2012 Subaru Forester X, Automatic TransFACTORY OEM SERVICE PROCEDURE

Non-Turbo Model

Recommended spark plug: 

< Ref. to ELECTRICAL , Forester. >

  • RH side 
  1. Disconnect the ground cable from battery.
  2. Remove the air cleaner case. < Ref. to REMOVAL , Air Cleaner Case. >
  3. Disconnect the connector from ignition coil.
  4. Remove the ignition coil.
    Fig 1: Locating Ignition Coil Mounting Bolts
    G07664565Courtesy of SUBARU OF AMERICA, INC.
  5. Remove the spark plug with a spark plug socket.
  6. 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 
  1. Remove the battery. < Ref. to REMOVAL , Battery. >
  2. Disconnect the connector from ignition coil.
  3. Remove the ignition coil.
    Fig 2: Locating Ignition Coil Mounting Bolts
    G07664566Courtesy of SUBARU OF AMERICA, INC.
  4. Remove the spark plug with a spark plug socket.
  5. 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) 

Factory Service Tools

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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.

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