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Engine Operation
4-3.4. Taxi Preparation
CAUTION: DO NOT operate the engine at run-up speed unless the
oil temperature reaches at least 75°F (24°C) and the oil pressure is
within the 30-60 psi range. Operating the engine above idle before
reaching minimum oil temperature may cause a loss of oil pressure
and engine damage.
Before taxiing, refer to the AFM/POH for detailed taxi preparation procedures applicable
to your aircraft. Check the following items:
NOTE: For taxi operation during high ambient temperature or from fields
at higher altitudes, the mixture control may require leaning for smooth
engine operation. A FULL RICH mixture must be used for takeoff.
1. Cowling Flaps .................................................. FULL OPEN (if equipped)
2. Instrument Checkout........................................ Refer to AFM/POH
4-3.5. Take-Off
If, during preflight check or engine warm-up, any operational
abnormalities occur, do not take off. Determine cause and take
corrective action necessary to maintain airworthiness.
Supplement the AFM/POH take-off procedures with these engine settings:
1. Mixture............................................................. FULL RICH
2. Cowl Flaps ....................................................... per AFM/POH
3. Throttle............................................................. Advance for rated takeoff power
CAUTION: Never allow cylinder head and oil temperatures to
exceed limits. Near maximum temperatures should occur only when
operating under adverse conditions such as high power settings, low
airspeed, extreme ambient temperatures, etc. Take remedial steps to
reduce such temperatures as soon as possible. If excessive
temperatures are noted and cannot be explained, or if abnormal
cowl flap and/or mixture settings are required to maintain
temperatures, inspect to determine cause. Possible causes are
broken or missing baffles, inoperative cowl flaps, sticking oil
temperature control unit, or restricted fuel flow. Faulty instruments
or thermocouples may cause erroneously high (or low) indications.
Refer to troubleshooting procedures in Chapter 8 of the
Maintenance and Overhaul Manual (M-2).
4. Monitor Engine Gauges not to exceed operating limits
a. Tachometer
b. Fuel Flow (if equipped)
4-10
WARNING
O-200-D & X Series Engine Installation and Operation Manual
3 January 2017
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