line
You have one of the early ones. you will have to lift the boat off the trailer in order to change the line.Undo the line from centerboard and tie a tracer line to it. Pull the tracer line up till it comes to the deck. Remove the old line and measuure it for replacement.To let the centerboard down, there is a cover plate inside at the base of the compression post held in either by caulking or screws. Take it off and you will see a big bolt. Unscrew bolt and when putting it back on, put 5200 marine sealant around it so water cannotseep through.Happy sailing