7.
Check magneto in the normal manner.
8.
When the oil temperature has reached 100°F. and oil pressure does not exceed 80
psi at 1700 RPM, the engine has been warmed sufficiently to accept full rated power.
CAUTION.
. .
Do not close the cowl flaps in an attempt to hasten warm-up.
NOTE.
. .
Fuel flow will probably be on the high limit; however, this is normal and desirable
since the engine will be developing more horsepower at substandard ambient temperatures.
If preheat is not used, employ the same start procedures for a normal start, except:
1.
At temperatures below
+20°F., continue priming while cranking until engine starts.
2.
When engine starts and accelerates thru 500 RPM, release Starter.
3.
Advance throttle slowly to obtain smooth engine operation.
4.
Release primer.
5.
Auxiliary
Fuel
Pump on low as necessary to obtain smooth engine operation.
6.
Oil Pressure
-
Check. If none noted within 30 seconds, shut down engine and
investigate.
Observe oil pressure for indication and warm-up engine at 1000 RPM. Ground operation and
run-up require no special techniques other than warming the engine sufficiently to maintain
oil temperature and oil pressure within limits when full RPM is applied.
NOTE.
. .
Before applying power for takeoff, assure that oil pressure, oil temperature and
cylinder head temperature are well within the normal operating range. When full power is
applied for takeoff, assure that oil pressure is within limits and steady.
Any of the following engine conditions should be cause for concern, and are justification to
discontinue the takeoff.
1.
Low, high or surging RPM.
2.
Fuel Row excessively high or low.
3.
Any oil pressure indication other than steady within limits.
4.
Engine roughness.
80-00-08
HOT WEATHER OPERATION (Ambient Temperature in Excess
of
90°F.)
C1AlXlON.
. .
When operating in hot weather areas, be alert for higher than normal levels of
dust, dirt or sand in the air. Inspect air
filters frequently and be prepared to clean or
replace them
if
necesscuy.
Weather conditions can lift damaging levels of dust and sand high
above the ground.
If
the aircraft is flown through such conditions, an oil change is recom-
mended
as
soon
as
possible. Do not intentionally operate the engine in dust and/or sand
stoms. The use of dust covers on the cowling will afford additional protection for a parked
aircraft.
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