How do you replace starter on vectra 04 1.9 cdti?

To replace the starter on a 2004 Vauxhall Vectra 1.9 CDTi, first disconnect the negative battery terminal to prevent any electrical issues. Then, remove any components obstructing access to the starter, such as the air intake or battery tray. Unbolt the starter from its mounting, disconnect the electrical connections, and remove the old starter. Install the new starter by reversing the steps, ensuring all connections are secure before reconnecting the battery.