How do you change belts on a 2004 G-35 infinity?

To change the belts on a 2004 Infiniti G35, first, ensure the engine is off and cool. Remove the plastic engine cover if applicable, then locate the serpentine belt tensioner and use a wrench to relieve tension on the belt. Slide the old belt off the pulleys and install the new belt by following the correct routing diagram, which can usually be found on a sticker in the engine bay. Finally, ensure the belt is properly seated on all pulleys and recheck the tensioner before replacing any covers.