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Home >> Subaru >> 2007 >> Impreza Outback Sport, Standard >> Repair and Diagnosis >> Maintenance >> Procedures >> General Information >> Periodic Maintenance Procedures >> Spark Plug >> Replacement >> SOHC Model

SOHC Model

  1. Disconnect the battery cables, and then remove the battery and battery carrier.
  2. Remove the air cleaner lower case.
  3. Disconnect the spark plug cord.
  4. Remove the spark plug with a plug-wrench.
    Fig 1: Removing Spark Plug With Plug-Wrench
    G04997233Courtesy of SUBARU OF AMERICA, INC.
  5. Install a new spark plug.

    Recommended spark plug: 

    NGK: FR5AP-11 

  6. Tighten the 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, 15.2 ft-lb) 

    NOTE:
    • Be sure to place the gasket between the cylinder head and spark plug.
    • If the torque wrench is not available, tighten the spark plug until gasket contacts cylinder head; then tighten further 1/4 to 1/2 turns.
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