Changing data
First press 
or 
to move the highlight to the data to change, then:
a)To change a tick box 
means On or Yes 
means Off or No.
Press 
or 
to change the tick box.
b)To select an option
1Press 
to display the menu of options.
2Press 
or 
to move the highlight to the
option you want, then press 
.
c) To change a name or number:
1Press 
to display the name or number:
2Press 
or 
to select a letter or digit to change. Press 
or 
to change the letter or digit.
Repeat this to change other letters or numbers.
3Press 
to accept the new value. Or press 
to ignore the changes.
d ) To change a slider value
Press 
to decrease the value or 
to increase the value.
2-2 Turning on and off / auto power
Turning on manually | Auto power |
If the 657 is not wired for auto power, press 
to turn the unit on. If necessary, adjust the display to be easy to read (see section
Note: If the 657 is not wired for auto power then the 657 does not record engine hours and might not record fuel consumption (see section
Turning off manually
If the 657 is not wired for auto power or if the ignition switch is off, hold down 
until the display turns off.
If the 657 is wired for auto power (see section
•The 657 automatically turns on when you turn the boat’s ignition switch on.
•You can not turn the 657 off while the ignition switch is on.
•If Auto power off (see section 
, the 657 automatically turns off when you turn the boat’s ignition switch off.
•If Auto power off (see section 
, the 657 stays on when you turn the boat’s ignition switch off. You can now turn the 657 off manually.
Northstar Explorer 657 Installation and Operation Manual | 11 |