Cessna 172P - Page 69

CESSNA
MODEL 172P
SECTION
4
NOR,MAL
PN,OCEDUR,ES
the
go-around
climb, reduce
the
wing flap setting to
10o 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
as
the
airplane accelerates to the normal
flaps-up
climb
speed.
COLD
WEATHER
OPERATION
STARTING
Prior to
starting
on cold mornings, it is 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
as 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 20oF
(-6oC),
the use of an externa,l
preheater
and
an
external
power
source are
recommended wheneve¡
possible
to
obtain
positive
starting and to ¡educe
wear
and abuse
to the
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 is
important.
Refer to
Section
9,
Supplements,
for
Ground
Service
Plug
Receptacle
oporating
details.
Cold weather
starting
procedures
are as follows:
lVith
Preheat:
1.
With
ignition
switch
OFF and throttle
closed,
prime
the engine four
to
eight
strokes
as ttre
propeller
is 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
--
CIJEAR.
3. Avionics
Power
Switch
--
OFF.
4.
Master
Switch --
ON.
30 May 1980
4-2L