Jabiru 3300 - Cold Engine; Warm Engine; Warming up Period; Ground Running

Engine Maintenance Manual
Jabiru Aircraft Pty Ltd
JEM0002-5
Jabiru 2200 & 3300 Aircraft Engines
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ISSUE
1
2
3
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5
Dated : 2nd June 2015
Issued By: AS
Page: 28 of 103
L:\files\Manuals_For_Products\Engine_Manuals\Engine Maintenance Manual 22 & 33\JEM0002-5.docx
5.2.1 Cold Engine
Fuel Tap OPEN
Choke ON – HOLD (in cold conditions less than 20°C)
Fuel Pump ON for 10 seconds then off
Throttle FULLY CLOSED: “cracked” throttle degrades choke
Master ON
Ignition BOTH ON
Starter PRESS
5.2.2 Warm Engine
 As for cold start, with the following differences:
Choke OFF
Throttle Slightly “Cracked” from off position (approx 2%).
5.3 Warming Up Period
 Start the warming up period with the engine running at 1200 RPM for around 1 minute.
 Continue at 2000 RPM depending on ambient temperature, until oil temperature reaches 15°C
(59°F).
 Check the two ignition circuits at 2000 RPM
Note: Engine RPM should not drop by more than 100 RPM when 1 ignition is turned OFF.
WARNING
DO NOT apply full power until CHT reaches 100
°
C (212
°
F)
DO NOT apply full power until Oil Temperature reaches 40°C (104°F)
DO NOT allow cylinder heads to rise above 180°C (356°F) during ground running.
5.4 Ground Running
 When running the engine on the ground before flight use minimum power settings and
minimum time to avoid overheating: the engine is already run-in and further ground running can
be detrimental.
 Avoid prolonged ground running at elevated RPM as the engine can easily be over heated
during ground operations – remember air ducts are designed for in flight cooling.
 Ground running at high power settings for more than a few minutes requires the use of special,
oversize air ducts and oil cooler.
WARNING
Prolonged running at full power on the ground can cause engine overheating & damage
unless special, oversized air ducts and oil coolers are used.
5.5 Take-Off
 Ensure all temperatures and pressures are within limitations before applying take-off power.
 Climb with the engine at maximum continuous power.
 Observe Oil & Cylinder Head Temperatures & Oil Pressure.
 Max RPM at Full Throttle is 3300 RPM
WARNING
Limits must not be exceeded!
5.6 Engine Stop
 In normal conditions the engine will cool enough during descent & taxiing to permit it to be
stopped by switching OFF the ignitions.