Northstar
FISH 457/467
Installation and Operation Manual
31
Range
The estimated boat range at the current fuel flow. The value can depend on the type of speed sensor
(see section 7-5).
Economy
The distance travelled per unit of fuel used. The value can depend on the type of speed sensor (see
section 7-5). 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 7-6).
7-3 When you add or remove fuel
When you add or remove fuel, you must tell
the 457/467, 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.
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
and
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.
