Piper Cherokee Six - Page 383

NOTE
A
timing
kit,
including
timing
plate,
etc.
may
be
pur-
chased
through
the
engine
or
magneto
manufacturer.
A
pointer
may
be
formed
as
shown
in
Figure
7-9.
d.
Using
the
alignment
of
the
gearmarked
with
the
white
line
of
the
distributor
block
as
a
reference,
adjust
breaker
points
to
open
at
this
point.
Turn
the
mag-
neto
drive
until
the
cam
follower
is
on
high
point
of
the
cam
lobe.
Measure
con-
tact
clearance,
it
must
be
0.018
inch
±
0.006
with
the
"E"
gap
set
10
°
+ 4
°
.
If
breaker
points
do
not
come
within
tolerances,
they
should
be
replaced.
NOTE
A
pointer
can
also
be
made
by
wrapping
apiece
of
soft
wire
tightly
around
the
head
of
cam
securing
screw
and
bending
it
to
extend
over
timing
marks.
e.
If
magneto
is
type
which
has
"cast
in"
timing
marks
(-200
series,
see
Fig-
ure
7-10)
main
breaker
may
be
adjusted
with
magneto
on
engine
as
follows;
turn
engine
crankshaft
until
notch
in
cam
is
alignedwith
mark
at
top
of
breaker
com-
partment.
Set
wire
pointer
in
center
of
the
"E"
gap
boss
at
the
side
of
breaker
compartment.
Connect
timing
light
across
main
breaker.
Adjust
main
breaker
contacts
to
open
at
this
point.
Turn
engine
crankshaft
until
cam
follower
is
on
the
high
point
of
the
cam
lobe.
Measure
contact
clearance.
It
must
be
.018
±
.006.
If
necessary
readjust
breaker
and
recheck
to
be
sure
that
contacts
will
open
within
"E"
gap
tolerance
±
4
°
.
(Width
of
"E"
gap
boss.)
NEUTRAL
MARK
HOUSING
CENTER
MARK
POWER
PLANT
Issued:
8/17/72
NUMBER
OF
DEGREES
RETARD
Figure
7-10.
Breaker
Compartment
Figure
7-11.
Timing
Kit
Installed
with
Cast Timing
Marks
POWER
PLANT
Issued:
8/17/72
PIPER
CHEROKEE
SIX
SERVICE
MANUAL
2F11