Subaru 2009 IMPREZA Service Manual page 332

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Center Exhaust Pipe

3. Center Exhaust Pipe

1) After removing the center and front exhaust

pipes as one unit, separate them. Refer to "Front

Exhaust Pipe" for the removal procedure. <Ref. to

EX(H4SO)-6, REMOVAL, Front Exhaust Pipe.>

2) Remove the front oxygen (A/F) sensor and rear

oxygen sensor. <Ref. to FU(H4SO)-41, REMOV-

AL, Front Oxygen (A/F) Sensor.> <Ref. to

FU(H4SO)-43, REMOVAL, Rear Oxygen Sensor.>

B: INSTALLATION

1) Install the front oxygen (A/F) sensor and rear ox-

ygen sensor. <Ref. to FU(H4SO)-41, INSTALLA-

TION, Front Oxygen (A/F) Sensor.> <Ref. to

FU(H4SO)-43, INSTALLATION, Rear Oxygen

2) Install the center exhaust pipe and front exhaust

pipe as one unit. Refer to "Front Exhaust Pipe" for

the installation procedure. <Ref. to EX(H4SO)-7,

INSTALLATION, Front Exhaust Pipe.>

C: INSPECTION

1) Check the connections and welds for exhaust

2) Make sure there are no holes or rusting.