Operation Manual

Chapter 3: Adjustment 16
To align or adjust a quill-type stem
To adjust the height of the adjustable-rise stem
in Figure 13, first change the stem angle (see
the subsequent section), which gives access to
the expander bolt.
1. Decrease the tightness of the expander bolt
two to three turns.
2. The stem is held by the stem wedge. To
decrease the tightness of the stem wedge,
tap the top of the expander bolt with a mallet
that has a wood or plastic face.
3. Adjust the handlebar to the necessary height,
but the minimum-insertion mark must be
in the frame (Figure 13). A minimum of 2
3/4
”
(70 mm) of the stem quill should always be
in the frame.
4. Tighten the expander bolt to 120 lb•in
(13.6 N•m).
FIGURE 14:
Minimum-insertion mark
on quill stem
1. The bicycle frame
should hide this line
1
WARNING: A quill stem that is too
high can cause damage to your bicycle,
decrease your control, and cause you to
fall. Make sure the minimum-insertion
mark (Figure 14) is in the frame.
Minimum spacers with a direct-connect stem
On a bicycle with an aluminum steerer, there
should be at least one 5mm spacer under
the direct-connect stem. On a bicycle with a
carbon steerer, there should be at least one
5mm spacer below the stem and also one 5mm
spacer above the stem (Figure 15).
FIGURE 15:
Required spacers above
and below a direct-
connect stem
WARNING: Incorrect or missing
spacers can cause damage to the
steerer of the fork, possibly causing it
to break. If the steerer breaks, you
could fall.
To align a direct-connect stem
1. Decrease the tightness of the steerer-clamp
bolts two to three turns.
2. Align the stem with the front wheel.
3. Tighten the steerer-clamp bolts to
100-120 lb•in (11.3-13.6 N•m).
To adjust the height of a direct-connect stem
To adjust the height of the handlebar with a
direct-connect stem, the headset bearing must
be adjusted. Special tools and training are
necessary for bearing adjustment, so only your
dealer should do this.
To change the angle of an adjustable-rise stem
1. Decrease the tightness of the angle
adjustment bolt (Figure 13) until the stem
angle can be changed.
2. Move the stem to the necessary angle.
3. Tighten the angle-adjustment bolt to
150-170 lb•in (17-20.3 N•m).