2012 Subaru Outback F6-3.6L DOHCFACTORY OEM SERVICE PROCEDURE

Spark Plug: Service and Repair

Spark Plug

REMOVAL

Spark plug: Refer to "SPECIFICATION", General Description.

1. RH SIDE
1. Remove the collector cover.

NOTE: Follow the steps below when removing the collector cover.

1. Pull up the two points at the rear (A).
2. Pull up the two points at the front (B) while moving them forward.

Factory service manual diagram





2. Disconnect the ground cable from battery.
3. Remove the air cleaner case.
4. Remove the engine harness stay (A).
5. Disconnect the connector (B) from ignition coil.

Factory service manual diagram





6. Remove the ignition coil.

NOTE: Turn the #5 ignition coil to remove it.

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

Factory service manual diagram




Factory service manual diagram





2. LH SIDE
1. Remove the collector cover.

NOTE: Follow the steps below when removing the collector cover.

1. Pull up the two points at the rear (A).
2. Pull up the two points at the front (B) while moving them forward.

Factory service manual diagram





2. Remove the battery and battery carrier.
3. Remove the engine harness stay (A).
4. Disconnect the connector (B) from ignition coil.

Factory service manual diagram





5. Remove the ignition coil.

NOTE: Turn the #6 ignition coil to remove it.

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

Factory service manual diagram




Factory service manual diagram





INSTALLATION

1. RH SIDE
Install in the reverse order of removal.

Tightening torque:
Spark plug: 21 N.m (2.1 kgf-m, 15.5 ft-lb)
Ignition coil; 16 N.m (1.6 kgf-m, 11.8 ft-lb)
Engine harness stay: 6.4 N.m (0.7 kgf-m, 4.7 ft-lb)


2. LH SIDE
Install in the reverse order of removal.

Tightening torque:
Spark plug: 21 N.m (2.1 kgf-m, 15.5 ft-lb)
Ignition coil: 16 N.m (1.6 kgf-m, 11.8 ft-lb)
Engine harness stay: 6.4 N.m (0.7 kgf-m, 4.7 ft-lb)
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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