Pipistrel Virus 912, Flight And Maintenance Manual, Page: 16 / 108

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Limitations
Engine, fuel, oil
Engine manufacturer: ROTAX
Engine type: ROTAX 912 UL
The engine
TEMPERATURE °C / ROTAX ENGINE 912 UL
cylinder head temp. (CHT); minimum, working, highest 80; 110; 150
max. CHT difference /
exhaust gas tempetarure (EGT); normal, max. 650-800; 900
max. EGT difference
30
air intake temperature (AIR); highest
40
cooling fluids temperature (WATER); minimum, highest
50; 110
oils temperature (OIL TEMP); minimum, normal, highest
50; 90-110; 140
RPM, PRESSURE 912 UL
oil pressure (OIL PRESS); lowest, highest
0,2; 6,0
engine revolutions (RPM); on ground recommended 5500
RPM on ground; max. allowable 5800
magneto check at (RPM) 4000
max. single magneto drop (RPM) 300
Fuel and oil
ROTAX ENGINE 912 UL
recommended fuel unleaded super
fuel to be discouraged from using
leaded * or
100LL
*
recommended oil
API SJ SAE
10W-50
*Engine life is reduced. Should you be forced to used this kind of fuel, change of engine oil every
50 flight hours is crucial. Please consult the manufacturer on which type of oil to use.
IMPORTANT!
Four-stroke engines should only be powered by unleaded fuel, for lead sedimentation inside the en-
gine shortens its life. Provided you are unable to use unleaded fuel, make sure engine oil and the oil
filter are replaced every 50 flight hours.