Take out the air cleaner, the cylinder head covers and spark plugs before replacing the valve springs and stem seals. Disable the coil by removing it from the distributor and attach it to a good ground so the engine won't start. Put a suitable socket and handle on the crankshaft retaining bolt, turn the engine and keep going until the No.1
Piston stops dead on the compression stroke. After that, remove the
Rocker Arms. Secure the air hose to the adapter in the No.1 spark plug hole and push in 90 - 100 psi of air pressure. Ease removal of the valve springs by carefully compressing them with the MD-998772A tool, together with adapter 6716A and remove the retainer locks afterward. After putting the seals on the exhaust valves, move them so they touch the guide and gently push the intake valve stem seals directly over the guide but don't force them into the top. When adding the valve retainer locks, make sure only to compress the spring enough for them to be installed. Do this for each cylinder one after another, removing the valve spring when the piston is at Top Dead Center in its firing sequence 1-8-4-3-6-5-7-2. After making replacements, pull the adapter from the No.1 spark plug hole and refit the spark plugs, rocker arms, covers and coil wire to the distributor. After that, set up the air cleaner and test how the vehicle works with it on the road.