To change the set speed, operate the lever until the desired set speed is displayed.
Fine adjustment: momentarily move the lever in the desired direction.
Large adjustment: hold the lever in the desired direction.

In the vehicle-to-vehicle distance control mode, the set speed will be increased or decreased as follows:
In the constant speed control mode , The set speed will be increased or decreased as follows:
Fine adjustment: by approximately 1 mph (1.6 Km/h) each time the lever is operated large adjustment: the set speed can be increased or decreased continually until the lever is released.
Setting the vehicle speed (vehicle-to-vehicle distance control
mode)
Changing the vehicle-to-vehicle distanceWheels
If a wheel is bent, cracked or heavily corroded, it should be
replaced. Otherwise, the tire may separate from the wheel or
cause a loss of handling control.
Wheel selection
When replacing wheels, care should be taken to ensure that they are
equivalent to those removed in load capacity, diameter ...