SECTION 4
NORMAL PROCEDURES
5.
Mixture -- FULL RICH.
6.
Throttle -- OPEN 1/ 8 INCH.
7.
Ignition Switch -- START.
CESSNA
MODEL 172N
8.
Release ignition switch to BOTH when engine starts.
9.
Oil Pressure -- CHECK.
Without Pr
e
heat:
1.
Prime the engine six to ten strokes while the propeller is being
turned by hand with the throttle closed. Leave the primer charged
and ready for a stroke.
2.
Propeller Area. -- CLEAR.
3.
Avionics Power Switch -- OFF.
4.
Master Switch -- ON.
5.
Mixture -- FULL RICH.
6.
Ignition Switch -- START.
7.
Pump throttle rapidly to full open twice. Return to 1/8 inch open
position.
8.
Release ignition switch to BOTH when engine starts.
9.
Continue to prime engine until it is running smoothly, or alter
nately, pump throttle rapidly over first 1/4 of total travel.
10.
Oil Pressure -- CHECK.
11.
Pull carburetor heat knob full on after engine has started. Leave on
until engine is running smoothly.
12.
Primer -- LOCK.
NOTE
If the engine does not start during the first few attempts, or
if
engine firing diminishes in strength,
it
is
probable
that
the spark plugs have been frosted over. Preheat must be
used before another start is attempted.
CAUTION
Pumping the throttle may cause raw fuel to accumulate in
the intake air duct, creating a fire hazard in the event of a
backfire.
If
this occurs, maintain a cranking action to suck
flames into the engine. An outside attendant with a fire
extinguisher is advised for cold starts without preheat.
During cold weather operations no indication will be apparent on the
oil temperature gage prior to takeoff if outside air temperatures are very
cold. After a suitable warm-up period (2 to
5
minutes at 1000 RPM),
accelerate the engine several times to higher engine RPM.
If
the engine
accelerates smoothly and the oil pressure remains normal and steady, the
airplane is ready for takeoff.
4-22
1 July 1979
Содержание 17273274
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