Spark Plugs - Subaru 2001 LEGACY Service Manual

Periodic Maintenance Services

5. Spark Plugs

A: REPLACEMENT
1. 2.5 L MODEL
SA07683A2001
1) Disconnect battery ground cable.
2) Remove intake duct and intake chamber.
3) Remove washer tank and put it aside.
4) Disconnect spark plug cord.
5) Remove spark plug with a plug-wrench.
6) Set new spark plug.
Recommended spark plug :
With OBD
CHAMPION RC10YC4
CHAMPION RC8YC4
NGK BKR6E-11
NIPPONDENSO K20PR-U11
Spark plug gap
1.0 — 1.1 mm (0.039 — 0.043 in)
Without OBD
NGK BKR6E (Without catalytic converter)
CHAMPION RC10YC4 (With catalytic con-
verter)
NGK BKR5E-11 (With catalytic converter)
Spark plug gap
0.7— 0.8 mm (0.028 — 0.031 in) (Without
catalytic converter)
1.0 — 1.1 mm (0.039 — 0.043 in) (With
catalytic converter)
7) Tighten spark plug lightly with hand, and then
secure with a plug-wrench to the specified torque.
Tightening torque:
20.6 N·m (2.10 kgf-m, 15.19 ft-lb)
NOTE:
¼ Be sure to place the gasket between the cylin-
der head and spark plug.
¼ If torque wrench is not available, tighten spark
plug until gasket contacts cylinder head; then
tighten further 1/4 to 1/2 turns.
SPARK PLUGS
SA07683
SA07683A20
GI0018
2. 3.0 L MODEL
1) Disconnect battery cables and then remove
battery and battery carrier.
2) Remove washer tank and put it aside.
3) Remove air cleaner lower case.
4) Disconnect connector from ignition coil.
5) Remove ignition coil.
6) Remove spark plug with the spark plug socket.
7) Set new spark plug.
Recommended spark plug:
NGK PLFR 6A-11
8) Tighten spark plug lightly with hand, and then
secure with a plug-wrench to the specified torque.
Tightening torque:
21 N·m (2.1 kgf-m, 15 ft-lb)
9) Tighten ignition coil.
Tightening torque:
16 N·m (1.6 kgf-m, 12 ft-lb)
NOTE:
¼ Be sure to place the gasket between the cylin-
der head and spark plug.
¼ If torque wrench is not available, tighten spark
plug until gasket contacts cylinder head: then
tighten further 1/4 to 1/2 turn.
PM-10
SA07683A2002
B2M4336
B2M4333