How do you replace spark plugs to citroen xsara break?

To replace the spark plugs on a Citroën Xsara Break, first, ensure the engine is cool and disconnect the battery. Remove the ignition coil or spark plug wires, then use a spark plug socket to carefully unscrew and remove the old spark plugs. Apply a small amount of anti-seize compound on the threads of the new plugs, insert them, and tighten to the manufacturer's specified torque. Reattach the ignition coils or wires and reconnect the battery to complete the process.