Lycomin 0-360 - Page 123

TEXTRON
LYCOMING
OPERATOR'S
MANUAL
0-360
and
ASSOCIATED
MODELS
SECTION
5
(3)
Using
a battery
powered
timing
light,
attach
the
positive
lead
to
a
suitable
terminal
connected
to the
switch
terminal
of the
magneto
and the
negative
lead
to any
unpainted
portion
of
the engine.
Rotate
the
magneto
in its
mounting
flange
to a point
where
the light
comes
on,
then slowly
turn
it in
the opposite
direction
until
the light
goes
out.
Bring
the
magneto
back
slowly
until
the
light
just
comes
on.
Repeat
this with
the second
magneto.
(4) 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.
(5) Dual
Magnetos
- Remove
the
timing
window
plug
from
the
most
convenient
side
of
the housing
and
the plug
from
the
rotor
viewing
location
in the
center
of
the housing.
(6)
Turn
the
rotating
magnet
drive
shaft
in
direction
of
normal
rotation
until
the painted
tooth of
the distributor
gear
is centered
in
the
timing
hole. Observe
that
at this
time the
built in pointer
just
ahead
of
the rotor
viewing
window
aligns with
either
the
L or
R
(depending
on rotation).
(7)
Hold
the magneto
in this
position
and
install
gasket
and
magnetos.
Secure
with
clamps,
washers
and nuts
tightened
only
finger
tight.
(8) Using
a battery
powered
timing
light,
attach
one
positive
lead to
left switch
terminal,
one
positive
lead to right
switch
terminal
and
the ground
lead
to the
magneto
housing.
(9) Turn
the
entire
magneto
in direction
of rotation
until
the
timing
light comes
on,
then
slowly
turn it
in the opposite
direction
until
the
light goes
out. Bring
the
magneto
back slowly
until
the light
just
comes on.
(10)
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
lights just
come
on. Both
lights
should
go on
2
°
of
No. 1 engine
firing position.
5-3