Table of Contents
Advertisement
SECTION
4
NORMAL
PROCEDURES
CESSNA
MODEL
172N
5.
Mixture
-- FULL RICH.
6.
Throttle -- OPEN 1/8INCH.
7.
Ignition Switch --
START.
8.
Release
ignition switch
to BOTH when engine starts.
9.
OiI Pressure --
CHECK.
Without
Preheat:
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 ll4
of total travel.
10.
Oil
Pressure
--
CHECK.
1
1.
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 afirehazard 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
Advertisement
Chapters
Table of Contents
