1997 SUBARU LEGACY service

B2M1179D
3) Remove operating cylinder. (MT vehicle only)
B2M1684
NOTE:
Place the operating cylinder where it will not interfere with
the work in process.
B2M1685A
4) Remove band clip which fastens engine harness to
engine coolant hose.
B2M1686
5) Disconnect knock sensor connector.
B2M1682
6) Remove knock sensor from cylinder block.
36
2-7SERVICE PROCEDURE
19. Knock Sensor

B2M1682A
B: INSTALLATION
1. 2200 cc MODEL
1) Install knock sensor to cylinder block.
Tightening torque:
23.5±2.9 N⋅m (2.4±0.3 kg-m, 17.3±2.1 ft-lb)
NOTE:
The extraction area of the knock sensor cord must be posi-
tioned at a 45°angle relative to the engine rear.
B2M1681
2) Connect knock sensor connector.
B2M1687A
NOTE:
The knock sensor cord must pass between the engine
harness and engine coolant hose.
B2M1680A
3) Fasten engine harness to engine coolant hose with
band clip.
NOTE:
Make sure that the throttle linkage does not interfere with
other parts in the operating area.
B2M1679
4) Install air intake chamber.
37
2-7SERVICE PROCEDURE
19. Knock Sensor

G6M0095
5) Connect battery ground cable to battery ground termi-
nal.
B2M1682A
2. 2500 cc MODEL
1) Install knock sensor to cylinder block.
Tightening torque:
23.5±2.9 N⋅m (2.4±0.3 kg-m, 17.3±2.1 ft-lb)
NOTE:
The extraction area of the knock sensor cord must be posi-
tioned at a 45°angle relative to the engine rear.
B2M1686
2) Connect knock sensor connector.
B2M1688A
NOTE:
The connector must be connected to the engine front end
of the engine coolant hose.
B2M1689A
38
2-7SERVICE PROCEDURE
19. Knock Sensor

B2M1685A
3) Fasten engine harness to engine coolant hose with
band clip.
NOTE:
Make sure that the throttle linkage does not interfere with
other parts in the operating area.
B2M1179E
4) Install operating cylinder. (MT vehicle only)
Tightening torque:
37±3 N⋅m (3.8±0.3 kg-m, 27.3±2.2 ft-lb)
NOTE:
Apply grease to contact point of release lever and operat-
ing cylinder rod.
B2M1683
5) Install air intake chamber.
G6M0095
6) Connect battery ground cable to battery ground termi-
nal.
39
2-7SERVICE PROCEDURE
19. Knock Sensor

1. Fuel System
A: SPECIFICATIONS
Fuel tankCapacity 60
(15.9 US gal, 13.2 Imp gal)
Location Under rear seat
Fuel pumpType Impeller
Discharge pressure 250.1 kPa (2.55 kg/cm
2, 36.3 psi)
Discharge flowAWD: More than 80
(21.1 US gal, 17.6 Imp gal)/h
FWD: More than 65
(17.2 US gal, 14.3 Imp gal)/h
[12 V at 300 kPa (3.06 kg/cm
2, 43.5 psi)]
Fuel filterCartridge type
2
2-8SPECIFICATIONS AND SERVICE DATA
1. Fuel System

1. Precautions
WARNING:
Place “No fire” signs near the working area.
Disconnect ground terminal from battery.
Be careful not to spill fuel on the floor.
G2M0340
A: RELEASING OF FUEL PRESSURE
1) Take off floor mat.
2) Remove access hole lid.
B2M0047
3) Disconnect connector from fuel pump.
4) Start the engine, and run it until it stalls.
5) After the engine stalls, crank it for five more seconds.
6) Turn ignition switch OFF.
G2M0340
B: DRAINING OF FUEL
1) Remove rear seat and seat back.
2) Remove access hole lid.
B2M0047
3) Disconnect connector from fuel pump.
4) Release fuel pressure.
10
2-8SERVICE PROCEDURE
1. Precautions

B2M0048A
5) Disconnect fuel delivery hose
1and return hose
2.
6) Disconnect jet pump hose

3. (AWD model)
G2M0343
7) Remove nuts which install fuel pump assembly onto
fuel tank.
G2M0344
8) Take off fuel pump from fuel tank.
G2M0345
9) Drain fuel from fuel tank by using a hand pump.
WARNING:
Do not use a motor pump when draining fuel.
G2M0346
10) After draining fuel, reinstall fuel pump.
Tighten nuts in numerical sequence shown in Figure to
specified torque.
Tightening torque:
4.4±1.5 N⋅m (0.45±0.15 kg-m, 3.3±1.1 ft-lb)
11
2-8SERVICE PROCEDURE
1. Precautions

B2M0049
11) On AWD model, after removing fuel sub meter unit,
drain fuel from there.
WARNING:
Do not use a motor pump when draining fuel.
2. On-Car Services
A: MEASUREMENT OF FUEL PRESSURE
1) Release fuel pressure.
2) Connect connector to fuel pump.
G2M0347
3) Disconnect fuel delivery hoses from fuel filter, and con-
nect fuel pressure gauge.
G2M0348
4) Start the engine.
5) Measure fuel pressure while disconnecting pressure
regulator vacuum hose from collector chamber.
Fuel pressure:
235 — 265 kPa (2.4 — 2.7 kg/cm
2, 34 — 38 psi)
6) After connecting pressure regulator vacuum hose, mea-
sure fuel pressure.
Fuel pressure:
177 — 206 kPa (1.8 — 2.1 kg/cm
2, 26 — 30 psi)
WARNING:
Before removing fuel pressure gauge, release fuel
pressure.
NOTE:
If out of specification as measured at step 6), check or
replace pressure regulator and pressure regulator vacuum
hose.
12
2-8SERVICE PROCEDURE
1. Precautions - 2. On-Car Services