How to change valve stem seals without removing the heads

A easy way to change valve stem seals without removing the heads with alot less head aches.

Instructions

1

Take the old spark plug and break off the ceramic part and remove the electrode.
Have the threaded part welded to the air chuck fitting, make sure it has a good bead so air does not escape.

2

Remove the spark plug from the cylinder and replace the plug with the air chuck plug.

3

Put the air hose on the fitting and this will hold both the intake and out take valves up while removing the spring and keepers and allow easy replacement of seals