O-200-D & X Series Engine Installation and Operation Manual
4-3
3 January 2017
Engine Operation
4-2.3. Flight Check and Break-In
New and factory rebuilt Continental Motors engines are adjusted to un-installed factory
specifications in a test cell prior to shipment. A flight check ensures the engine meets
operational and performance specifications after installation in the aircraft, prior to release
for normal service. The recommended break-in period for Continental Motors engines is
25 hours. Adhere to the following instructions and the “Engine Specifications” in Section
2-4 applicable to your engine model
Perform an “Engine Operational Check” according to instructions in Section 6-3.6 of the
Maintenance and Overhaul Manual (M-2) and a normal preflight ground run-up in
accordance with the Airplane Flight Manual or Pilot's Operating Handbook (AFM/POH)
before the A&P mechanic can approve the airplane for a Flight Check. Perform a Flight
Check according to instructions in Section 4-2.3.2 after engine installation, inspection,
repairs, or adjustments. Follow the protocol specified in Section 4-2.3.1 to complete the
recommended 25 hour engine break-in period.
WARNING
Avoid long descents at high engine RPM to prevent undesirable
engine cooling. If power must be reduced for long periods,
adjust the propeller to minimum governing RPM, if equipped,
to obtain desired performance levels. If outside air temperature
is extremely cold, it may be desirable to increase drag to
maintain engine power without gaining excess airspeed. Do not
permit cylinder head temperature to drop below 300°F (149°C).
CAUTION: High power ground operation resulting in cylinder and
oil temperatures exceeding normal operating limits can be
detrimental to cylinders, pistons, valves, and rings.
4-2.3.1. Engine Break-In
Operate the engine within the limits specified in the “Engine Specifications” in Section 2-
4 at all times for twenty-five hours to complete the recommended break-in period.
Descend at low cruise power settings. Avoid long descents with engine speed below 1500
RPM. Carefully monitor engine instrumentation to maintain levels above the minimum
specified cylinder head temperature and oil temperature.
1. Conduct a normal engine start, ground run-up and take-off according to the AFM/
POH.
2. Monitor a) engine RPM, b) fuel flow, c) oil pressure and temperature, d) cylinder
head temperature and e) exhaust gas temperature to ensure the engine does not
exceed the parameters in Section 2-4.
3. Reduce engine speed to climb power according to the AFM/POH instructions.
maintain a shallow climb attitude to achieve optimum airspeed and cooling airflow.
Summary of Contents for O-200-D
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