I tried to get at the header nuts etc by removing the rear shock and fan on my XT ..No way could I get at the nuts properly! ..You need more space..rotate the engine as in the 'how to' section...
American Sport Bike.com also sent me this:
You need to remove the entire airbox, disconnect the upper engine stabilizer bolt (engine end only) there. You need to remove the lower engine stabilizer bolt (frame end only) down near the drive pulley. I only disconnect the O2 sensor, the head temp sensor, and the clutch cable at the clutch lever. All other electrical/fuel connections are untouched, though you may need to cut a tie wrap or two. Pull the tie wrap support right behind the steering head out of the frame with a screwdriver. You need to remove the lower belt guard (06 and later only), the left and right scoops. Remove the muffler, locate the scissors jack there. Remove the three oil cooler subframe bolts that hold the subfame to the main frame (2 bolts left, on bolt right). Then you remove the big front isolator engine bolt, and lower the engine just far enough to get to the top front header bolt on the rear cylinder exhaust port. You want to jack the engine up a little to relieve the load on that front bolt prior to unscrewing it. When the engine is at the perfect height, it is much easier to turn the bolt than when the engine is too high or too low. Lower the engine a little at a time, checking for anything that is interfering or binding. Quiet ambient when you're doing it is a good thing so you can hear if anything is doing something bad.
. I think I feel a bit of a spend coming on 