Using the Pic the Link with the Black Line represents the Master Link. This is based on how I think it can be done but not on My experience.
Sover the Master Link into the both sides of ther rear part of the chain with the Rollers. That is the Master Link, a Link on eac side, a Roller on each side and a link on each side.
You hand on to the Rollers marked in Red and flip the 4 Links in red out of the way.
You shove the Master Link all the way forward and you press the new Oval Link Plate Flush to the end of the Master Link. Then you pull the Master Link back gently.
You flip the 4 lniks in read back into position and you insert the 2 Rollers in read.
At this point I don't know if you can use the Crimping Tool to push the Master Link through the Forward Links or not but you need to do that.
With the the Master Link all the way through all of the Links and Bushings on the Chain instal the last Oval Link Plate with the Proper Head position on the Toole and then reposition the Head to crimp the Master Link over.
I have not read the repair links on that but I guess you should.
DIY Repair Links
http://www.peachparts.com/shopforum/diy-links-parts-category/
http://www.peachparts.com/Wikka/DoItYourSelf