CHEROKEE WARRIOR
2. Connect
the RED lead of
the
PEP kit
jumper
cable
to
the POSITIVE
1+1
terminal of an external l2-volt
battery and the
BLACK lead
to the
NEGATIVE
(-)
terminal.
3. Insert
the
plug
of the
jumper
cable into the socket
located
on the airplane's
fuselage.
Turn the airplane master switch ON and
proceed
with
the
normal engine starting
technique.
After
the engine
has been started, turn
the master switch
OFF and
disconnect
the
jumper
cable
plug
from
the airplane.
Turn the master switch ON and
check the alternator
ammeter
for indication of
output.
DO NOT ATTEMPT
FLIGHT IF THERE
IS
NO INDICATION
OF
ALTERNATO
R O I.-TTPIj"T.
WARM-UP
Warm-up
the engine at 800
to 1200 RPM for not more than
two minutes
in warm
weather
or 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 takeoff,
it is recommended
that the engine
be
idled at 1200 RPM.
Takeoff may be
made as soon as the
ground
check
is completed,
provided
the throttle
may
be opened
fully without
backfiring
or skipping and
without a reduction
in engine
oil
pressure.
GROUND
CHECK
Check the magnetos at
2000 RPM by switching
from BOTH to
RIGHT,
then
back
to
BOTH before switching
to
LEFT.
The drop on either magneto
should
not exceed
175
RPM, and
each magneto should read
within 50
RPM
of the other.
Prolonged
operation
on one
magneto
should be avoided.
Check
the
vacuum
gauge;
the
indicator
should
read 5"
+
.l
"
Hg at 2000
RPM.
Check both
the oil temperature and
pressure.
The
temperature
may
be low
for some
time
if the engine
is being run
for
the
first time of the day,
but as
long as
the oil
pressure
is within
limits, the engine is ready
for takeoff.
Check
the annunciator
panel
lights
with the
press-to-test
button*.
Carburctor
hcat should
also
bc
checkcd
prior
tr.r takcoff
to be
sure that
the control
is
operating
properly
and to clear
any ice that may have
formed during
taxiing.
Avoid
prolonged
operation
with
carburetor
heat ON
as the air
is unfiltered.
Be sure
that carburetor
heat is OFF
for takeoff.
Operation
of the engine driven
fuel
pump
should
be checked
while
taxiing or
during
preflight
engine runup
by switching the electric
fuel
pump
OFF and
observing the
fuel
pressure
gauge.
The electric
fuel
pump
should be ON during
takeoff
to
prevent
loss
of
power
during
takeoff
should the engine driven
pump
fail.
The
engine
is
warm enough
for takeoff
when the
throttle can be fully opened
without
the engine
faltering.
*Serial
nos. 7515001
and
up
OPERATING
INSTRUCTIONS
REVISED: JLJNE 14.1974
4.
5.
6.
71
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