RED OR
WHITE TOOTH
PIPER
CHEROKEE
SIX
SERVICE
MANUAL
NOTE
In order to turn the shaft on
an impulse coupling magneto,
depress the pawl on the im-
pulse coupling with the finger.
c. Using
a battery
powered timing
light, attach
the positive lead
to a suit-
able terminal connected to the ground
terminal of the
magneto and the
negative
lead to anyunpainted
portion
of the en-
gine. Rotate the magneto in its mount-
ing flange
to a point
where the light
comes on, then slowly turn it in the op -
posite
direction until
the light goes
out.
Bring the magneto
back slowly
until the
light just comes
on. Repeat
this with
the second magneto.
TIMING MARK
Figure
7A-14. Magneto
Timing Marks
NOTE
AC timing
lights operate in the
reverse manner as de-
scribed above, the light goes out when the breaker
points open.
d. After both
magnetos have
been timed, check,
as described
below, to as-
certain
that both
magnetos
are set to
fire together.
e. Back off the crankshaft a few
degrees, the timing lights should
go out. Bring
the crankshaft
slowly back in
direction of normal
rotation until
the timing mark
and
the hole in the starter housing are
in alignment. At this point, both
lights
should go on simultaneously.
Tighten nuts to specified
torque.
f . After magnetos
have beenproperly
timed,
replace breaker
cover and secure.
g.
Install the ground lead and the
retard spark lead on the left
magneto.
h. Place the harness terminal
plate on the magneto and tighten
nut around the
plate alternately to seat
cover squarely on magneto. Torque
nuts to 18 to 22 inch
pounds.
POWER PLANT
Issued:
8/17/72
2H5
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