FRONT OXYGEN (A/F) SENSOR
Fuel Injection (Fuel Systems)
14. Front Oxygen (A/F) Sensor
B: INSTALLATION
1) Before installing front oxygen (A/F) sensor, apply anti-seize compound only to threaded por­tion of front oxygen (A/F) sensor to make the next removal easier.
Anti-seize compound: SS-30 by JET LUBE
CAUTION:
Never apply anti-seize compound to protector
of front oxygen (A/F) sensor.
S155642
A: REMOVAL
S155642A18
1) Disconnect battery ground cable.
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2) Disconnect connector from front oxygen (A/F) sensor.
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2) Install front oxygen (A/F) sensor.
Tightening torque:
21 Nm (2.1 kgf-m, 15.2 ft-lb)
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3)   Lift-up the vehicle.
4)  Apply SUBARU CRC or its equivalent to threaded portion of front oxygen (A/F) sensor, and leave it for one minute or more.
SUBARU CRC (Part No. 004301003)
5)   Remove front oxygen (A/F) sensor.
CAUTION:
When removing the oxygen (A/F) sensor, wait until exhaust pipe cools, otherwise it will dam­age exhaust pipe.
3)   Lower the vehicle.
4)  Connect connector of front oxygen (A/F) sen­sor.
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FU(SOHC)-45