Suzuki GSX-R150 Owner's Manual page 93

After moving the side stand to the fully up
position, squeeze the clutch lever in and
pause momentarily. Engage first gear by
depressing the gearshift lever downward.
Turn the throttle grip toward you and at the
same time release the clutch lever gently
and smoothly. As the clutch engages, the
motorcycle will start moving forward. To shift
to the next higher gear, accelerate gently,
then close the throttle and squeeze the
clutch lever in simultaneously. Lift the front
end of gearshift lever upward or depress the
rear end of gearshift lever to select the next
gear and release the clutch lever and open
the throttle again. Select the gears in this
manner until top gear is reached.
 WARNING
Sudden side winds, which can occur
when being passed by larger vehicles, at
tunnel exits or in hilly areas, can cause
you to lose control of the motorcycle.
Reduce your speed and be alert to the
possibility of sudden side winds.
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