Northstar
FISH 457/467
Installation and Operation Manual
40
8-3 Setup > Fuel
Fuel consumption can change drastically
depending upon the boat loading and the sea
conditions. Always carry adequate fuel for the
journey, plus a reserve.
!
WARNING
Fuel functions require optional fuel flow sensors
to be installed. Press
twice, then select
Fuel:
Source
Select the fuel flow sensors to use if the boat
has more than one set of fuel sensors. Normally
select
Auto
.
Num engines
Set the number of engines, or select
0
to disable
the fuel functions. If there are two engines they
are called port and starboard.
Num tanks
Set the number of fuel tanks. If there are two
tanks they are called port and starboard.
Setup engines
If the boat has more than one engine, select
Engine and select each engine in turn.
For the selected engine, you can enter:
From tank:
The fuel tank the engine is
connected to.
Flow filter:
Most engines do not draw fuel from
the tank at a steady rate. To give a stable fuel
flow reading, the instrument calculates the flow
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 window but it does
not affect the Fuel used reading.
Pulse power
This can be used to specify the power output
of the transmitted ultrasonic pulse. Low power
output conserves the battery and produces a clear
display in shallow water.
There is a choice of
Auto
,
Low
,
Medium
or
High
. The
Auto
setting is recommended.
!
WARNING
Care must be taken when altering the pulse
length and pulse power settings. Incorrect use
could lead to a loss of depth readings in some
circumstances.