4) Engine Start - Rotax 912 series Operator's Manual

10.3.4) Engine start

Effectivity: 912 Serie
OM Rev. 3
WARNING! Do not take the engine into operation if any
person is near the aircraft.
Fuel cock. .................................. open
Starting carb. ............................ activated
NOTE: If the engine is already in operating temperature,
start the engine without choke.
Throttle lever. ............................ set to idle position
Master switch. ........................... on
Ignition. ...................................... both circuits switched on
Starter button. ........................... actuate
CAUTION: Activate starter for max. 10 sec. only (without
interruption), followed by a cooling period of 2
minutes!
As soon as engine runs, adjust throttle to achieve smooth running
at approx. 2500 r.p.m.
Check if oil pressure has risen within 10 seconds and monitor oil
pressure. Increase of engine speed is only permitted at steady oil
pressure readings above 2 bar (30 psi).
At an engine start with low oil temperature, continue to observe the
oil pressure as it could drop again due to the increased flow
resistance in the suction line. The number of revolutions may be
only so far increased that the oil pressure remains steady.
De-activate starting carb.
CAUTION: Since the engine comprises a reduction gear
with shock absorber, take special care of the
following:
To prevent impact load, start with throttle lever in
idle position or at the most up to 10% open. For
the same reason, wait for around 3 sec. after
throttling back to partial load to reach constant
speed before re-acceleration.
For checking the two ignition circuits, only one
circuit may be switched off and on at times.
CAUTION: Do not actuate starter button (switch) as long as
the engine is running. Wait until complete stop of
engine!
AIRCRAFT ENGINES
page 10 - 16
July. 01/2004