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Jabiru Aircraft
Pty Ltd
Installation Manual
Jabiru 3300 Aircraft Engine
REVISION
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Dec 2016
Page: 29 of 56
Figure 30. Carburettor Intake & Balance Tube Detail
5.5.1
Carburettor Operation
Figure 31. Carburettor Schematic
Idle circuit inlet aperture
Needle carrier
Needle
Atomiser
Needle Jet
Jet Carrier
Idle Jet
Air density sense port
Air density sense port
Diaphragm
Diaphragm spring
Balance tube
nipple
Sense ports
Fuel inlet
nipple
Sense port
Air filter
Correct location for balance tube
connection
– on “Clean” side of air
filter in an area where the air is
relatively slow moving.
Poor location for
balance tube