ET, if you are talking about the position of the rear brake pedal, you can raise or lower it to make it fit your foot more comfortably.
At the far end of the rear brake pedal, you will see the plunger that pushes into the rear brake reservoir. There are two nuts on this threaded plunger.
By undoing both, you can raise or lower the brake pedal-this won't effect the brake power, just your ability to stand on it harder maybe.
Here's the notes from the service manual. Tried to copy and paste the photo, so it made more sense, but not smart enough to do that. If some one can help me out, I'll post it. If not PM with your email and I'll send the picture with an attached file.
Brake Pedal Position Adjustment
○Usually it is not necessary to adjust the pedal position,
but always adjust it when the push rod locknut has been
Right Rear Frame Cover (see Rear Frame Cover Removal
in the Frame chapter)
Right Front Footpeg Stay (see Brake Pedal Removal) •Loosen the locknut [A] and turn the push rod with the hex
head [B] to achieve the correct pedal position.
If the length [C] shown is 70 ±1 mm (2.76 ±0.04 in.), the
pedal position will be within the standard range. •Tighten:
Torque - Rear Master Cylinder Push Rod Locknut: 18 N·m
(1.8 kgf·m, 13 ft·lb)
•Install the right front footpeg stay (see Brake Pedal Installation).
Torque - Footpeg Stay Bolts: 34 N·m (3.5 kgf·m, 25 ft·lb)
•Check the brake light switch operation (see Brake Light
Switch Operation Inspection in the Periodic Maintenance