Fuel gauge sender unit (sub)

Perform the "Fuel Line Safety Procedure" referring to the "BEFORE SERVICE PRECAUTION". (See BEFORE SERVICE PRECAUTION .)
If the fuel gauge level indicates 3/4 or more, refer to the "FUEL DRAINING PROCEDURE" and drain the fuel. (See FUEL DRAINING PROCEDURE .)
Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
Remove the rear seat cushion. (See REAR SEAT CUSHION REMOVAL/INSTALLATION .)
Remove the screws.

Fig 1: Removing Service Hole Cover Screws
Courtesy of MAZDA MOTORS CORP.
Remove the service hole cover.
Disconnect the connector.

Fig 2: Disconnecting Connector
Courtesy of MAZDA MOTORS CORP.
CAUTION:
- The fuel gauge sender unit cap could be damaged if the SST (wrench) is used with any gap between the cap and the SST (wrench). Securely attach the SST (wrench) so that there is no gap between the SST (wrench) tabs and the side of the cap.
Remove the fuel gauge sender unit cap using the SST (wrench). (See Fuel gauge sender unit cap removal note )

Fig 3: Removing Fuel Gauge Sender Unit Cap Using SST (Wrench)
Courtesy of MAZDA MOTORS CORP.
Lift the set plate up and disconnect the quick release connector at the position shown in the figure.

Fig 4: Disconnecting Quick Release Connector
Courtesy of MAZDA MOTORS CORP.
Remove the set plate.

Fig 5: Installing Set Plate
Courtesy of MAZDA MOTORS CORP.
Remove the packing.
While pressing the fuel gauge sender unit (sub) tab in the direction of the arrow (1) shown in the figure, remove the fuel gauge sender unit (sub) in the direction of the arrow (2).

Fig 6: Pressing Fuel Gauge Sender Unit (SUB) Tab
Courtesy of MAZDA MOTORS CORP.
Install in the reverse order of removal.
Perform the fuel leakage inspection referring to "AFTER SERVICE PRECAUTION". (See AFTER SERVICE PRECAUTION .)