Main Fuse Removal/Installation

Disconnect the negative battery terminal. (Refer to NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Widen the main fuse cover in the direction of arrows (1) shown in the figure to detach tabs A of the main fuse cover from the main fuse, then lift up the main fuse cover in the direction of arrow (2).

Fig 1: Lifting Up Main Fuse Cover
Courtesy of MAZDA MOTORS CORP.
Press tab B of the main fuse cover in the direction of arrow (3) in the figure to detach tab B of the main fuse cover from the main fuse, then remove the main fuse cover in the direction of arrow (4).
Remove the nuts.

Fig 2: Identifying Main Fuse, Wiring Harness And Nuts With Torque Specification
Courtesy of MAZDA MOTORS CORP.
Remove the wiring harnesses.
Remove the main fuse.
Install in the reverse order of removal.