12 12 011 Replacing all spark plugs (M60, M62): Installation:
Tighten down spark plugs with special tool 12 1 171 and special tool 12 1 200 (torque limiter).
Without special tool 12 1 200, observe tightening torque.
Tightening torque, see 12 12 1AZ in ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES .