Without
Preheat:
SERVICING INTERVALS
CHECK
LIST
(1)
Prime the
engine six to
ten strokes while the propeller
(COnfinued)
is
being
turned
by hand with
throttle closed. Leave
primer
charged and
ready for
stroke.
(2)
Propeller
Area
--
Clear.
EA
CH
500
HOURS
(3)
Master Switch
--
"ON."
(4)
Pump
throttle
rapidly to
full
open twice.
Return
to
1/8"
VACUUM
SYSTEM
AIR
FILTER
(OPT)
--
Replace
filter
element.
Re-
open
position•
place
sooner
if
suction
gage
reading
drops
to
4. 6
in.
Hg.
(5)
Ignition Switch
--
"START."
WHEEL
BEARINGS
--
Lubricate
at
first
100
hours
and at
500
hours
(6)
Release ignition
switch
to "BOTH"
when
engine
starts·
thereafter.
Reduce
lubrication
interval to
100
hours
when
operating
in
(7) Continue to prime
engine until it
is running smoothly,
or
dusty
or
seacoast
areas,
during
periods of
extensive taxiing,
or
when
alternately
pump
throttle rapidly over first
1/4
to total
travel•
numerous
take-offs
and
landings
are
made.
(8)
Oil Pressure
--
Check.
(9)
Pull carburetor
heat knob
full on
after engine
has
started.
Leave
on until engine is
running smoothly.
(10)
Lock
Primer.
A
SREQU \
RED
NOTE
NOSE
GEAR
SHOCK
STRUT
--
Keep
filled
with
fluid
and
inflated
to
45 psi.
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.
IMPORTANT
Pumping
the throttle may
cause raw
fuel
to
accumulate
in
the intake air duct, creating
a
fire
hazard 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
ex-
tinguisher
is
advised for cold
starts
without
preheat.
During
cold
weather
operations,
no indication
will
be apparent
on
the
oil temperature gage
prior
to
take-off
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
take-off.
FLIGHT
OPERATIONS.
Take-off
is
made normally
with
carburetor heat off. Avoid
excessive
leaning
in
cruise.
2-14
4-9
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