1. Remove the battery cover.
2. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [LF].)
3. Install the SST to the front HO2S.
4. Remove the front HO2S.
5. Install in the reverse order of removal.
Front HO2S tightening torque
29—49 N·m {3.0—4.9 kgf·m, 22—35 ft·lbf}