NAVMAN
8120/8084
Installation and Operation Manual
49
13 Fuel functions and display
The Fuel functions require optional petrol/gasoline, diesel or SmartCraft fuel sensors to be
installed and set up.
Each engine has a flow sensor installed to
measure the engine’s fuel flow.
The 8120/8084 use these flows, together with
boat speed and engine RPM if available to
estimate the fuel remaining in the tank(s),
fuel used, range and fuel economy. This data
is displayed on the fuel display (see section
13-2).
You can:
display the fuel used during a trip
(see section 13-2)
set low fuel alarms (see section 13-4)
make fuel consumption curves - graphs
of fuel consumption and boat speed as a
function of engine RPM - to monitor and
optimize boat performance.
(see section 13-6)
13-2 Fuel display
To go to the Fuel display, press
DISPLAY
, select
More
, then select
Fuel
.
The display differs according to the number
of engines and tanks. If engine RPM is
available and if you have made and selected
a Fuel Consumption Curve (see section 13-6),
press to switch between a Summary or a
Fuel curve display.
The Fuel display shows
Speed
To select a boat speed sensor, see section
13-5-1.
RPM (if available)
If engine RPM is not available, the display
shows depth.
13-1 What the fuel computer does
!
WARNING
To ensure the fuel data is accurate:
When you add or remove fuel from a
tank, tell the 8120/8084 (see section
13-3)
If the boat has petrol/gasoline sensors,
calibrate them during installation or if
the fuel readings seem inaccurate (see
section 13-7)
Choose an appropriate type of
boat speed sensor or GPS source to
calculate economy, range and the fuel
consumption curve (see section 13-5)
If the boat uses a paddlewheel sensor
to measure speed, calibrate it during
installation or if the speed readings
seem inaccurate.
Fuel display
