See
Figure 1 (vent shown in closed position). Vehicles are equipped with a vent in the upper dash for ventilation. The vent can be adjusted to optimize airflow to the rider and to minimize wind buffeting. Keeping the vent open will reduce turbulence.
NOTE
For best results, begin with vent open in middle position then adjust for desired airflow.
Open: Rock the lever (1) up to open the vent (2).
Close: Rock the vent lever down to close the vent.
Figure 1. Fairing Splitstream Vent