Note how the assembly attaches to the LNB.
The 2 screws that hold everything in place are screwed into
the narrow plate at the bottom of the assembly. Keep the
screws very loose… you’ll see why in the next frame.
Now slide the LNB assembly onto the opening of the
bracket. There is a slot just large enough to slide the
narrow plate into.
The LNB should move back and forth freely on the
bracket.
The marking on the bracket show you where you should
slide the LNB to.
Here, the LNB is lined up on Mark 10. Tighten the 2
Phillips screws to secure the LNB assembly into place.