Disengage choke.
Check oil pressure (must increase within 10 sec.).
6.3 Runup, Performance Check
Run the engine for approx. 2 min. at 1000 - 1200 RPM. Then increase speed to 1500 RPM until oil
temperature is 50 °C.
Due to the sluggish action of the indication, there will be sufficient effective operating
temperature at 50 °C already.
Check magnetos for proper function (dual ignition only).
Set engine speed to 2000 RPM. Then switch to the right and subsequently to the left
magneto only. The speed drop must not exceed 100 RPM.
6.3.1 Performance Check
Move throttle lever to full-throttle stop. Engine has to reach the full-throttle static
speed published in the flight and maintenance manual of the aircraft manufacturer.
Return throttle lever to idle.
6.3.2 Check carburetor heating for proper functioning
Refer to the flight and maintenance manual of the aircraft manufacturer.
If full-throttle ground runs are made for a longer period, overheating
of the engine is possible!
6.4 Hot Engine Start-Up
Hot engine starting is performed as described in Chapter 6.2, but with choke closed. After
starting run the engine with increased idle speed (1500 RPM) for approx. 3 to 4 min., in order
to assure that there will be no vapor lock in the fuel system.
6.5 Take-Off
Increase engine speed steadily to full throttle and perform first part of climb with this setting,
then reduce power.
Check oil temperature and oil pressure. The limit values must not be exceeded.
Caution:
With increasing ambient temperatures the engine power and the lift up of the wings
will be reduced. This applies especially to situations in which the runways has been
heated up by sunlight!
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