Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Non-Turbo Model
Recommended spark plug:
< Ref. to ELECTRICAL , Forester. >
- RH side
- Disconnect the ground cable from battery.
- Remove the air cleaner case. < Ref. to REMOVAL , Air Cleaner Case. >
- Disconnect the connector from ignition coil.
- Remove the ignition coil.
- Remove the spark plug with a spark plug socket.
- Install in the reverse order of removal.CAUTION: Degrease the installing portion and mounting bolt of the ignition coil.
Tightening torque (Spark plug):
17 N.m (1.7 kgf-m, 12.5 ft-lb)
Tightening torque (Ignition coil):
12 N.m (1.2 kgf-m, 8.9 ft-lb)
- LH side
- Remove the battery. < Ref. to REMOVAL , Battery. >
- Disconnect the connector from ignition coil.
- Remove the ignition coil.
- Remove the spark plug with a spark plug socket.
- Install in the reverse order of removal.CAUTION: Degrease the installing portion and mounting bolt of the ignition coil.
Tightening torque (Spark plug):
17 N.m (1.7 kgf-m, 12.5 ft-lb)
Tightening torque (Ignition coil):
12 N.m (1.2 kgf-m, 8.9 ft-lb)
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.