How do you adjust valve clearance on a clio 1.4 8 valve engine?

To adjust the valve clearance on a Clio 1.4 8-valve engine, first, ensure the engine is cold and remove the valve cover. Use a feeler gauge to measure the clearance between the rocker arm and the valve stem. If adjustment is needed, loosen the lock nut on the rocker arm and turn the adjustment screw to achieve the specified clearance, then tighten the lock nut. Finally, recheck the clearance to ensure it's within the manufacturer's specifications before reassembling the valve cover.