Subaru 2001 LEGACY User manual

This service manual has been prepared to provide
SUBARU service personnel with the necessary infor-
mation and data for the correct maintenance and
repair of SUBARU vehicles.
This manual includes the procedures for maintenance,
disassembling, reassembling, inspection and adjust-
ment of components and diagnostics for guidance of
experienced mechanics.
Please peruse and utilize this manual fully to ensure
complete repair work for satisfying our customers by
keeping their vehicle in optimum condition. When
replacement of parts during repair work is needed, be
sure to use SUBARU genuine parts.
All information, illustration and specifications con-
tained in this manual are based on the latest product
information available at the time of publication
approval.
FUJI HEAVY INDUSTRIES LTD.
2001 LEGACY SERVICE MANUAL QUICK REFERENCE INDEX
SUPPLEMENT FOR 6 CYLINDER
ENGINE MODEL
G2281GE

2001 LEGACY SERVICE MANUAL QUICK REFERENCE INDEX
SUPPLEMENT FOR 6 CYLINDER
ENGINE MODEL
G2281GE

IGNITION
IG(H6)
Page
1. General Description.....................................................................................2
2. Spark Plug...................................................................................................4
3. Ignition Coil and Ignitor Assembly...............................................................7

1. General Description S141001
A: SPECIFICATIONS S141001E49
Item Designation
Ignition coil and
ignitor assembly
Model FK0140
Manufacturer DIAMOND
Spark plug
Type and manufacturer PLFR6A-11 .......... NGK
Thread size mm 14, P = 1.25
Spark gap mm (in) 1.0 —1.1 (0.039 —0.043)
IG(H6)-2
GENERAL DESCRIPTION
Ignition

B: COMPONENT S141001A05
B2M4330A
(1) Spark plug
(2) Ignition coil and ignitor ASSY Tightening torque: N·m (kgf-m, ft-lb)
T1: 16 (1.6, 12)
T2: 21 (2.1, 15)
C: CAUTION S141001A03
쐌Wear working clothing, including a cap, protec-
tive goggles, and protective shoes during opera-
tion.
쐌Remove contamination including dirt and corro-
sion before removal, installation or disassembly.
쐌Keep the disassembled parts in order and pro-
tect them from dust or dirt.
쐌Before removal, installation or disassembly, be
sure to clarify the failure. Avoid unnecessary
removal, installation, disassembly, and replace-
ment.
쐌Be careful not to burn your hands, because each
part on the vehicle is hot after running.
쐌Be sure to tighten fasteners including bolts and
nuts to the specified torque.
쐌Place shop jacks or safety stands at the speci-
fied points.
쐌Before disconnecting electrical connectors of
sensors or units, be sure to disconnect negative
terminal from battery.
IG(H6)-3
GENERAL DESCRIPTION Ignition

2. Spark Plug S141003
A: REMOVAL S141003A18
CAUTION:
All spark plugs installed on an engine, must be
of the same heat range.
Spark plug:
NGK: PLFR6A-11
1. RH SIDE S141003A1805
1) Disconnect battery ground cable.
G6M0095
2) Remove air cleaner lower case. <Ref. to
IN(H6)-5, REMOVAL, Air Cleaner.>
3) Disconnect connector from ignition coil.
4) Remove ignition coil.
B2M4336
5) Remove spark plugs with the spark plug socket.
B2M4331
2. LH SIDE S141003A1806
1) Disconnect battery cables and then remove
battery and battery carrier.
B6M1506
2) Disconnect washer motor connector.
B6M0562B
3) Remove the two bolts which hold the washer
tank, then take the tank away from the working
area.
B2M2023
4) Disconnect connector from ignition coil.
5) Remove ignition coil.
B2M4332
IG(H6)-4
SPARK PLUG
Ignition

6) Remove spark plug with the spark plugs socket.
B2M4333
B: INSTALLATION S141003A11
1. RH SIDE S101003A1105
Install in the reverse order of removal.
Tightening torque (Spark plug):
21 N·m (2.1 kgf-m, 15 ft-lb)
CAUTION:
The above torque should be only applied to
new spark plugs without oil on their threads.
In case their threads are lubricated, the torque
should be reduced by approximately 1/3 of the
specified torque in order to avoid over-stress-
ing.
Tightening torque (Ignition coil):
16 N·m (1.6 kgf-m, 12 ft-lb)
2. LH SIDE S141003A1106
Install in the reverse order of removal.
Tightening torque (Spark plug):
21 N·m (2.1 kgf-m, 15 ft-lb)
CAUTION:
The above torque should be only applied to
new spark plugs without oil on their threads.
In case their threads are lubricated, the torque
should be reduced by approximately 1/3 of the
specified torque in order to avoid over-stress-
ing.
Tightening torque (Ignition coil):
16 N·m (1.6 kgf-m, 12 ft-lb)
C: INSPECTION S141003A10
Check electrodes and inner and outer porcelain of
plugs, noting the type of deposits and the degree
of electrode erosion.
B2M4334A
(A) Electrode gap
(B) Carbon accumulation or wear
(C) Cracks
(D) Damage
(E) Damaged gasket
1) Normal
Brown to grayish-tan deposits and slight electrode
wear indicate correct spark plug heat range.
G6M0087
2) Carbon fouled
Dry fluffy carbon deposits on insulator and elec-
trode are mostly caused by slow speed driving in
city, weak ignition, too rich fuel mixture, dirty air
cleaner, etc.
It is advisable to replace with plugs having hotter
heat range.
G6M0088
IG(H6)-5
SPARK PLUG Ignition

3) Oil fouled
Wet black deposits show excessive oil entrance
into combustion chamber through worn rings and
pistons or excessive clearance between valve
guides and stems. If same condition remains after
repair, use a hotter plug.
G6M0089
4) Overheating
White or light gray insulator with black or gray
brown spots and bluish burnt electrodes indicate
engine overheating. Moreover, the appearance
results from incorrect ignition timing, loose spark
plugs, wrong selection of fuel, hotter range plug,
etc. It is advisable to replace with plugs having
colder heat range.
G6M0090
D: CLEANING S141003E56
Clean spark plugs in a sand blast type cleaner.
Avoid excessive blasting. Clean and remove car-
bon or oxide deposits, but do not wear away por-
celain.
If deposits are too stubborn, replace plugs.
E: ADJUSTMENT S141003A01
Correct it if the spark plug gap is measured with a
gap gauge, and it is necessary.
Spark plug gap: L
1.0 —1.1 mm (0.039 —0.043 in)
G6M0091
IG(H6)-6
SPARK PLUG
Ignition

3. Ignition Coil and Ignitor
Assembly S141015
A: REMOVAL S141015A18
Direct ignition type is adopted.
For the order of removal, refer to the removal of
spark plugs.
B: INSTALLATION S141015A11
Install in the reverse order of removal.
Tightening torque:
16 N·m (1.6 kgf-m, 12 ft-lb)
C: INSPECTION S141015A10
Because ignition coil is a direct ignition type, the
resistance cannot be measured in a single unit. For
inspection procedure of ignition system, refer to
the following. <Ref. to EN(H6)-77, IGNITION CON-
TROL SYSTEM, Diagnostics for Engine Starting
Failure.>
IG(H6)-7
IGNITION COIL AND IGNITOR ASSEMBLY Ignition

MEMO:
IG(H6)-8
Ignition IGNITION COIL AND IGNITOR ASSEMBLY