Rotax 912 i series Operator's Manual

Effectivity: 912 i Series BRP-Powertrain page 7-4
OM Edition 1/Rev. 0 January 01/2012
d05871.fm
7.2) Fuel system
General note See Fig. 2.
Fuel The fuel flows from the tank (1) via a fine filter (4) to the electric
fuel pumps (2,3) from where it is then pumped to the fuel rail, the
fuel injectors and to the fuel pressure regulator (5).
Fuel pump switch-
es
The fuel pumps are activated directly through the switch OFF/ON.
During take off both switches (main and aux.) must be ON.
Fuel pressure reg-
ulator
A fuel pressure regulator ensures that the pressure differential be-
tween the fuel injectors and the intake manifold remains constant.
This enables the fuel injection system to inject the same quantity
of fuel at any point given the same injection period.
Return line Through the return line surplus fuel flows back to the fuel tank and
suction side of fuel system.
NOTE: The return line must be always returned into the
tank, from which fuel is sucked in to the oil
pump.

Rotax 912 i series Specifications

General

Number of Cylinders	4
Max Power	100 hp (73.5 kW)
Max Power Output RPM	5800 rpm
Ignition System	Dual electronic ignition
Oil System	Dry sump, forced lubrication with separate oil tank
Reduction Gear Ratio	2.43:1
TBO	2000 hours
Engine Type	4-stroke, horizontally opposed
Displacement	1352 cm³
Bore x Stroke	84 mm x 61 mm
Max Torque	128 Nm
Fuel Type	Avgas 100LL or unleaded automotive gasoline
Fuel System	Electronic fuel injection
Cooling System	Liquid/air-cooled