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CESSNA
MODEL 172N
SECTION
4
NORMAL PROCEDURES
the go-around climb, reduce the wing flap setting to
lo0
and maintain a safe
airspeed until the obstacles are cleared. Above 3000 feet, lean the mixture
to obtain maximum RPM. After clearing any obstacles, the flaps may be
retracted a s the airplane accelerates to the normal flaps-up climb speed.
COLD WEATHER OPERATION
STARTING
Prior to starting on cold mornings, it i s advisable to pull the propeller
through several times by hand to "break loose" or "limber" the oil, thus
conserving battery energy.
NOTE
When pulling the propeller through by hand, treat it a s if
the ignition switch is turned on. A loose or broken ground
wire on either magneto could cause the engine to fire.
When air temperatures are below 20°F (-6OC), the use of an external
-
preheater and an external power source are recommended whenever
possible to obtain positive starting and to reduce wear and abuse to the
I
engine and electrical system. Pre-heat will thaw the oil trapped in the oil
cooler, which probably will be congealed prior to starting in extremely
cold temperatures. When using an external power source, the position of
the master switch i s important. Refer to Section 9, Supplements, for
Ground Service Plug Receptacle operating details.
Cold weather starting procedures are a s follows:
With Preheat:
1. With ignition switch OFF and throttle closed, prime the engine four
to eight strokes a s the propeller i s being turned over by hand.
NOTE
Use heavy strokes of primer for best atomization of fuel.
After priming, push primer all the way in and turn to
locked position to avoid possibility of engine drawing fuel
through the primer.
2.
Propeller Area
--
CLEAR.
3.
Avionics Power Switch
--
OFF.
4.
Master Switch
--
ON.
1
July 1979
Revision
1 -
15 November 1979
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