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standard fluid level gauges. If, however, the tank has an irregular 

shape or greater accuracy is needed, calibration is recommended.  
The default calibration for the EP-10 Fuel Flow and Suzuki Engine 

Interface are adequate in most cases, but if Fuel Used readings are off 

by more than 3 percent, calibration is recommended. 

The default calibration for an EP-10 Fuel Flow is adequate in most 

cases, but if fuel used readings are off by more than 3 percent, 

calibration is recommended.  
Fuel Flow Accuracy 
To check fuel flow accuracy, add the Fuel Manager page or any of the 

digital gauge pages to the page screen rotation, then customize the 

selected page with Fuel Used data. To see instructions on how to Add 

Pages and Customize Pages, refer to the Operation Section.  
NOTE: 

Make sure the fuel flow has been set as the Fuel Remaining Source, 

otherwise, you will not be able to calibrate the fuel flow. See Fuel 

Remaining Source instructions on page 28.  

After filling up your tank, take your vessel out on the water and burn 
at least five gallons of fuel. Be sure you run only ONE engine — 
the engine attached to your fuel flow.  
Fill up your tank again, noting how much fuel you added to the tank. 

Compare that number to the Fuel Used figure displayed on the page 

you customized. If the amount of fuel you added to the tank and the 

fuel used figure are off by more than 3 percent, we recommend the fuel 

flow be calibrated. 
NOTE: 

You must use the gauge's Refill Tank command when filling your 

fuel tank to keep the fuel flow updated with correct information on 

the amount of fuel in the tank. 

Refill Tank 
You must use the Refill Tank command every time you fill up and 

every time you calibrate a fuel flow to make sure the fuel flow reads the 

tank as full. For more information on the Refill Tank function see page 

26. 
To calibrate an EP-10 Fuel Flow: 
Add the Fuel Manager page or any of the digital gauge pages to the 

page screen rotation then customize the selected page with Fuel Used 

data. To see instructions on how to Add Pages and Customize Pages, 

refer to the Operation Section.