Second chain is attending as described.
The installation instructions for the blade and the chain is more complicated than it needs to actually written. Loosen plastic cap, pull it off. Pull chains on sword, create sword and place the chain over the sprocket. Plastic cap sit on again, tighten slightly, chain tensioning and then tighten the cap again slightly. Done.
Please remeber to check the oil level. I use normal salad oil, lubricates and does not stink. In addition, it costs nothing compared to the professional chain oil.