Rotax 912 Series Service Manual

Effectivity 912/914 Series
Edition 1 / Rev. 0
page 13
May 01/2007
d02623
73-00-00
BRP-Rotax
Maintenance Manual
On its way from the float chamber to the venturi, the fuel passes through the
main jet (7), the mixing tube and the needle jet and in the diffuser tube (8) is pre-
mixed with air which is brought in from the air filter via the air duct (9) and the
atomizer in an annular flow around the needle jet. This air flow assists the
atomizing process and favors fuel distribution in the manifold.
The jet needle (10), which is responsible for part load, is kept in the defined
position by the retaining clip (11).
14
13
11
9
16
4
15
8
10
12
1
3
6
7
5
2
02931
Fig. 73-6

Rotax 912 Series Specifications

General

Redline	5800 rpm
TBO	2000 hours
Displacement	1211 cc
Bore	79.5 mm
Stroke	61 mm
Power Output	80 hp (59.6 kW)
Compression Ratio	9.0:1
Fuel Type	Avgas 100LL
Ignition System	Dual electronic ignition
Fuel System	Fuel Injected
Oil System	Dry sump
Engine Type	4-cylinder, horizontally opposed, 4-stroke