ELECT
RICAL SYSTEM
2.
Rem
ove
th
e left-ha
nd
fr
ame
cover.
3.
Di
sco
nn
ect the 2-pin electrical conneClOr
(I
orange and I green wire) from the signal generator
(A,
Figur
e
17
).
4. Use an ohmmeter sct at R x 1000 a
nd
check
the resistan
ce
between both wires
in
the elect
ri
cal
connector. The specified resistance is 200-240
ohms.
5.
If the resistance shown is less than specified or
th
ere is no ind icated resistance
(i
nfinite resistance)
between the 2 wires. the sign
al
gcncralOr has an
open or short and mu
st
be replaced as described
in Ihis chapter.
6.
If the signal generator checks o
ut
o
kay.
reco
nn
ect the electrical
co
nnector. Make s
ur
e the
electrical co
nn
ector is frce of corrosion and is
li
ght.
7.
Install the left-hand
fr
ame cover and the seat.
Signal
Ge
ner
ator
RemovaUlnsta
ll
ation
Th
e signal generator
is
part
of
the ailernator
stator coil assembly and cannot be replaced
separatel
y.
If
the signal generalOr is faulty, the
alternator stator assembly must be replaced as
described
in
this chapter.
Ignition Coil
Testing
The
ignition coil is a form
of
transform
er
which
develops the
hi
gh
vo
ltage required to jump the
spark plug gap. The o
nl
y maintenance required is
that of keeping the electrical co
nn
ections clean a
nd
ti
g
ht
a
nd
occasionally checking to see that the coil
is mounted securel
y.
If the
co
ndition
of
the coil is doubtful. there are
several checks which may
be
made.
NOTE
Th
e spark plug must ground out
against a piece
of
bare metal
on
th
e
engine or frame.
First as a quick check
of
coil condition.
perf
or
m
the
foll
owing:
a. Rem
ove
the spark plug from the
cy
linder as
described under Spark P
lug
Removal/Cleaning
in
Chapter
Thr
ee.
217
b.
Connect the spark plug wire and connector to
the spark plug and
tou
ch the spark plug's base
to a good ground such as the engine cylinder
head (
Figur
e
18
). Make
sure
the spark
pl
ug
is
against bare metal. not a painted su rface.
Po
si
ti
on the spark plug so you can see the
electrodes.
WARNING
If
it
is necessary
to
hold the high
1'Ol
tage leall, do so with an insufated
pair
of
pliers.
17,e
high raftage
generatell
by
the signal
ge
nerator
could produce serious or flllal shocks.
c. Turn the eng
in
e
ove
r with the starter. If a fat
blue spark occurs. the
co
il
is
in
good
condition;
if
not. proceed as
foll
ows. Make
sure that you arc using a known
good
spark
pl
ug
for this test. If the spark plug used is
defective. the test results will
be
incorrect.
d. Reinsta
ll
the spark plug
in
the
cy
linder head
and connect the high voltage lead.
NOTE
In
order
to
get accurate resistance
measurements,
th
e coif nmst be warm
(minimum temperature is 20° CI68°
F
).
If necessa
ry
, start the engine and
let it warm up
to
normal operating
temperature.
1.
Remove the seat as described
in
C
ha
pter
Twel
ve.
2. Remove the fuel ta
nk
as desc
ri
bed
in
Chapter
Seven.
3.
Disconnect all ignition coil wires (including the
spark plug lead from the spark p
lu
g) before testing.
NOTE
In
Step 4 and Step 5. the resistance
specification is not as important as the
fact
th
at there is continuity between the
terminals. If the ignition coi/lI'indin
gs
are
in
good condition. the resistance
mlues lI'ilI be close to those specified.
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