Many times the forks are as far down as they can go in the clamps already. Put bike on center stand. May need to remove front wheel, especially if it's heavy. Loosen clamps. Move the forks where you want them. Keep in mind there are limits to how far you can move them. Be careful tightening up the clamps also. Pretty easy but know the limits, know the tightening sequence of your clamp bolts and know the torque specs.
'08 990 Adventure Orange of course
'00 520 EXC
'14 500 XCW