Spark Plug: Service and Repair

12 12 011 Replacing All Spark Plugs (N52T)







Special tools required:
- 12 1 171







Necessary preliminary work:
- witch off ignition.
- Remove ignition coils.







IMPORTANT:
Wear safety goggles.
Oil and dirt particles may get into your eyes.
Clean spark plug slot with compressed air.







Unscrew the spark plugs with special tool 12 1 171 and an extension with joint.

Installation note:
First, screw the spark plugs into the engine hand-tight with special tool 12 1 171 and an extension with joint.

Next, tighten the spark plugs with a torque wrench, special tool 12 1 171 and an extension with joint.

Observe tightening torque.

Tightening torque 12 12 2AZ.