When You Add Or Remove Fuel - NorthStar EXPLORER 557 Installation And Operation Manual

Fuel window

10-3 When you add or remove fuel

When you add or remove fuel, you must tell
the 557/567, otherwise the fuel data will be
meaningless.
A When you completely fill a tank
Go to the fuel window and press
Then:
On a single-tank boat, select Fill tank.
On a multi-tank boat, select Fill tank,
then select the tank you have filled.
Note: Underfloor fuel tanks are often difficult to
refill to the same level twice, due to air pockets.
With underfloor fuel tanks:
Trim the boat to the same angle in the water
each time you follow procedure A.
Mostly use procedure B below when adding
fuel, but completely fill the tank and follow
procedure A about every tenth time you add
fuel.
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Northstar Explorer 557/567 Installation and Operation Manual
Range
The estimated boat range at the current fuel
flow. The value can depend on the type of speed
sensor (see section 10-5).
Economy
The distance travelled per unit of fuel used. The
value can depend on the type of speed sensor
(see section 10-5). The larger the value, the better
the fuel economy. Adjust the throttle and trim to
achieve the best economy.
Fuel consumption curve
A graph of fuel consumption and boat speed
as a function of engine RPM. Use the curve to
monitor and optimise boat performance (see
section 10-6).
B When you partially fill a tank
1 Add fuel to a tank and write down how much
fuel you add.
2 From the Fuel window, press
select Add fuel.
3 On a multi-tank boat, select the tank that you
have added fuel to.
4 Change the number to the amount of fuel
that you added.
Note: If you follow procedure B every time you
add fuel, then a small error will accumulate,
because it is hard to measure exactly how much
fuel you add. To avoid this, completely fill the tank
and follow procedure A about every tenth time
you add fuel.
C When you remove fuel
1 Before removing fuel, go to the Fuel window,
press and select Set remaining.
2 On a multi-tank boat, select the tank that you
are removing fuel from.
3 Write down the value of Remaining for the
tank; this is the amount of fuel originally in
the tank.
and