courtesy of MAZDA MOTORS CORP.