Ferrari California Workshop Manual page 314

Disconnect the connector (3).
Prise off and remove the safety clip (4).
Fit the tool (AV 8176) on the fuel level sensor (A).
Using the tool (AV 8176), turn the fuel level
sensor (A) counterclockwise to bring the
retainer clips into the indicated position.
Whenever the fuel level sensor is removed,
ALWAYS REPLACE WITH A NEW
SENSOR, fitting a new O-ring.
Remove the fuel level sensor (A) and replace.
ALWAYS replace the O-ring (5).
Install the new fuel level sensor (A) carefully.