Replacing All Spark Plugs

Replacing All Spark Plugs (N62)


Switch off ignition.
Remove ignition coils.







Unscrew spark plugs with special tool 12 1 171.

Installation:
Tighten down spark plugs with special tool 12 1 171 and special tool 12 1 172 (torque limiter).
Observe tightening torque without special tool 12 1 172.
Tightening torque, Spark plugs (ungreased).