The spark plugs must be replaced in the following order. Prepare the devices "12.1.171" and "12.1.200". Remove the ignition coils and using the device "12.1.171" with the tip "12.1.200" (fig. 3.163), remove the spark plugs.
When installing spark plugs, use tools "12.1.171" and "12.1.200" (torque limiter), screw in the spark plugs. If the "12.1.200" tool is not used, tighten the spark plugs to a torque of 27-33 N·m (2.7-3.3 kgf·m).