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3. Move behind the bicycle to see that the
smallest rear cog, the chain, and both
derailleur pulleys are in alignment.
4. If they are not in alignment, turn the high-
gear limit-screw (usually identified with an
“H”) until they are in alignment.
5. While you pull on the cable, move the shift
lever to the small-cog position.
6. On the shift lever or down tube, turn the
barrel-adjuster fully clockwise. On the
rear derailleur, turn the barrel-adjuster
fully clockwise, then turn it one turn
counterclockwise.
7. Put the cable into the clamp-bolt groove on
the rear derailleur, pull the derailleur cable
tight, and tighten the cable-clamp bolt to
35-53 lb•in (4-6 Nm).
To adjust the large-cog position
1. Turn the low-gear limit-screw on the rear
derailleur (usually identified with an “L”)
counterclockwise until the derailleur can move
freely.
2. Carefully move the chain to the smallest front
chainring and the largest rear cog. Do not
move the rear derailleur too far. The chain
can be caught between the large cog and the
spokes.
3. Move the rear derailleur pulleys in alignment
with the largest cog.
4. Turn the low-gear limit-screw clockwise until
it does not turn easily. If you have turned the
screw too far, the derailleur will move to the
outside of the bicycle.
To align the index system
1. Move the chain to the largest front chainring
and the smallest rear cog.
2. Move the rear shift lever for one click.
3. Make sure the chain moves smoothly to the
second-smallest gear. If the chain makes too
much noise or does not change gears, slightly
turn the barrel-adjuster. Change the gear
again and make sure the change is smooth.
If the chain moves to the third smallest gear,
turn clockwise the barrel-adjuster until the
derailleur pulleys align with the second-
smallest gear.
Note: If the derailleur can not be adjusted
correctly, the derailleur hanger could be
out of alignment. Take your bicycle to your
retailer for service because only your retailer
should adjust the hanger alignment.
Internal gear systems
These systems change gears with a mechanism
that is in the rear hub. Each month, check the
internal gear system.
To adjust a 3 speed system
1. Turn the shift lever to the second-gear
position.
2. Check the alignment. The line on the push
rod should align with the indicator on the bell
crank window (Figure 3.12). To change the
alignment, turn the barrel-adjuster.
3. Move the shift lever to first gear. Then move
the lever to second. Check the adjustment.
To adjust a Nexus 4, 7, or 8 speed system
1. Turn the shift lever to the fourth-gear position.
2. Check the indicator on the rear-hub pulley
(Figure 3.13) with the cog joint bracket. If the
red lines are not in alignment, turn the barrel-
adjuster until they are in alignment.
3. Move the shift lever to first gear. Then move
the lever to fourth gear. Check the adjustment.
FIGURE 3.12
Three-speed rear hub
1. Bell crank window
FIGURE 3.13
Nexus rear hub
1. Pulley
2. Cog joint bracket
3. Cable-clamp bolt
3
2
1
