Subaru 2009 IMPREZA Service Manual page 75

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3. DOHC MODEL RH

1) Disconnect the ground cable from battery.

2) Remove the air cleaner case.

<Ref. to IN(H4DOTC)-9, REMOVAL, Air Cleaner

3) Disconnect the connector from ignition coil.

4) Remove the ignition coil.

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

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

6) Install in the reverse order of removal.

Tightening torque (Spark plug):

21 N·m (2.1 kgf-m, 15.5 ft-lb)

Tightening torque (Ignition coil):

16 N·m (1.6 kgf-m, 11.8 ft-lb)

4. DOHC MODEL LH

1) Remove the battery and battery carrier.

2) Disconnect the air duct from the secondary air

3) Remove the bolts attaching the air duct to the

rocker cover (LH) and raise the air duct.

4) Disconnect the connector from ignition coil.

5) Remove the ignition coil.

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

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

7) Install in the reverse order of removal.

Tightening torque (Spark plug):

21 N·m (2.1 kgf-m, 15.5 ft-lb)

Tightening torque (Ignition coil):

16 N·m (1.6 kgf-m, 11.8 ft-lb)

Tightening torque (Air duct):

9 N·m (0.9 kgf-m, 6.6 ft-lb)

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