That was 1994 or before. No manual that we can find, but it’s pretty simple. Place the unit in a vise, put the shaft in the extractor and tighten the set screws. Choose the correct size adaptor to place over shaft above the hosel. Heat the neck of the club head with a heat gun, turn the 3/4″ bolt to extract the club head. Obviously you have to set the 3/4″ bolt back so you will have room as you crank it to push the head off. Below is a link to the instructions of our Value Shaft Extractor. Not exactly the same, but might help. If we can find an old instruction manual for the GSEX, I will let you know.