SECTION
Ill
CHEROKEE
"D"
NORMAL engine starting technique.
5. After engine has been started,
turn
MASTER SWITCH
to
OFF
and remove
jumper
cable plug from aircraft.
6.
Turn
aircraft MASTER SWITCH
to
ON and check alternator
ammeter for indication
of
output.
DO
NOT ATTEMPT FLIGHT
IF
THERE IS
NO
INDICATION OF ALTERNATOR OUTPUT.
When
the
engine
is
firing
evenly,
advance
the
throttle
to
800 RPM.
If
oil
pressure
is
not
indicated
within
thirty
seconds,
stop
the
engine
and
detennine
the
trouble.
In
cold
weather
it
will
take
a few
seconds
longer
to
get
an
oil
pressure
indication.
If
the
engine
has
failed
to
start,
refer
to
the
"Lycoming
Operating
Handbook,
Engine
Troubles
and
Their
Remedies."
Starter
manufacturers
recommend
that
cranking
periods
be
limited
to
thirty
seconds
with
a
two
minute
rest
between
cranking
periods.
Longer
cranking
periods
will
shorten
the
life
of
the
starter.
WARM~UP
AND
GROUND
CHECK
Warm-up
the
engine
at
800
to
1200 RPM for
not
more
than
two
minutes in wann
weather,
four
minutes
in
cold
weather.
Avoid
prolonged
idling
at
low RPM
as
this
practice
may
result
in
fouled
spark
plugs.
If
necessary
to
hold
before
take-off,
it
is
recom-
mended
that
the
engine
be
idled
at
1200 RPM.
The
magnetos
should
be
checked
at
1800 RPM and
the
drop
off on
either
magneto
should
not
exceed
125 RPM and
should
be
within
50
RPM of
the
other.
Prolonged
operation
on one magneto
should
be
avoided.
Check vacuum gauge, indicator should read
5"
Hg
±
.1"
Hg
at
2000rpm.
Check
both
the
oil
temperature
and
pressure.
The
tempera-
ture
may
be
low for some time
if
the
engine
is
being
run for
the
first
time
of
the
day,
but
as
long
as
the
pressure
is
within
limits
the
engine
is
ready
for
take-off.
Carburetor
heat
should also
be
checked prior
to
take-off
to
be sure
that
the
control is operating properly and
to
clear any ice which may
have formed during taxiing. Avoid prolonged ground operation with
carburetor heat
ON
as
the
air is unfiltered.
19
noHo
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