WARNING: To prevent steering system damage and possible loss of control, the stem and handlebars must be properly adjusted and tightened. DO NOT OVERTIGHTEN.
Testing Handlebar and Stem Tightness
106
Figure 2
3
Figure 2
2
Figure 2
1
To test the tightness of the stem, straddle the front wheel between your legs tightly (see Figures 2
4
& 2
5
). Try to turn the handlebar back and forth. The handlebar should
not slip or move independently of the front wheel at all. If the handlebar does move, re-align the stem with the front wheel and tighten the stem bolt. Re-test to make sure
the stem is secure with the same process.
To test the tightness of the handlebar, hold the bike stationary and try to rotate the ends of the handlebar up and down or move the bar forward and back. If the handlebar
moves, loosen the handlebar clamp nut or bolts evenly to re-position and then re-tighten. Repeat the test until the bars will not move.
Figure 2
4
Figure 2
5
The handlebars should come attached to the stem. Simply ensure that the brake and derailleur cables track smoothly, and that the handlebar bolt(s) are properly tightened
with (C) a 4, 5, or 6 mm Allen Wrench. (See Figures 2
1
-2
3
). In the case of a 2 or 4-bolt stem, tighten the bolts alternating between bolts every few turns. We will adjust the
position and rotation of the handlebars, brake levers, and shifters later on (see page 1
15
).
