Ford F-650 2001 Owner's Manual page 68

Controls and features
Do not use the speed control in heavy traffic or on roads that
are winding, slippery, or unpaved.
Caterpillar/Cummins engines
Press SET +. If the vehicles is moving, this will set the vehicle speed. If
the vehicle is stationary, this will set the vehicle idle RPM.
If you drive up or down a steep hill, your vehicle speed may vary
momentarily slower or faster than the set speed. This is normal.
Speed control cannot reduce the vehicle speed if it increases above the
set speed on a downhill. If your vehicle speed is faster than the set
speed while driving on a downhill, you may want to shift to the next
lower gear or apply the brakes to reduce your vehicle speed.
If the vehicle speed falls below 48 km/h (30 mph) or engine RPM falls
below 1 000 RPM, your speed control will disengage. This is normal.
Pressing RESUME - will re-engage it.
Do not use the speed control in heavy traffic or on roads that
are winding, slippery, or unpaved.
To set a higher set speed-except Caterpillar/Cummins engines
• Press and hold SET ACCEL.
Release the control when the
desired vehicle speed is reached
or
• Press and release SET ACCEL to
operate the Tap-Up function.
Each press will increase the set
speed by 1.6 km/h (1 mph) or
• Accelerate with your accelerator
pedal. When the desired vehicle
speed is reached, press and release SET ACCEL.
You can accelerate with the accelerator pedal at any time during speed
control usage. Releasing the accelerator pedal will return your vehicle to
the previously programmed set speed.
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