Which way do you turn the lock nut to loosen it when adjusting the valves on a 1982 Datsun 280zx?

To loosen the lock nut when adjusting the valves on a 1982 Datsun 280ZX, turn the nut counterclockwise. This will release the tension on the adjustment screw, allowing you to make the necessary valve adjustments. Always ensure you have the correct tools and follow proper procedures for valve adjustment.