Genesis Children's bike, Original Instruction Manual

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Lever (B) two way release
Changing from a larger to a smaller rear sprocket (Lever B)
Lever (A): Changing to a larger gear rim.
Lever (B): Changing to a smaller gear rim.
Lever (a): Changing to a larger chain ring.
Lever (b): Changing to a smaller chain ring.
All levers return to their original position when
released.
This example explains how to operate the gear
lever.
Lever B
Rear Front
Lever b
Lever A Lever a
Source: Shimano ® techdocs
Lever A
Lever B
SRAM racing bike shifters are operated differ-
ently. The following example is applicable to a
RED shifter:
The shifter behind the right brake lever moves
the chain to the back gear wheels. Changing
gear with short switch travel moves it to the small
sprockets and with long switch travel to the large
sprockets.
The shifter behind the left-hand brake lever
moves the chain onto the small chain wheel
with short switch travel and onto the large chain
wheel with long switch travel.
Source: SRAM ®
A combination of hub and derailleur gears
This type of gear system is made by SRAM and
provided under the name of “Dual Drive”. This type
of gear system has a three gear hub and an addi-
tional sprocket for common derailleur systems. An
advantage to this is that one of the front derailleurs
drops out which lowers the chain’s skew.
A thumb switch is used to operate the hub gear
components. The derailleur system is operated
with a twist grip and the latest version uses a trig-
ger switch.
The precise procedure on how to assemble,
or put on and remove the rear wheel is explained
in the manufacturer’s instruction manual includ-
ed with your bike.
Thumb switch
Twist grip
Automatic gear shift
This is a continuously variable shifting system
which allows the biker to either change gears
manually or automatically.
Using the twist grip, select the automatic mode
and choose the pedal cadence at which you’d like
to ride; the Harmony system will take care of the
rest. The drive will automatically and continually
adapt to the gear transmission ratio, allowing you
to always keep your preferred pedal cadence.