NorthStar Navigation EXPLORER 657 Manuel D’Utilisation

51

Northstar Explorer 657 Installation and Operation Manual

Calibrate petrol/gasoline fuel flow sensors 
during installation, or if the fuel readings seem 
inaccurate and the other troubleshooting 
suggestions do not help (see appendix B 
troubleshooting).

  

SmartCraft™ fuel sensors are factory 
calibrated and should never need 
recalibrating.

  

On a multi engine boat, calibrate each 
engine’s sensor. This can be done at the same 
time with a portable tank for each engine or 
at different times using one portable tank.

  

Calibrating a sensor requires accurate 
measurement of the fuel consumption. 
This is best done using a small portable tank. 
At least 4 gallons (15 litres) of fuel should be 
used to ensure an accurate calibration.

  

It is often very difficult to fill underfloor tanks 
to the same level twice due to air pockets, so 
the more fuel used, the more accurate the 
calibration.

To calibrate the sensor(s):

1   Record the level of the fuel in the tank(s).

2   Connect the portable tank(s) to the engine 

through the fuel sensor(s).

3   Run the engine at normal cruising speed until 

at least 4 gallons (15 litres) of fuel has been 
used per engine.

4   Check the actual amount of fuel used per 

engine by refilling the portable tank(s) to the 
original level and noting the reading(s) of the 
fuel dispenser’s gauge.

5   Press 

 twice, select Fuel then select 

Setup engines.

6   On a single engine boat, select Calibrate 

and change the displayed value to be equal 
to the reading of the fuel dispenser’s gauge, 
then press 

.

 

On a multi-engine boat select the engine. 
Select Calibrate and change the 
displayed value to be equal to the reading of 
the fuel dispenser’s gauge, then press 

. 

Repeat for the other engines.