Second-Row Seat Back Component Removal/Installation

Slide the hook A shown in the figure to detach it from the hook B.

Courtesy of MAZDA MOTORS CORP.
Remove the second-row seat armrest. (See SECOND-ROW SEAT BACK TRIM REMOVAL/INSTALLATION .)
Remove the bolts, then remove the second-row seat back component.

Fig 1: Second-Row Seat Back Component Bolts With Torque Specification
Courtesy of MAZDA MOTORS CORP.
Install in the reverse order of removal.