911 Turbo AWD F6-3600cc 3.6L SOHC Twin Turbo (1997)
4. Remove rear spoiler.
O2 Sensor
5. Detach oxygen sensor, e.g. using open-ended ring wrench 4681-2 by Hazet.
INSTALLATION
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Screw in oxygen sensor while turning cable at the same time.
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Tightening torque: 50 - 60 Nm (37 - 44 ft lb.)
NOTE: Other values for "Hazet special tool 4681-2": Tightening torque: 40 - 48 Nm (29 - 35 ft lb.)