Rotax 912 i Series Installation Manual page 109

The wire construction must be a shielded twisted pair cable (STP, 40x
Wire construction
twisted per meter) to meet the requirements of the EMC Directive (elec-
tromagnetic compatibility).
Tip
Effectivity: 912 i Series
Edition 1/Rev. 2
BRP-Powertrain
INSTALLATION MANUAL
In case of supply problems of the fuel pump, the fuel
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tank should be emptied and filled with AVGAS. If the
problem does not occur at the next test (with AVGAS),
then this is a sign of formation of vapor bubbles when
using MOGAS (or auto fuel).
Tips that will have a favorable impact on the installa-
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tion of the 912 iS/iSc:
- Single tank (large volume of fuel in the tank, just a
few fuel lines)
- Catchtanks in the wing tanks. This provides the fuel
supply in every flight situation/position
Headertank (the following reference values should be
considered):
- Tank should be made of light metal
- Tank volume at least 5 l (1.32 US gal)
- A sump should be integrated into the headertank
- Provide connection for a "Low Fuel" sensor
- The venting line from header tank to wing tank
should generally be on an incline to avoid trapping
bubbles. The venting line must have an inner dia-
meter of at least 12 mm (0.50 in)
- Fuel feed lines from the wing tanks to the header
tank should be on a steady decline
Information about properties which have proved unfa-
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vorable impact on the installation of the 912 iS/iSc:
- Fuel lines smaller than 7.5 mm (0.30 in)
(AN-6 or 3/8") of inner diameter
- Multi-tank systems without Catch-, Headertank
- Coarse or fine filter not in use
- Fuel cock position on the pressure side of the fuel
system (after the fuel pump module)
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Page 13
January 01/2014