FORD 2013 F-550 v.1 - Manual (Page 136)

AM/FM
WARNING: Driving while distracted can result in loss of vehicle
control, accident and injury. Ford strongly recommends that you
use extreme caution when using any device or feature that may take
your focus off the road. Your primary responsibility is the safe operation
of your vehicle. We recommend against the use of any handheld device
while driving, encourage the use of voice-operated systems when
possible and that you become aware of applicable state and local laws
that may affect use of electronic devices while driving.
A. CLK: Press this button to switch the display between the clock and
radio frequency. To set the time:
1. Press and hold CLK until the hours start to flash.
2. Press the arrow buttons to adjust the hours. Repeat Steps 1 and 2 to
set the minutes.
3. Press CLK again to exit clock mode.
B. Tune: Press these arrow buttons to manually search through the radio
frequency band. Press and hold for a fast search. In AUDIO mode, press
the buttons to adjust different sound settings.
C. AUDIO: Press this button to access settings for Treble, Middle, Bass,
Fade and Balance.
CLK
AUDIO
C
E
G
F
B A
D
Audio System 135
2013 F-250/350/450/550 (f23)
Owners Guide gf, 1st Printing
USA (fus)