Furuno FAR-2107 - Manual (Page 144)

3. ARP OPERATION
3-12
3.7.5 Auto target track (A, B, C and W types)
You may “reuse” ARP target numbers 1-15 when an ARP target having one of
those target numbers becomes a lost target.
1. Roll the trackball to choose the MENU box at the right side of the screen and
then push the left button.
2. Roll the wheel to choose 5 PLOTTER and then push the wheel or the left
button.
3. Roll the wheel to choose 0 AUTO TARGET TRACK and the push the wheel
or left button.
4. Choose OFF or ON as appropriate and then push the wheel.
5. Push the right button several times to close the menu.