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Setting Gear Ratio
1.
Begin with one battery removed from the com-
puter.
2.
Insert the battery while pressing and holding any
of the four buttons on the front of the comput-
er. The display will now show the maintenance
screen.
3.
Press the Set button ( ) three times and “GrA-
tio” should be displayed in the middle readout.
The currently selected gear ratio should be blink-
ing in the lower readout.
4.
Use up ( ) or down ( ) to select the
gear ratio and Set ( ) to confi rm selection.
5.
Use the matrix below to determine which gear setting to use:
BIKE:
GEAR RATIO:
IC Pro + IC Pro20
1:3.2
AC Sport (Chain) + AC Performance Plus (Chain):
1:4.5
AC Sport (Belt) + AC Performance Plus (Belt):
1:A.65
6.
After pairing AND setting the gear ratio, install
the 3rd battery and reinstall the battery cover.