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Pilots Operating Handbook
13/76
YL-MFG
Revision 7, Issue 1 4/6/2016
2.8 Fuel
Approved fuel grades are
Mogas (min. RON 95) or AVGAS 100 LL . Recommended fuel for Rotax
type 912 and 914 engines is Mogas RON 98 .
Note: Due to the higher lead content in AVGAS, the wear of the valve seats, the deposits in
combustion chamber and lead sediments in the lubrication system will increase. If the engine
is run on AVGAS more frequent oil changes are required. Therefore, use AVGAS only if you
encounter problems with vapor lock or if other fuel types are not available.
For more details, look at Operator’s Manual for all versions of Rotax 914 supplied with the engine.
Fuel tank capacity (liters):
WARNING: Take-off is prohibited if fuel level is below ¼ of the fuel indicator.
NOTE: To ensure maximum fuel capacity and minimize cross feeding when refueling, always
park the airplane in a wings level, normal ground attitude.
2.9
Engine
YL-MFG is powered by EPA Power SA-R917Ti ULM engine. It is fuel injected for utmost safety and
low fuel consumption, and turbo-normalized, which assures constant maximum power of 100KW
from sea level to the service ceiling of 15’000 feet.
The ECU (Electronic Control Unit) automatically manages ignition, fuel injection and turbo,
calculating engine and external inputs, to offer optimum power and torque from take-off to the
service ceiling. For details refer to the EPA Power Operating Manual.
Engine model
EPA Power SA-R917Ti ULM
Max. take-off Power (kW/hp) 100/130
Max. continuous power (kW/hp) 82/110
Max. engine speed (take-off) 5 800 RPM
Max. engine speed (continuous) 5 500 RPM
Max. cylinder head temperature 120°C
Max. coolant temperature 120°C
Min/Max oil temperature (°C) 50 – 120°C
Oil temperature normal range 90 – 110°C
Oil pressure minimum (bar) 0.8 <3500rpm, 1.5 >3500rpm
Oil pressure maximum (cold start only, bar) 7
Oil pressure normal operation (bar) 2 – 5
Fuel pressure (min-max, bar) 2 – 3.6
Max. exhaust gas temperature 900°C
Normal exhaust gas temperature 850°C
Total capacity
85,0
Total capacity in each wing tank 42,5
Total useable fuel 80,0
Total usable fuel in each wing tank 40,0
Unusable fuel 5,0