Northstar
Explorer 660
Installation and Operation Manual
54
These features can be used only when the optional
single or twin engine fuel kit has been installed. Press
MENU
once or more until the
Setup
menu is
displayed, then select
Fuel
:
!
WARNING
Northstar fuel kits are only suitable for
petrol/gasoline engines. Fuel consumption
can change drastically depending upon the
boat loading and the sea conditions. Always
carry adequate fuel for the journey, plus
a reserve.
It is recommended that the fuel tank capacity is
measured by draining the fuel tank, then filling it
to capacity. After filling, note the reading from the
fuel dispenser’s gauge.
Note:
Beware of air pockets, especially in underfloor
tanks.
Tank full
Select
Tank full
each time the fuel tank(s)
are completely refilled. When asked
Are you
sure?
select
Yes
. Otherwise, the Fuel display
and the Low Fuel Alarm are meaningless.
Set remaining
Before
doing a partial refill of the tank or removing
fuel manually from the tank (for example, by
siphoning it off):
1. Note
the
Remaining
reading on the Fuel
display.
2. Note how much fuel is added or removed.
3. Calculate how much fuel is now in the tank.
4. Select
Set remaining
and update the
reading.
It is essential to do this whenever some fuel is
added or removed. Otherwise, the Fuel display
and the Low Fuel Alarm are meaningless.
15-5 Setup > Fuel
Clear Used
Select
Clear used
to set
Used
(the amount
of fuel used) to zero. Do this to start measuring
the amount of fuel used over a certain time or
distance.
When asked
Are you sure?
select
Yes
.
Tank size
Enter the capacity of the fuel tank.
Num. engines
Set the number of engines to
0
,
1
or
2
. If
0
is
selected the fuel features are turned off.
Calibrate
See section 15-11 Setup > Calibrate, for information
about calibrating the fuel transducer(s).
Flow filter
Most engines do not draw fuel from the tank at a
steady rate. To give a stable fuel flow reading, the
Explorer 660 calculates the flow value(s) by taking
several measurements and averaging them. Use
the Flow filter to set the period over which the
fuel flow is averaged.
The Flow filter can be set from
0
to
30
seconds.
Use the lowest value which gives a stable flow.
Usually a value of 5 to 10 seconds will give a
satisfactory result for two-stroke carburettor
engines. Fuel injected or four-stroke engines may
require a larger value.
This setting affects the
Fuel flow
and
Fuel
economy
reading on the Fuel display but it does
not affect the
Fuel used
reading.