Mercury 1999 Mountaineer Owner's Manual page 46

Controls and features
Setting the clock
To set the hour, press and hold the
CLK control and press:
to decrease hours and
to increase hours.
To set the minute, press and hold
the CLK control and press:
to decrease minutes and
to increase minutes.
46
SCN
CLK
SEEK SEEK
TUNE TUNE
SCN
CLK
SEEK SEEK
TUNE TUNE