Subaru Legacy IV (2008 year). Manual — part 293

SP(H4DOTC)-2

General Description

SPEED CONTROL SYSTEMS

1. General Description

A: SPECIFICATION

Specifications for the turbo model are the same as
the SOHC model. <Ref. to SP(H4SO)-2, General
Description.>

IG(H4DOTC)-2

General Description

IGNITION

1. General Description

A: SPECIFICATION

B: COMPONENT

Item

Specification

Ignition coil

Type

FK0334

Ignition system

Independent ignition coil

Manufacturer

Diamond Electric

Spark plug

Manufacturer and type

NGK: SILFR6A

Thread size (diameter, pitch, length)

mm

14, 1.25, 26.5

Spark plug gap

mm (in)

0.7 — 0.8 (0.028 — 0.031)

Electrode

Iridium

(1)

Spark plug

(2)

Ignition coil

Tightening torque:N·m (kgf-m, ft-lb)

T1: 21 (2.1, 15.5)

T2: 16 (1.6, 11.8)

IG-02079

(1)

T1

T2

T1

(1)

(2)

(2)

T2

IG(H4DOTC)-3

General Description

IGNITION

C: CAUTION

• Wear appropriate work clothing, including a cap,
protective goggles and protective shoes when per-
forming any work.
• Remove contamination including dirt and corro-
sion before removal, installation or disassembly.
• Keep the disassembled parts in order and pro-
tect them from dust and dirt.
• Before removal, installation or disassembly, be
sure to clarify the failure. Avoid unnecessary re-
moval, installation, disassembly and replacement.
• Vehicle components are extremely hot after driv-
ing. Be wary of receiving burns from heated parts.
• Be sure to tighten fasteners including bolts and
nuts to the specified torque.
• Place shop jacks or rigid racks at the specified
points.
• Before disconnecting connectors of sensors or
units, be sure to disconnect the ground cable from
the battery.

IG(H4DOTC)-4

Spark Plug

IGNITION

2. Spark Plug

A: REMOVAL

Spark plug:

Refer to “SPECIFICATION” for the spark
plug. <Ref. to IG(H4DOTC)-2, SPECIFICA-
TION, General Description.>

1. RH SIDE

1) Remove the collector cover.
2) Disconnect the ground cable from battery.

3) Remove the air cleaner case. <Ref. to
IN(H4DOTC)-8, REMOVAL, Air Cleaner Case.>
4) Disconnect the connector from ignition coil.
5) Remove the ignition coil.

NOTE:
Turn #3 ignition coil by 180 degrees to remove it.

6) Remove the spark plug with a spark plug socket.

2. LH SIDE

1) Remove the collector cover.
2) Remove the battery. <Ref. to SC(H4SO)-20,
REMOVAL, Battery.>
3) Disconnect the air duct from the secondary air
pump.
4) Remove the bolts attaching the air duct to the
rocker cover LH and raise the air duct.

5) Disconnect the connector from ignition coil.
6) Remove the ignition coil.

NOTE:
Turn #4 ignition coil by 180 degrees to remove it.

7) Remove the spark plug with a spark plug socket.

IN-00203

IG-02091

IG-02067

IG-02089