I will try to keep this "ible" short and sweet.
Note I also took apart and cleaned and re-lubed all of the O-rings, and the venturi. If you are going to have it taken apart you should just complete the tuneup as well, so I did. That's not part of this instructable. Sorry.
Here are some good links
Step 1: Materials and Tools List
Permanent marker (I use Sharpies)
Small piece of cardboard
Step 2: Disassemble the Unit
Using your permanent marker, if you know where the leak is, make a reference mark for later. In this case I do know where it is because salt is coming out of the crack.
Disassemble the water softener and remove the insides so you only have the reservoir.
Empty the salt in a safe location "INFO NOTE" salt will kill your plants don't pour it, or any left over salt brine water, in your yard.
Spray out inside of reservoir until it looks clean. Then dry out with a towel or let it air dry, your choice.
Step 3: The repair
Since I am to big to crawl into this thing I will have to repair this thing from the outside in.
2. Grab your sandpaper, use your sand paper to rough up the area where the crack is. Rough the area up to about 1 inch in diameter around the crack. after you have done this wipe the dust off of the area of the reservoir.
Step 4: Prep the Materails
Step 1. Mix your epoxy. Mix your epoxy on a portable surface something you can carry while you crawl in to the reservoir. I normally use a piece of cardboard and a Popsicle stick, this time I used a paper plate I also use 5 minute epoxy.
Step 2. Have a small bowl of water and some dish soap nearby. You can mix some soap in the water if you like.