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Rotax 914 series User Manual

Rotax 914 series
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Effectivity: 914 Series BRP-Powertrain page 7-4
OM Edition 2 / Rev. 0 April 01/2009
d04479.fm
7.2) Fuel system
General note See Fig. 2
Fuel The fuel flows from the tank (1) via a filter/water trap (2) to the two
electric fuel pumps (3) connected in series. From the pumps fuel
passes on via the fuel pressure control (4) to the two carburetors
(5).
NOTE: Parallel to each fuel pump a separate check
valve (6) is installed.
Fuel pressure con-
trol
The fuel pressure control ensures that the fuel pressure is always
maintained approx. 0.25 bar (3.63 psi) above the variable boost
pressure in the “airbox“ (8).
Return line
Via the return line (7) surplus fuel flows back to the fuel tank.
NOTICE
The return line must not present flow resis-
tance. Pay attention to possible constriction
of diameter or obstruction, to avoid overflow-
ing of carburetors.

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Rotax 914 series Specifications

General IconGeneral
Bore79.5 mm
Stroke61 mm
Compression Ratio9.0:1
Cooling SystemLiquid-cooled cylinder heads, air-cooled cylinders
Redline5800 rpm
Engine Type4-cylinder, 4-stroke
Fuel TypeAvgas 100LL
Oil SystemDry sump
Fuel Systemfuel injection
TBO (Time Between Overhauls)2000 hours
Displacement1.211 liters (1211 cc)
Power Output84.6 kW (115 hp) at 5, 800 rpm

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