How do you change spark plugs on a 1997 Toyota RAV4?

To change the spark plugs on a 1997 Toyota RAV4, first ensure the engine is cool and disconnect the negative battery terminal. Remove the engine cover if necessary, then carefully disconnect the spark plug wires by pulling on the boot, not the wire. Use a socket wrench to remove the old spark plugs, replacing them with new ones while ensuring they are gapped correctly. Finally, reconnect the spark plug wires and the battery terminal.