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84
F
ig. 3-
4
C
!
)
Spark plug
i
No
ise
suppressor
cap
Fig. 3·5 (1
)
Attach the
cord to fram
e
(?)
Test lamp
(3)
Black
lead
from the
g
enerator
Fig
. 3
-6
OJ
Roto
r
@
Cam
@)
Sna
p
washer
@
Governor weight
(2)
Governor spring
A.
I
nspection of Spark
C ha
racteristic
The use
of the
A.
C.
ignition
system
makes
it
im·
perative that
the
inspection
of
the ignition
coi
l
be
made
by
using
the
A.
C.
generetor.
1.
First,
check
to see
that
the high vo
l
tage
is
being
delivered
to
the
spark
plug. Ground
the
spark
plug
on
the engine as shown in
Fig.
3
-
4
and perform
the
starting process.
If
bluish
white
spark
is seen jump-
ing across the plug points, it is an 1nchcat1on
that
the spark
plug.
ignition
coil,
flywhee
l,
A. C.
generator
are in good condition.
If
there are no sparks: one or
more
of
the
components
are
defect
i
ve.
2.
T
he pr imary
co il
may
be
checked fo
r
condition by
t
he
use
of a
lamp.
Connect a
6
V-
3 W
bulb
across the black lead
from the generator
and the
ground and start
the
engine. If the bulb does not light
up,
there is an
opening in the black lead
or
else
the
coil is defec-
tive.
However, if the
t
he
bulb continues to
stay
lit, the ignition
coi
l
or
the
breaker point
is
defec-
t ive. (Fig.
3
-
5
)
Spe
cif ication and
Performance
Type:
A.
C. ignition
system
Ignition
charac
teristics
:
Coupled with
the
Denso
A.
C.
generator
No.
0-38000-
074-
0
Engine RPM
I
Spark
length/
3
point spark gap tester
1.000
-1
5mm
(
0 .1968
in)
min.
3,000
8mm
(
0.3150
in)
min.
B.
Inspection of
Governor
The cam
should
move
smoo
thly
when
governor
we ight is forced in
the direction of the
arrow
(Fig. 3
·
6
)
and
should
also return smoothly
when
released. If
the
operation is
not
smooth, remove the snap
washer
and
clean the inside of
the
cam,
and
check to see
that
the
cam inside surface is
not scratched
or coated
with
metallic dust.
When assemblying,
apply
a coa
t
ing
of
grease
t
o
the
inside
of
the
cam.
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Troubleshooting
