How do you set tappets on ford sierra v6 3l?

To set the tappets on a Ford Sierra V6 3.0L, first, ensure the engine is cold. Remove the valve covers and use a feeler gauge to check the clearance between the tappet and the rocker arm. Adjust the tappets by loosening the lock nut and turning the adjusting screw to achieve the specified clearance, typically around 0.25 mm (0.010 inches) for intake and exhaust valves. Recheck the clearance after tightening the lock nut, and then reassemble everything once the correct settings are confirmed.