Loosen clamps "1" and "2" and remove the air pipe.

All
Disconnect connector "2". Unscrew screw "1" and remove the corresponding ignition coil.

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Installation
Installation in reverse order. Loosely insert all ignition coils into the spark plug wells. Align the ignition coils relative to the connectors and simultaneously connect all connectors to the coils. Install the coils on the spark plugs, pressing them evenly with your hand (the use of impact tools is prohibited).
Tightening torque
