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Set remaining
Before doing a partial refill of the tank or remov-
ing 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 read-
ing on the Fuel display (see section 5-6 Fuel
Display) and the Low Fuel Alarm (see section
3-5 Setup > Alarms) are meaningless.
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 3-8 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
fishfinder 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.
For twin engine installations, the fuel flow for each
engine must be adjusted separately.
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 (see section
5-6 Fuel display) but it does not affect the Fuel
used reading.
Speed Source
Select speed input from water speed transducer or
external GPS source (an external GPS source must
be connected to the Fishfinder via NavBus or NMEA
comms – see section 3-7 Setup > Comms.)
3-4 Setup > Logs
Press MENU one or more times until the Setup
menu is displayed, then select Logs:
The values can be changed independently of
each other. These log values are saved when
the unit is turned off.
Reset trip dist
This resets the trip distance to zero.
Reset total dist
This option resets the total distance to zero.
Reset engine hours
Use this option to reset the engine hours to
zero. This can be useful after an engine service
or to count the engine hours between service
intervals.
FISH 4500/4600 Installation and Operation Manual 11
NAVMAN