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Aircraft Service Manual
Jabiru Aircraft
Pty Ltd
JTM001-1
J120, J160, J170, J200/J400, J230/J430, J250/J450 Variants
REVISION
1
Dated: Nov 2011
Issued By: SW
Page: 55 of 233
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Remove the fuel drain from each fuel tank at a time and drain the fuel out this way. This method
is faster than the previous but has the potential for spilling a lot of fuel. You also still need to
drain fuel from the header tank via the engine fuel line.
If the fuel has been drained out using the wing fuel drains then a small amount of fuel needs to be
added to replace the unusable fuel. Add 1.5L to each wing tank to replace the unusable fuel. Note
that this does not need to be done if the fuel was drained by method 1. Check that the fuel drains
are not leaking after re-installation.
Next all the fuel lines from each tank need to clamped off so that fuel does not flow between tanks or
to the header tank. Use fuel line clamps as shown in Figure 24.
Figure 24
– Fuel Line Clamps
Before starting the fuel gauge calibration the aircraft must be laterally (left & right) level. See the
Flight manual for the levelling datums.
When ready to start the fuel calibration turn the EMS on and do as follows.
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Enter the EMS menu by pressing any button below an EMS main page and pressing MORE >
SETUP > MORE > FUEL. You are presented with the screen shown Figure 25. The menu
reflects the number of fuel tanks selected in the Global Parameters Setup. If you do not see the
correct number of tanks here, go back to the GLOBAL section of the SETUP menu and set the
correct number of tanks.
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Repeat the following steps for each tank you wish to calibrate:
Use the DO
WN▼ or UP▲ buttons to select the tank that you wish to calibrate, and press
SEL►.
Enter the approximate number of gallons or liters the tank can hold (Figure 26, left). In
this case it is 65L. Press NEXT.
Once you have confirmed that the tank you are calibrating is empty, press START (Figure
26, right).
Follow the on-screen instructions until the completion of your fuel calibration. Be aware
that if you make a mistake you can only totally clear the calibration for that tank - so you
have to start the calibration for that tank at the beginning again.
At the completion of your fuel level calibration, the EMS-D10 will present you with a table
of values in the format “pour #: mV gallons/liters”. If you wish, record these numbers for
later reference, however there is no way of entering them into the EMS so it is not
required.
Repeat this procedure for the other fuel tank.
CAUTION
There is often a degree of friction within the gauge sender. Tap gently with a finger after adding
fuel to maximise accuracy of reading.