Before servicing the valve, remove the cylinder head and, using a universal valve spring compressor, first compress the valve springs. Get rid of the valve retaining locks, valve spring retainers, valve seals and valve springs. Before unscrewing the valves, clear any burrs from the grooves to keep from damaging the guides and check that you know which valve goes where. Clean and check the valves using the required cleaning and inspection procedure. After cleaning the valve stems, apply some clean engine oil and put them into each cylinder on the head. Place new
Valve Stem Seals on all the valves with the help of a valve stem seal tool, so the seals are pushed all the way and straight into position on the valve guides. To prevent thorough wear on the guide, it is necessary to use matching oversize valve seals. Install the springs and retainers onto the valve, making sure to only compress the springs slightly so you can install the locks and that the springs are correctly compressed as any misalignment could injure the valve stems. When compressing the valve spring retainers with the tool, make sure neither of the locks has slipped out, as this may happen, so check both of them once the tool is removed. Check after refacing the valve and seat by measuring the installed height B of the valve spring, from the spring seat top to the bottom of the spring retainer. Should the spring measure more than 38.75 mm (1.525 inch height), add a 0.762 mm (0.030 inch) spacer beneath it to meet the correct height.