Garmin GPSMAP 4008 Owner's Manual page 53

Fuel Gauges
A maximum of two fuel gauges, an upper gauge and a lower gauge, appear above and below the speedometer
in the center of the Fuel Gauges page. You must have fuel level sensors in your fuel tanks or a fuel flow sensor
to capture the data shown in the fuel gauges.
If you use only a fuel flow sensor, the amount of fuel onboard is the estimated fuel level, and it is based on the
total tank size, the recorded amount of fuel in the tanks, and the fuel flow rate.
The number and configuration of fuel gauges that appear is based on the number and type of onboard fuel data
sensors, as shown below.
0 Fuel Flow Sensors No fuel gauges appear.
1 or More Fuel Flow
Sensors
Viewing Fuel Gauges
To view fuel information, your chartplotter must be connected to an external fuel sensor, such as the Garmin
GFS 10.
™
1. From the Home screen, select information > engines.
2. Move from the engine gauge screens to the fuel gauge screen:
• For the GPSMAP 4000 series, use the Rocker.
• For the GPSMAP 5000 series, select the left and right arrows at the top of the page.
Customizing Gauge Limits
See "Customizing Engine and Fuel Gauge Limits"
Activating and Customizing Gauge Alarms
See "Activating Engine and Fuel Gauge Status Alarms"
Gauge Status Alarms"
Synchronizing Fuel Gauge Readings with Fuel Levels
1. From the Home screen, select information > engines > Menu.
2. Complete an action:
• Select Fill Up All tanks when your tanks are full. The fuel level is reset to maximum capacity. Adjust
if necessary.
• Select Add Fuel to Boat when you have added less than a full tank. Enter the amount of fuel added.
Select Done. An estimate of the fuel added appears. Adjust if necessary.
• Select Set total Fuel onboard to specify the total fuel in your tanks. Enter the fuel amount. Select
Done.
Selecting a Fuel Economy Data Source
1. From the Home screen, select information > engines > Menu > Gauge Setup.
2. Indicate the source of the speed data that is used to calculate the fuel economy:
• Select Fuel economy > GPS Speed.
• Select Fuel economy > Water to use data from a speed wheel.
Trip Gauges
Viewing Trip Gauges
Trip gauges show information for odometer, speed, time, and fuel for your present trip.
From the Home screen, select information > trip.
GPSMAP 4000/5000 Series Owner's Manual
®
0 Fuel Level Sensors
1 fuel gauge appears with
estimated fuel level.
(page 47).
Almanac, Environmental, and On-boat Data
1 Fuel Level Sensor
1 fuel gauge appears.
1 fuel gauge appears.
(page 47).
(page 47) and "Customizing Engine and Fuel
2 or More Fuel Level Sensors
2 fuel gauges appear.
2 fuel gauges appear.
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