Fit the grommets to the screen - this is best achieved from the back of the screen blade. 

Using a 12mm socket or spanner, slightly loosen the bolt which secures the headlight to the bottom yoke (ie the bolt under the yoke, not the headlight height adjustment bolt).

Now remove the two 12mm bolts which hold the wire cable retainer to the top yoke. These are fiddly and difficult to get to - patience needed! To give a little more clearance, you can move the headlamp to the side. A small ratchet wrench helps, too.

Fit the screen brackets to the yoke, then fit the wire cable retainer under these brackets, and refit the bolts. Note that the screen brackets must fit directly onto the yoke! Tighten the bolts (even more fiddly now the brackets are in the way), but not fully.

With both brackets fixed, hold the screen blade in position and loosely fit the four hexagon head machine screws with their washers, ensuring that they engage in the captive nuts on the brackets. Do not tighten these yet. There will probably be a small amount of tension from the wire retainer, which should sit in the shallow recess in the brackets. If there is a lot of tension, double check that the wire part is sitting correctly on its bolts - it can move when tightening.

Sit on the bike and make sure the screen is central; this is achieved by eye, lining it up with the speedometer and the centreline of the bike. You should line up the headlamp too, so that everything looks right. When this is the case, tighten up the headlamp bolt and the screen brackets. Once everything is in position, gradually tighten all the screws evenly until they are seated on the brackets. Do not overtighten these screws as damage to the brackets or threads may result.

Double check that everything is sufficiently tight and if so, fitting is now complete!