Suzuki 2005 GSF1200 Service Manual page 398

6B-11 Steering / Handlebar:
4) Do the same on the other grip end.
5) If the initial force read on the scale when the
handlebar starts turning is either to heavy or too
light, adjust it till it satisfies the specification.
a) First, loosen the front fork upper and lower clamp
bolts, steering stem head nut and steering stem
nut, and then adjust the steering stem nut by
loosening or tightening it.
Special tool
(B): 09910–60611 (Universal clamp
wrench)
(B)
I649G1620042-01
b) Tighten the steering stem nut, stem head nut and
front fork upper and lower clamp bolts to the
specified torque and recheck the initial force with
the spring scale according to the previously
described procedure.
c) If the initial force is found within the specified
range, adjustment has been completed.
NOTE
Hold the front fork legs, move them back and
forth and make sure that the steering is not
loose.