At Mode; S Mode (At) - Honda NC750X Manual

Shifting Gears
AT MODE: In this mode the gears are
shifted automatically according to your riding
conditions.
And also using the shift up switch (+) or shift
down switch (−), you can temporarily shift up
or down in AT MODE by using the shift
switch. These switches are convenient when
you want to temporarily down-shift in front
of a curve, etc.
(P.67)
You can choose between two modes within
AT MODE: D mode and S mode.
D mode (AT): This is the standard mode
when AT MODE is selected. Select D mode
for regular operation and efficient fuel
economy.
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S mode (AT): Select this mode while riding
in AT MODE when you need more power,
such as when overtaking, climbing hills,
pulling away.
S mode has three levels of adjustment.
MT MODE: MT MODE (6-speed manual
operation) You can choose between 6 gears
in this mode.