How do you get the nut on a pulley for a 2000 Mitsubishi mirage to loosen?

To loosen the nut on a pulley for a 2000 Mitsubishi Mirage, first ensure the engine is off and cool. Use a socket wrench to turn the nut counterclockwise, applying penetrating oil if necessary to break any rust or corrosion. If the pulley is stubborn, you may need to secure the pulley with a wrench or a strap wrench to prevent it from spinning while you loosen the nut. Additionally, a breaker bar can provide extra leverage if the nut is particularly tight.