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Cessna 177 SERIES Service Manual

Cessna 177 SERIES
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After
the
engine
has
been
placed
in
the
correct
firing
c.
BENDIX
D-2000
(DUAL)
SERIES.
The
magneto
position,
install
and
time
the
magneto
to
the
engine
must
be
installed
with
its timing
marks
carefully
in
the
following
manner:
aligned,
with
number
one
cylinder
on
its
compression
1.
Remove
timing
inspection
plug
from
top
of
stroke
and with
the
number
one
piston
at
its
advanced
magneto.
Turn
magneto
drive
shaft
in
direction
of
firing
position.
Refer
to
paragraph
11-12
for
the
ad-
operating
rotation
until
the
applicable
timing
mark
vanced
firing
position
of
number
one
piston.
To
lo-
on
the
distributor
gear
is
approximately
aligned
with
cate
the
compression
stroke
of
the
number
one
cylin-
the
mark
on
the
distributor
block.
Depress
impulse
der,
remove
the lower
spark
plug
from
number
2,
3
coupling
pawls
on
left
magneto
to
rotate
magneto
and
4
cylinders.
Remove
the
upper
spark
plug
from
shaft.
number
1
cylinder.
Place
the
thumb
of
one
hand
over
the
spark
plug
hole
of
number
one
cylinder
and
rotate
NOTE
crankshaft
in
the
direction
of
normal
rotation
until
the
compression
stroke
is
indicated
by
positive
pres-
The
timing
marks
are
for
reference
only.
sure
inside
the
cylinder
lifting
the
thumb
off
the
spark
They
should
not
be
used
to
adjust
contact
plug
hole.
After
the
compression
stroke
is
attained,
breaker
point
opening
or
to
determine
pro-
locate
number
one
piston
at
its
advanced
firing
posi-
per
timing
of
the
magneto.
(Refer
to
para-
tion.
Locating
the
advanced
firing
position
of
number
graph
11-60
for
internal
timing.
)
one
piston
may
be
obtained
by
rotating
the
crankshaft
opposite
to
its
normal
direction
of
rotation
until
it
is
2.
Be
sure
magneto
gasket
(right
magneto),
mag-
approximately
30
degrees
before
top
dead
center
neto adapter
and
gaskets
(left
magneto)
are
in
place
(BTC)
on
the
compression
stroke
of
number
one cyl-
and
that
engine
is
in the
correct
firing
position,
then
inder.
Rotate
crankshaft
in
a
normal
direction
to
install
magneto
approximately
at
the
angle
noted
dur-
align
the
timing
mark
on
the
front
face
of
the
starter
ing
removal,
tighten
mounting
nuts
finger
tight.
ring
gear support
with
the
drilled
hole
in
the
starter,
making
sure
the
final
motion
of
the
ring gear
is
in
the
NOTE
direction
of
normal
rotation.
Be
sure
to
keep
timing
marks
in
the magneto
NOTE
aligned
as
close
as
possible
when
installing
on
the
engine.
An
accurate
top
center
indicator
which
screws
into
a
spark
plug
mounting hole,
3.
Connect
positive
lead
of
the
timing
light
(Ben-
and a
pendulum
pointer mounted
on
a
dix
Part
No.
11-9110
or
equivalent)
to the
switch
ter-
360-degree
timing
disc
may
also
be
used
minal
(capacitor
stud)
of
the magneto.
Secure
the
to
locate
the
advanced
firing
position.
common lead
of
timing light
to
good
ground.
-
The
timing
disc
should be
adapted
to
fit
4.
Rotate
propeller
opposite
to
normal
direction
over
the
end
of
the
propeller
spinner
in
of
rotation
a
few
degrees
(approximately
5
degrees)
such
a
manner
that
it
may
be
rotated
as
to
close
the
magneto
breaker
contact
points.
necessary.
In
all
cases,
it
must
be
definitely
determined
that
the
number
NOTE
one
cylinder
is
at
the
correct
firing
posi-
tion
and
on
the
compression stroke,
when
Do
not
rotate
propeller
backward
enough
to
the
engine
is
turned
in
its
normal
direction
engage
impulse
coupling,
or
the
propeller
of
rotation.
will
have
to
be
rotated
in
the
normal
direc-
tion
of
rotation
until
impulse
coupling
re-
After
the
engine
has
been
placed
in
the
correct
firing
leases
on
the
left
magneto,
then
again
backed-
position,
install
the magneto
to
the
engine
in
the
fol-
up
to a
few
degrees
before
the
firing
position.
lowing
manner:
1.
Remove
the
timing
window
plug
from
the
most
5.
Slowly
advance
propeller
(tap
forward
with
convenient
side
of
the
magneto
housing.
minute movements
as
advanced
firing
position
is
ap-
2.
Remove
the
rotor
viewing
location
plug
from
proached)
in
normal
direction
of
rotation
until
timing
the
top
center
of
the
housing.
light
indicates
position
at
which
contacts
break.
The
3.
Turn
the
rotating
magnet
drive shaft
in the
contacts
should
break
at
the
advanced
firing position
normal
direction
of
magneto
rotation
until the
red
of
number
one
cylinder.
Loosen
mounting
nuts
slight-
painted
tooth
of
the
large
distributor
gear
is
centered
ly
and
rotate
magneto
case
as
required
to
cause
the
in
the
timing
hole
(hole
at
each
side
of
magneto).
contacts
to
break
at
the
correct
position.
Tighten
4.
Also
observe
at
this
time
that
the
built
in
mounting
nuts.
pointer
just
ahead
of
the
rotor
viewing
window
aligns
6.
After
tightening
magneto
mounting
nuts,
re-
with
the
L
("E"
gap)
mark
on
the
rotor.
check
timing.
Make
sure
that
both
magnetos
are
set
5.
Install
the
magneto-to-engine
gasket
on
the
to
fire
at
the
same
time.
Remove
timing
equipment,
magneto
flange.
install
spark plugs
and
connect
spark
plug
leads
and
ignition
switch
leads.
[WARNING
Do
not
attach
harness spark
plug
leads
to
the
spark
plugs until
all
magneto-to-engine
timing
procedures
are
completed
and
the
switch
leads
("P"
leads)
are
connected.
Change
2
11-25

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Cessna 177 SERIES Specifications

General IconGeneral
ManufacturerCessna
Engine TypePiston
Wingspan35 ft 6 in (10.82 m)
Seating Capacity4
Number Built4, 295
EngineLycoming O-360
Horsepower180 hp
Maximum Takeoff Weight2, 500 lb (1, 134 kg)

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