Piper Cherokee Six - Page 382

PIPER
CHEROKEE
SIX
SERVICE
MANUAL
NOTE
The
magneto
service
instructions
in
this
manual
are
to
cover
minor
repairs
and
timing.
For
further
re-
pairs
and
adjustments
of
the
magnetos,
it is
recom-
mended
that
the
manufacturer's
service
instructions
be
followed.
7-26.
TIMING
PROCEDURE.
(Internal
Timing)
(-20
and
-200
Series
Magnetos)
When
installing
new
or
adjusting
breaker
points
and
before
timing
the
mag-
neto
to
the
engine,
it
is
important
that
the
internal
timing
of
the
magneto
be
cor-
rect.
a.
To
internally
time
the
-20
series
and
the
early
-200
series
magneto
without
the
case
in
timing
marks,
the
magneto
should
be
removed
from
the
engine
to
de-
termine
"E"
gap.
b.
To
determine
"E"
gap,
find
neutral
position
of the
magneto
drive
by
rotating
drive
coupling
in
a
left
hand
direction
until
the
red
or
white
chamfered
tooth
on
the
distributordrivegear
appears
throughthetiming
inspection
hole.
At
the
same
location,
the
drive
should
feel
to
have
fallen
into
a
notch
or
neutral
position.
c.
With
timing
plate
and
pointer
attached
(Refer
to
Figure
7-9)
and
pointer
set
at
zero,
rotate
coupling
from
neutral,
in
a left
hand
direction
10
°
.
Appearing
through
timing
hole,
ascertain
if
the
white
or
red
tooth
aligns
with
the
white
line
of
the
distributor
block.
(Refer
to
Figure
7-8.)
Alignment
may
not
vary
over
4
°
.
926
RED
OR
WHITE
TOOTH
CAM WASHER
TIMING
MARK-
Figure
7-8.
Magneto
Timing
Marks
Figure
7-9.
Timing
Pointer
POWER
PLANT
Issued:
8/17/72
2F10