How do you adjust the valves Volvo 940 gl?

To adjust the valves on a Volvo 940 GL, first, ensure the engine is cold and remove the valve cover. Then, using a feeler gauge, measure the gap between the rocker arm and the valve stem for each cylinder, following the specifications in the service manual. Adjust the gap by loosening the locknut and turning the adjusting screw until the desired clearance is achieved, then tighten the locknut securely. Finally, recheck the clearance to ensure it remains within specifications before reassembling the valve cover.