DG Flugzeugbau GmbH
Flight manual DG-500M
4.5 Normal procedures and recommended speeds
4.5.1 Engine starting, taxiing procedures
4.5.1.1 Engine starting on the ground
a) Switch the ignition off in the front DEI, but switch it on in the rear DEI.
b) Main switch on.
c) Switch on DEI to Avionik + engine.
d) Extend the engine with the manual switch on the right side console in
the front cockpit. Therefore lift the right cover and press the switch to
the front until the extension motor stops. Release the switch and put
down the red cover again.
Note: If you cannot extend the engine, check the circuit breaker first.
Otherwise see sect. 8 trouble shooting.
e) Check if the control light "engine extended" is on.
f) Turn the propeller min. 1 turn by hand.
g) Switch on the ignition in the front DEI (note: the toggle has to be pulled
out for switching). With both ignition switches "on" the control light
"ignition on" must be on. Listen if you can hear the electrical fuel pump.
If you don't hear the pump, it may be defective and you shouldn't try to
start the engine.
h) Check if the switch for the primer is on "auto" position.
i) Pull the throttle back to closed position with cold engine and low OAT.
Otherwise push the throttle in approximately 1-2 cm (0.4-0.8 in).
j) Check that the propeller is clear.
k) Push the starter button until the engine runs.
When starting with cold engine the red control light near the primer
switch must be on. After starting the light must go out, see also
sect. 4.5.1.2.
l) As soon as the engine runs, move the throttle forward.
m) Adjust the engine RPM to approx.3000 and check the ignition circuits
(magnetos), but not before the engine runs smooth.
n) Check full engine RPM (wheel brake closed). Min. 6600 RPM.
o) Check the fuel flow. With the engine running at full throttle switch over
to "Avionik" (thereby the electric fuel pump is switched off). Only a
short drop in engine RPM is acceptable, otherwise you should not take
off. The fuel filter is too dirty and should be replaced . See maintenance
manual sect. 3.5.1 point 4.
Issued: April 1997 TN 843/7 App. 4.12
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