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Jabiru Aircraft
Pty Ltd
Installation Manual
Jabiru 3300 Aircraft Engine
REVISION
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Dated : 1
st
Dec 2016
Page: 12 of 56
2
Controls
This section comprises of the mechanical controls and electrical switches.
2.1
Throttle and Choke
The throttle and choke cables both attach to the cable mount arm fitted to the carburettor.
Note: Since a pressure compensating carburettor is used there is no mixture control.
The cables for the choke and throttle can be adjusted using the adjuster screws and nuts shown in Figure 7.
A 7mm spanner is required.
The cables used must have an adequate radius wherever they turn a corner. Bending the cables too sharply
will increase the cable friction, making it difficult to use the control accurately. This is a particular problem
for the throttle cable as it will make setting the idle accurately very difficult.
All Jabiru engines are run-in on a Dynamometer before delivery. It is impossible to accurately set the idle
RPM when the engine is on the dynamometer, so the Idle Stop Screw (shown in Figure 7) must be adjusted
as a part of the engine installation process.
Figure 7. Choke and Throttle Connections to Carburettor
2.2
Ignition & Starter Systems
The only electrical controls for the Jabiru Engine are the ignition switching and the start button.
The ignition switches and starter system wiring are connected as shown by the circuit diagram, Figure 27.
Section 4 gives details of the electrical systems for the engine.
Throttle Cable connected
to throttle arm
Choke Cable connected
to throttle arm
Cable mount bracket
Adjustors to fine tune choke
and throttle operation
Idle stop screw