How do you replace 2002 Nissan Quest timing belt?

To replace the timing belt on a 2002 Nissan Quest, first, ensure the engine is cool and disconnect the battery. Remove the necessary components, including the engine covers and, if needed, the radiator for better access. Align the timing marks on the crankshaft and camshaft, then remove the old belt and install the new one, making sure it's properly tensioned. Reassemble all components, double-checking the alignment before starting the engine.