Schwinn HYBRID BICYCLE Owner's Manual page 55

Using the Rear Shifter
The rear shifter (right) will have an indicator that reads either
low to high or a series of numbers from 1 and up. Low or "1" is
the lowest gear. This is used for slower riding, hill climbing, or to
allow for easier pedaling. It is recommended to start off in this
gear and move through the gears as speed increases as needed,
or comfortable.
Using the Front Shifter
Note: Not all models have a front shifter. The front (left) shifter
will have an indicator that reads either low to high or a series of
numbers from 1 and up. Low or "1" is the lowest gear. The front
shifter acts much like the rear shifter, but the change between
gears is greater. This means that one shift at the rear derailleur
will be a subtle change in pedaling speed, but one shift at the
front derailleur will be a large change in pedaling speed. Think of
the front shifter as a range; low and high or low, medium, and
high. Low is used for slower riding, hill climbing, or to allow for
easier pedaling. It is recommended to start off in this gear and
move through the gears as speed increases as needed, or
comfortable.
To Use the Trigger-style Shifter
Rear shifter: Use your index finger to shift up to a higher gear,
and your thumb to shift down to lower gear.
Left shifter: Use your index finger to shift down to a lower gear,
and your thumb to shift up to higher gear. Figure 5.3
To Use the Twist-style Shifter
Turn the area of the handlebar grip closest to the gear numbers
to the desired gear level. Figure 5.4
Trigger-style Shifter
Front shifter
Pull down with index
finger to shift gears
Twist-style Shifter
Front shifter
Twist to change
gear level
Use 5
Rear shifter
Push in with thumb
to shift gears
Figure 5.3
Rear shifter
Figure 5.4
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