chain adjustment

Hi All, I know the title of my post sounds like the title of a bad soap opera, but... I was trying to take some slack out of my '13 FZ1's chain. Following the manual to the letter, I am immediately struck by the fact that though the book says to "loosen both axle nuts", my bike only has one...

This has been covered many times on this site, but I have to admit the image in owner's manual is confusing! Take a look at lower left corner for chain slack measurement: (re-using schleppy's pic.. thanks!!) Here is the confusing bit (in my opinion): if you look at that diagram, it...