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Engine Overhaul Manual
Jabiru Aircraft
Pty Ltd
Jabiru 2200 & 3300 Aircraft Engines
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Dated : 28/10/2014
Issued By: AS
Page: 95 of 201
L:\files\Manuals_For_Products\Engine_Manuals\Overhaul_Manual\JEM0001-7_Overhaul_Manual_DRAFT_(29_10_14).docx
Figure 111
– Disassembling Carburettor #1
Figure 112
– Disassembling Carburettor #2
Remove the upper cap of the carburettor and inspect the rubber diaphragm for any cracking, perishing
or other damage. Hold the diaphragm up to a strong light and carefully stretching each section in turn.
If any leaks are found then a new diaphragm must be ordered. Lift the slide and diaphragm assembly
out of the carburettor body, remove the needle (using a flat-bladed screwdriver, Figure 112 left) and
inspect the condition of the parts, checking the needle for wear and to determine if it is the current
design.
Remove the float bowl, floats, needle valve and jets. Hold each jet up to the light to check that it is
clean. Particularly check for varnish which can form inside the jet, reducing its internal size. This
varnish can normally be removed easily using an aerosol carburettor cleaner. Do not use drills or wire
to clean jets as this can alter their internal size and affect the engine tuning.
Remove cap screws
Idle jet
Main/Needle Jets
Choke Jet Tube
Idle screw