Ain't that just the beans!
The workshop manual tells you to measure the slack on the centre stand, but a centre stand isn't standard. The Haynes manual says measured on the side stand. On top of that, if you use a paddock stand, the wheel is off the ground, but the suspension is still loaded, so you'll get a different measurement compared to using a centre stand.
Ignore it all, lift rear wheel, find tight spot, lower rear wheel, sit on bike, lean down and feel for slack, if there is a little like 10-20cm, you're about right for when you load up with a passenger or luggage, depending on how heavy you are. That's the way all "old school" mechanics do it. Have just enough so it's not going piano wire tight on full compression of the suspension, and not so much that it rides up on the teeth on over run.
Once you've done that, you can then stand the bike up however you want, either side, centre or paddock stand and measure the slack. From then on, use what ever measurement you get as an easy adjustment. Mine is currently 55mm on the side stand and seems to be "just so".
Mick
