Operating Instructions and Installation Instructions
191 
To set Volume units: 
1. Press 
MENU|MENU, select System Setup and press ENT. UNITS OF MEAS-
URE
 will be highlighted, so press ENT. 
2. Highlight 
VOLUME and press ENT. 
3. Use ↑ ↓ to select one of the following options: Gallons or Liters. Press 
ENT. 
4. Press 
EXIT repeatedly to return to the sonar display. 
To set Heading units: 
1. Press 
MENU|MENU, select System Setup and press ENT. UNITS OF MEAS-
URE
 will be highlighted, so press ENT. 
2. Highlight 
HEADING and press ENT. 
3. Use ↑  ↓ to select one of the following options: True or Magnetic. 
Press 
ENT. 
4. Press 
EXIT repeatedly to return to the sonar display. 
The Units of Measure Menu. 
To set Speed/Distance Unit of Measure: Press ↑ or ↓ to change the 
Speed/Distance, then press 
ENT. After the option is set, press 
EXIT|EXIT|EXIT to return to the page display. 
To set Heading: Press ↑ or ↓ to change the heading type, then press 
ENT. After the option is set, press EXIT|EXIT|EXIT to return to the page 
display. 










