Subaru LEGACY 2006 Manual page 431

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B: INSTALLATION
1) Install the front oxygen (A/F) sensor and rear ox-
ygen sensor to the front exhaust pipe. <Ref. to
FU(H4SO)-32, INSTALLATION, Front Oxygen (A/
F) Sensor.> <Ref. to FU(H4SO)-34, INSTALLA-
TION, Rear Oxygen Sensor.>
2) Install the front exhaust pipe to center exhaust
pipe.
NOTE:
Use a new gasket.
Tightening torque:
40.8 N·m (4.2 kgf-m, 30.1 ft-lb)
3) Install the front and center exhaust pipe assem-
bly to the vehicle.
4) Temporarily tighten the nuts which hold front ex-
haust pipe to cylinder heads.
Front Exhaust Pipe
5) Tighten the bolt which holds the center exhaust
pipe to exhaust pipe.
NOTE:
Use a new gasket.
Tightening torque:
18 N·m (1.8 kgf-m, 13.0 ft-lb)
6) Tighten the bolt which holds center exhaust pipe
to hanger bracket.
Tightening torque:
35 N·m (3.6 kgf-m, 26.0 ft-lb)
EX-02124
7) Tighten the nuts which hold front exhaust pipe to
cylinder heads.
NOTE:
Use a new gasket.
EX-02122
Tightening torque:
30 N·m (3.1 kgf-m, 22.4 ft-lb)
8) Install the under cover.
9) Lower the vehicle.
EX(H4SO)-5
EXHAUST
EX-02121
EX-02123
EX-02122