Impreza Outback Sport AWD F4-2.5L SOHC (2002)
Spark Plug: Adjustments
ADJUSTMENT
Correct it if the spark plug gap is measured with a gap gauge, and it is necessary.
Spark plug gap: L
1.0 - 1.1 mm (0.039 - 0.043 in)
NOTE: Replace with a new spark plug if this area is worn to "ball" shape.