T
-I TRODUCTION 7 0
Years
of
Franklin
engineering
experience
plus
the
highest
quality
in
materials and
wo
rkm
ans
hip, t
o-
gether
with
the
most modern
manufacturing
methods
are
back
of eve
ry
Fr
an
klin engine shipped from
our
factory.
It
is
the
purpose
of
this
manual
to furnish ready
reference
and
practical
in
formation on the operation,
inspection, preventive
maintenance
and
complete overhaul
of
the
model 6
A4
-1
50
-83 and 831 and
6A4-165-B3
Franklin engines
and
their
accessories.
The
name
and
data
plate, which is located
either
on
the
starter
Bendix housing
or
on
the
lower right
hand
side of
the
c
rankca
se just
ab
ove
the
oil pan,
indicates
the
engine
model.
An
eff
o
rt
has
been
mode
to
arrange
the
material
in
the
manual
so
that
the
description, function, in-
spection
and
repair
of
the
component
parts
of
the
engine
and
its accessories
are
com
pl
etely covered
in
their
individual sections.
In referring to locations on
the
engine, it is
assumed
that
the
observer's position
is
at
the
ac
cessory
end
of
the
engine, facing forward
in
line with
the
crankshaft.
Hence, t
he
p
ro
peller end
will
be r
eferred
to
as
the
front
of
the
engine
irrespective
of
the
p03ition
the
engine
occu
pi
es
in
th
e
air
craft. Cylinders
number
1, 3,
and
5
are
on
the
left side
of
the
engine
and
cyl
inders
numb
er
2, 4,
and
6
are
on
the
right
with
numbers
1
and
2
at
the
rear.
It
is
recommended
in
the
interest
of
safety,
operating economy
and
max
i
mum
service life
of
the
engine
that
the
operating
limits, inspections, tolerances,
maintenance
and
overhaul
instruct
ions
and
methods
be strictly
adhered
to. It
is
also recommended
that
existing instructions
of
the
various
air
craft, pro-
peller
and
accessory
manufacturers
regarding
the
servicing
of
their
products
be
rigidly followed.
Additional or revised information will
be
issued
as
it
becomes available.
Pl
e
as
e keep us adv
is
ed
of
your
current
mailing
address
to
insure
prompt
receipt
of
this
mat
erial.
To insure
that
your best
interests
be
served
and
satisfaction
be
gu
ara
n
teed,
we re
com
mend
th
at
replacements
be
made
with
genuine
Franklin
parts
only. A list
of
authorized
Franklin d
istribut
ors,
together
with shipping instructions,
appears
on
page
7.
Please
address
all
technical
service inquiries
or
comments
to
Service Division, Aircooled Moto
rs
, Inc.,
Syracuse
8,
New York. They
wi
II
receive
prompt
and
courteous
atten
tion.
11-
WARRANTY
Aircooled Motors, Inc.,
warrants
each
new Franklin
engine
or
new
part
manuf
ac
tured by
it
again
st
defects
in
material
or
workmanship
under
normal use,
but
its
obligation
under this warra
nt
y
is
spe
ci
f
i-
cally Iimited
to
replacing
or
repairing
at
its factory
any
such
engine
or
pa
rt
wh
ich shall, within
90
days
after
delivery
ther
e
of
to
the
original
purchaser
and
prior
to
50
hours of
operati
on, be
returned
to
Aircooled Motors, Inc., with its permission,
transportation
charges
prepaid, and
wh
ich upon exami-
nation
by Aircooled Motors, Inc.,
is
determined
by Aircooled Motors, Inc. to be defective.
This
warranty
shall
not
apply
to
any
such
engine
or
parts
which have
bee
n repaired or
alt
ered outside
Aircooled Motors, Inc. factory
in
any
way so
as
to
affect,
in
i
ts
judgment
, its op
er
ation,
or
which h
ave
been
subjected
to
misuse, neglect, improper
maintenance
or
accident,
or
which sha
ll
ha
ve b
ee
n
oper-
ated
at
a speed
exceeding
the
factory
rated
speed.
Aircooled Motors, Inc.
makes
no
warranty
with
respect
to
ignition
apparat
us, ca rb
uretor
s, in
st
rument
s,
tr
ade
accessories,
or
other
equipment
which it does
not
itself build
or
m
anuf
a
ct
ure
in
as
mu
ch as such
eq
uipment
is
usually
guaranteed
by
the
respective
manu
fa
cturers
thereo
f.
The
foregOing
is
the
exclusive
warranty
made
by Aircooled Motors, Inco
Th
er
e are no
other
w
arranties
expressed or implied,
in
fact
or
in
law,
made
by Aircooled Motors, Inc.
AIRCOO
LED
MOTORS, INC.
Syracuse 8, New York
5
