Holding up the rear a little, slide the front of the mounting plate up under the tail rack. Lower the rear of the plate and slide it back so that the two tabs at the back of the plate go into the rectangular holes in the rear of the tail rack.
When you insert and turn the mounting post in the top case don't press the mounting rod down too hard or you can scratch the tail cowl roundel.
Once you have the 22L case mounted make sure that it's
firmly mounted. If not then you may need to add a spacer washer inside of the case on the mounting post to get the case firmly mounted. If it's loosely mounted then it's POSSIBLE that the case can fall off while riding. (It's never happened to me but I've heard reports of that happening.)
