4-2
IO-240 Series Engine Installation & Operation Manual
31 October 2011
Engine Operation
4-2.1. Oil Change Interval
NOTE: After the first 25 hours of operation, perform an oil change
according to the “Engine Oil Servicing” instructions in Section 6-3.7 of
the Maintenance and Overhaul Manual (M-6).
The Oil Change Interval is specified in Table 6-1, “Engine Inspection and Maintenance
Schedule.” in the Maintenance and Overhaul Manual (M-6).
4-2.2. Engine Fuel Requirements
WARNING
The engine is certified for operation with 100 or 100-LL
aviation fuel. If the minimum fuel grade is not available, use the
next higher grade. Never use a lower grade fuel. The use of
lower octane fuel may result in damage to, or destruction of, an
engine the first time high power is applied.
If the aircraft is inadvertently serviced with the incorrect grade of aviation fuel or jet fuel,
the fuel system must be completely drained and the fuel tanks serviced in accordance with
the aircraft manufacturer's recommendations. After the fuel system is decontaminated,
inspect the engine according to the “Contaminated Fuel System Inspection” instructions in
Section 6-4.5 in the Maintenance and Overhaul Manual (M-6).
4-2.3. Flight Check and Break-In
New and factory rebuilt Continental Motors engines are adjusted to meet product
specifications prior to shipment. A flight check ensures the engine meets operational
specifications after installation in the airframe, prior to release for normal service.
Section 2-3, “Engine Specifications and Operating Limits” contains the engine
specifications and operating limits for each engine model.
Perform an Engine Operational Check and a normal preflight ground run-up in accordance
with the Airplane Flight Manual (AFM) or Pilot's Operating Handbook (POH), before
releasing the engine for a Flight Check. Engines with an altitude compensating fuel pump
requires a Flight Check after engine installation, fuel system repairs or adjustments,
significant changes in geographic location from the last operational check, if the auto-
leaning function is suspect, and at twelve month intervals, in conjunction with the Annual/
100-hour inspection. Engines equipped with a standard fuel pump flight check
requirements are the same as the engines with an altitude compensating fuel pump except
geographic location and auto-leaning functions do not apply. A flight check is also
required for engines with a standard fuel pump if rated, full power RPM cannot be verified
during a ground run-up.
Perform an “Engine Operational Check” according to instructions in Section 6-3.7 of the
Maintenance and Overhaul Manual (M-6) and a normal preflight, engine start and ground
run-up, according to the AFM/POH, before the A&P mechanic can approve the airplane
for a Flight Check.
Follow the instructions in Section 4-2.3.1 to completed the recommended break-in period
for Continental Motors engines. Perform a flight check after engine installation,
inspection, repairs, or adjustments on engine models equipped with a standard fuel pump
Summary of Contents for IO-240-A
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