Subaru Impreza 2002 Service Manual page 987

EXHAUST
9) Remove the front and center exhaust pipe as-
sembly from vehicle.
CAUTION:
• Be careful not to let the front and center ex-
haust pipe assembly fall off when removing as
it is quite heavy.
• After removing the front and center exhaust
pipe assembly, do not apply excessive pulling
force on the rear exhaust pipe.
10) Separate the front exhaust pipe from center ex-
haust pipe.
11) Remove the front oxygen (A/F) sensor and the
rear oxygen sensor. <Ref. to FU-47, REMOVAL,
Front Oxygen (A/F) Sensor.> and <Ref. to FU-49,
REMOVAL, Rear Oxygen Sensor.> .
B: INSTALLATION
1) Install the front oxygen (A/F) sensor and the rear
oxygen sensor. <Ref. to FU-47, INSTALLATION,
Front Oxygen (A/F) Sensor.> and <Ref. to FU-49,
INSTALLATION, Rear Oxygen Sensor.> .
2) Install the front exhaust pipe to center exhaust
pipe.
NOTE:
Replace the gaskets with new ones.
Tightening torque:
30 N·m (3.1 kgf-m, 22.4 ft-lb)
3) Install the front and center exhaust pipe assem-
bly to vehicle.
FRONT EXHAUST PIPE
4) Temporarily tighten the bolt which installs front
and center exhaust pipe assembly to hanger brack-
et.
5) Tighten the nuts which hold front exhaust pipe
onto cylinder heads.
Tightening torque:
30 N·m (3.1 kgf-m, 22.4 ft-lb)
S2M0923
6) Install the under cover.
7) Tighten the bolts which install front and center
exhaust pipe assembly to rear exhaust pipe.
Tightening torque:
18 N·m (1.8 kgf-m, 13.0 ft-lb)
S2M0923
EX-8
B2M3111
B2M3200
B2M3109