AE50R, AE50RA
AE50RAB
Engine Manual
Doc. No. E1.01.0-E Rev. 6 10-March-2011 Page 18-9
WARNING !
Ensure all personnel are clear of propeller and aware that the
engine is to be started.
NOTE !
Choking the carburettor by covering the carburettor inlet will
not enrich the fuel supply, due to internal venting of the dry side
of the fuel-metering diaphragm to the carburettor mouth.
Engage the starter
If the engine does not start immediately, the throttle should be opened to WOT and slowly
closed whilst cranking the engine. If the engine does not start within three attempts, there is
probably a fault and this should be investigated.
Warming up
Having started the engine allow it to warm through at approx. 4000 rpm for 3-4 minutes, or
until the engine reaches operating temperature (60 C).
18.5.2 Setting the ‘L’ screw system
Return the throttle to idle. The low speed system is set by weakening the mixture (screwing
the L screw clockwise) until the engine just begins to falter. Then increase the flow (turn
anticlockwise) by the minimum amount to just achieve smooth running.
The Settings can be expected to be within ± 1/8 of the original settings.
The aircraft manufacturer’s required idle speed should then be set with the engine warm. If
one has not been supplied then Austro Engine GmbH recommend 2250 rpm (with a minimum
of 1750 rpm) if necessary, adjust the idle stop screw to achieve the appropriate speed.
If significant adjustment is required then also re-check the low speed (L) settings at this
corrected idle speed.
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