Rotax 914 series User Manual

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.

WARNUNG
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.

Rotax 914 series Specifications

General

Bore	79.5 mm
Stroke	61 mm
Compression Ratio	9.0:1
Cooling System	Liquid-cooled cylinder heads, air-cooled cylinders
Redline	5800 rpm
Engine Type	4-cylinder, 4-stroke
Fuel Type	Avgas 100LL
Oil System	Dry sump
Fuel System	fuel injection
TBO (Time Between Overhauls)	2000 hours
Displacement	1.211 liters (1211 cc)
Power Output	84.6 kW (115 hp) at 5, 800 rpm