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Home >> Subaru >> 2005 >> Forester X, Standard >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition (H4SO) >> Spark Plug >> Installation >> LH Side
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LH Side

Install in the reverse order of removal.

Tightening torque: 

21 N.m (2.1 kgf-m, 15.2 ft-lb) 

NOTE: The above torque should be only applied to new spark plugs without oil on their threads.

In case their threads are lubricated, the torque should be reduced by approx. 1/3 of the specified torque in order to avoid over-stressing.