Page 817 of 2870
FU(H4SO)-35
FUEL INJECTION (FUEL SYSTEM)
Fuel Injector
13.Fuel Injector
A: REMOVAL
1. RH SIDE
1) Release the fuel pressure.
PRESSURE, OPERATION, Fuel.>
2) Open the fuel flap lid, and remove the fuel filler
cap.
3) Disconnect the ground cable from battery.
4) Remove the resonator chamber.
IN(H4SO)-8, REMOVAL, Resonator Chamber.>
5) Remove the spark plug cords from the spark
plugs (#1 and #3 cylinders).6) Remove the power steering pump and reservoir
tank from the brackets.
(1) Remove the front side V-belt.
ME(H4SO)-43, REMOVAL, V-belt.>
(2) Remove the bolts which hold the power
steering pipes onto the intake manifold protec-
tor.
(3) Remove the bolts which install the power
steering pump to the bracket.
(4) Disconnect the connector from the power
steering pump switch.
FU-00009
FU-00302
FU-00255
FU-00139
FU-00017
Page 818 of 2870
FU(H4SO)-36
FUEL INJECTION (FUEL SYSTEM)
Fuel Injector
(5) Remove the power steering tank from the
bracket by pulling it upwards.
(6) Place the power steering pump and reser-
voir tank on the right side wheel apron.
7) Remove the fuel pipe protector RH.
8) Disconnect the connector from fuel injector.9) Remove the bolts which holds the fuel injector
pipe to the intake manifold.
10) Remove the fuel injector from the intake mani-
fold.
(1) Remove the fuel injector securing clip.
(2) Remove the fuel injector while lifting up the
fuel injector pipe.
FU-00020
FU-00021
FU-00267
FU-00303
FU-00284
FU-00304
FU-00305
FU-00306
Page 819 of 2870
FU(H4SO)-37
FUEL INJECTION (FUEL SYSTEM)
Fuel Injector
2. LH SIDE
1) Release the fuel pressure.
47, RELEASING OF FUEL PRESSURE, OPERA-
TION, Fuel.>
2) Open the fuel flap lid, and remove the fuel filler
cap.
3) Disconnect the ground cable from battery.
4) Remove the two bolts which install the washer
tank on the body.
5) Disconnect the connector from the front window
washer motor.
6) Disconnect the connector from the rear gate
glass washer motor.
7) Disconnect the rear window glass washer hose
from the washer motor, then plug the connection
with a suitable cap.8) Move the washer tank, and secure it away from
the working area.
9) Remove the spark plug cords from the spark
plugs (#2 and #4 cylinders).
10) Remove the fuel pipe protector LH.
11) Disconnect the connector from the fuel injector.
FU-00009
FU-00190
FU-00191
FU-00192
FU-00307
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Page 820 of 2870
FU(H4SO)-38
FUEL INJECTION (FUEL SYSTEM)
Fuel Injector
12) Remove the bolt which holds the injector pipe
to the intake manifold.
13) Remove the bolt which holds the fuel pipe on
the left side intake manifold.
14) Remove the fuel injector from the intake mani-
fold.
(1) Remove the fuel injector securing clip.
(2) Remove the fuel injector while lifting up the
fuel injector pipe.B: INSTALLATION
1. RH SIDE
Install in the reverse order of removal.
NOTE:
Replace O-rings with new ones.
Tightening torque:
5 N
⋅m (0.5 kgf-m, 3.7 ft-lb)
Tightening torque:
19 N
⋅m (1.9 kgf-m, 13.7 ft-lb)
FU-00309
FU-00170
FU-00312
FU-00313
(A) O-ring
(B) Fuel injector
FU-02097
(A)
(A)(B)
FU-00314
FU-00284
Page 821 of 2870
FU(H4SO)-39
FUEL INJECTION (FUEL SYSTEM)
Fuel Injector
Tightening torque:
19 N
⋅m (1.9 kgf-m, 13.7 ft-lb)
Tightening torque:
33 N
⋅m (3.4 kgf-m, 24.3 ft-lb)
2. LH SIDE
Install in the reverse order of removal.
CAUTION:
Replace O-rings with new ones.Tightening torque:
5 N
⋅m (0.5 kgf-m, 3.7 ft-lb)
Tightening torque:
19 N
⋅m (1.9 kgf-m, 13.7 ft-lb)
Tightening torque:
19 N
⋅m (1.9 kgf-m, 13.7 ft-lb)
(A) O-ring
(B) Fuel injector
FU-00267
IN-00044
FU-02097
(A)
(A)(B)
FU-00170
FU-00309
FU-00266
Page 822 of 2870

FU(H4SO)-40
FUEL INJECTION (FUEL SYSTEM)
Front Oxygen (A/F) Sensor
14.Front Oxygen (A/F) Sensor
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Disconnect the connector from engine hanger,
and then disconnect the connector from front oxy-
gen (A/F) sensor.
3) Lift-up the vehicle.
4) Apply SUBARU CRC or its equivalent to the
threaded portion of front oxygen (A/F) sensor, and
leave it for one minute or more.
SUBARU CRC (Part No. 004301003)
5) Remove the front oxygen (A/F) sensor.
CAUTION:
When removing the oxygen (A/F) sensor, wait
until exhaust pipe cools, otherwise it will dam-
age exhaust pipe.
B: INSTALLATION
1) Before installing front oxygen (A/F) sensor, ap-
ply the anti-seize compound only to the threaded
portion of front oxygen (A/F) sensor to make the
next removal easier.
Anti-seize compound:
SS-30 JET LUBE
CAUTION:
Never apply anti-seize compound to protector
of front oxygen (A/F) sensor.
2) Install the front oxygen (A/F) sensor.
Tightening torque:
21 N
⋅m (2.1 kgf-m, 15.2 ft-lb)
3) Lower the vehicle.
4) Connect the connector to front oxygen (A/F)
sensor, and then connect the connector to engine
hanger.
FU-00009
EX-00029
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FU-00196
FU-00195
EX-00029
Page 823 of 2870
FU(H4SO)-41
FUEL INJECTION (FUEL SYSTEM)
Front Oxygen (A/F) Sensor
5) Connect the battery ground cable to battery.
FU-00009
Page 824 of 2870

FU(H4SO)-42
FUEL INJECTION (FUEL SYSTEM)
Rear Oxygen Sensor
15.Rear Oxygen Sensor
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Lift-up the vehicle.
3) Disconnect the connector from the rear oxygen
sensor.
4) Apply SUBARU CRC or its equivalent to the
threaded portion of rear oxygen sensor, and leave
it for one minute or more.
SUBARU CRC (Part No. 004301003)
5) Remove the rear oxygen sensor.
CAUTION:
When removing the oxygen sensor, wait until
exhaust pipe cools, otherwise it will damage ex-
haust pipe.
B: INSTALLATION
1) Before installing rear oxygen sensor, apply the
anti-seize compound only to the threaded portion of
rear oxygen sensor to make the next removal eas-
ier.
Anti-seize compound:
SS-30 JET LUBE
CAUTION:
Never apply anti-seize compound to protector
of rear oxygen sensor.
2) Install the rear oxygen sensor.
Tightening torque:
21 N
⋅m (2.1 kgf-m, 15.2 ft-lb)
3) Connect the connector to the rear oxygen sen-
sor.
4) Lower the vehicle.
FU-00009
EX-00030
FU-00198
FU-00199
FU-00198
EX-00030