B.
Connect
ono timing light
lead
to
the wire
that has
iust
been wrapped
around
spark
plug
terminal.
C. Connect
second
timing
light Iead
to hot
(ungrounded)
side of battery
-
see timing light
instructions
for
bat-
tery
size, wiring,
etc.
D.
Connect
third
timing
light
lead
to
ground.
E. Remove
snap button,
rotate
(by
hand)
en$ne until
S
mark visible
-
chalk
S
line
for
easy
reading.
F. Start
engine, run
at
f200-1800 RPM,
aim
timing light into sight hole
-
light
should fash
itrst
as S
mark is
centered in sight
hole or even
with eenter mark
on bearing
plate
or blower housing.
G.
If timing
is ofi
-
remove breaker
point
cover, loosen
gap
adiusting
screw, shift
breaker
plate
until S
mark
is exactly
centered. Retighten
adjusting
screw
before replacing
breaker
point
cover.
3IEAKERLESS'
AIIERNATOR
IGNIIION
The
Kohler
Breakerless-Alternator
Ignition system
uses solid
state devices which
eliminate the need
for
mechanically operated
breaker
points.
With the breakerless
ignition,
timing
is
permanently
set for the lifetime
of
the
engine. Except
for the
spark
plug,
the
entire
system is virtually
service-free. The svstem
provides
an instan-
taneous,
high
energy spark which not only prolongs
the
service life of
the
plug
but makes
spark
gap
and
even
condition of the
plug
less
critical.
The breakerless
ignition syst€m includes
four maior
components
which are:
ignition winding
(on
alternator
stator), trigger module, ignition
coil assembly
and special
flywheel with
trigger
projection.
The system also
in.
cludes the
conventional spark
plug
and lead,
plus
an ignition
switch. The ignition
winding is separirte
from the
other AC windings
on the
alternator
stator
*
the
other
windings
are used for
battery
charging and
other
pur-
poses
(discussed
in
the
Electrical
System Section).
The
trigger
module
includes
three diodes, a
resistor,
a
sensing
coil and magnet,
plus
an electronic
switch
called
an
SCR. The trigger
module has
two clip-on type terminals.
The
terminal marked
A must be connected
to
the alternator
while
the I terminal
is connected to
the ignition coil
-
improper hook-up
will
cause damage
to the
electronic devices.
The ignition
coil
assembly
includes
the capacitor
and
a
pulse
transformer arrangement
similar
to the con-
ventional high tension
coil
with
primary
and secondary windings.
The fywheel has
a special
prgiection
for trig-
gering
the
ignition.
AIR
CAP:
The air
gap
between
trigger
assembly and
proiection
oq the flywheel is usually
set
at about
.015"
(*.005).Although
the actual
gap
setting
is not critical
to
operation
at normal
speeds,
decreasing the
gap
to .01ff,
may
promote
faster
starting under
certain conditions. If a
closer
gap
is
desired,
rotate
fywheel
until
proiection
is
adacent
to the trigger
assembly.
To adjust,
loosen capscrews
on trigger bracket
and move
trigger
closer to
pro-
jectiol
until
,01f'
gap
is
measured
on feeler
gauge.
Do
not
set
closer than .010',
and make sure
fat
surfaces on
trigger and profection
are
parallel
to each other.
Retighten
capscrews after
gap
is readiusted.
TROT BT
E
nNALYSIS:
In
case of ignition
trorrble, make
the following
tests in the sequence listed
until
the
faulty
part
is loeated.
Use
an
ohmmeter
or
flashlight type
continuity tester
to
perform
the ignition
Coil and
Trigger Module
tests.
Spark PIug Test
Remove
plug
from head,
Ieave high tension lead
connected
to
plug
ground
plug
on
engine
&en
crank ea$ne
fast enough
to
produce
spark
-
if
spark
does not
appear between
electrodes,
use new
plug
and
repeat test.
If
spark is
still not evident,
proceed
with
further tests.
Ignitioa C,oil
Assembly
Tesb:
(A)
-
Remove
high
tension
lead
from
terminal on
coil.
Imert
one tester
lead
in
coil
terminal
and the
other
to the coil
mounting bracket. Continuity
through the
coil should be indicated.
(B)
-
I3
-
To Next Page
Loading...
