Did the job yesterday, all told about 2 hours.
I had removed the front cover as I was moving my DC power receptacle. Thinking that I would loosen the fork caps before removing the forks I tried a 22mm box end wrench. No go, as the wrench seemed to be slightly too big. I tried a 21mm wrench and it was too small.
So, I just ended up clamping the forks in a vise using the fender brackets between 2 pieces of wood. Worked well. I used an electric impact gun and 22mm impact socket to remove the caps. They were on pretty tight. Then, to prevent spring rebound, I kept the pressure on the impact gun as I very slowly unscrewed each cap. Nothing shot or spurted out. Remember to clamp the fork tilted up so no oil runs out when the cap comes off.
Then I followed HyperPro's instructions on draining the old oil, refilling with the new oil, and purging the air. On reassembly, I held just the 22mm socket in my hand, pushed hard, and screwed the caps on. You don't reuse the Honda spring spacer, but you do reuse the washer that sits on top of each spring. To finish tightening each cap, I gave the caps a very short burst of the impact gun.
Reinstallation was easy. If you had followed my thread on disk brake drag, you'll know that when everything was back together there seemed to be quite a bit of disk brake drag. I have since ruled this as not abnormal, as there is no evidence of overheating of the disk or pads. I assume with time that as the pads wear the dragging will diminish.
My observations for those who have not done this yet:
1) Do not be afraid to remove the front and lower covers. When each screw came out, I used masking tape to attach it to the tupperware beside each screw hole. Very easy for reassembly.
If you don't remove the front cover, don't expect to get a socket over the upper pinch bolts. Not enough room. You'll need a box end wrench.
2) The 4 push pins used on the lower cover can be reused if you remove them properly. Take a sharp object, like a scratch awl, and press the center of the push pin. That will release the pin. Then squeeze the back of the pin with your fingers and it will easily lift out.
3) While the lower cover is off and the front fender and wheel out of the way, you have great access to the radiator. Clean off any petrified bugs and use an exacto knife to straighten any bent fins.
4) The HyperPro kit comes with a small unlabelled container containing what looks like stale peanut butter. Use this grease for lubing the exposed sliding surface of the forks.
Every time I have any tupperware off, I marvel at the thought and engineering that went into the design of the Swing. Everything works, and works very well. Honda is known for its engineering and design. I can guarantee that you will not find this type of engineering and execution on a Burgman.
Finally, my take on the HyperPros. As others have stated, I also put this accessory right up there with the impact of a J. Costa variator. In fact, in terms of daily use, I would recommend these springs before any other mod or accessory. They smooth the ride, and any jarring from minor road imperfections is gone. The Swing no longer feels like a scooter while driving down the road. It is that smooth. I haven't been out on the highway yet, so I'll have to comment on the high speed handling and cornering later. For now, two thumbs way up!