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I
68
5.
ELECTRICAL SYSTEM
I
"'
'
1.0
"";;
f-
Figure
5-
3.
Performance chart
Polish this area
I
M
ica
filler
Rework
necessary
Normal
condition
(when
new)
Figure
5-
4.
Dressing the
commutator
Starting
motor
Magnetizing
Plunger
coil
Fig ure
5-
5.
Starter
wiring
Use of t he
sta
rter
(1 I
If the
engine
does
no
t
start,
do not
operate
the
starter
for
longer
ha
n
l 0
seconds at each
attempt, and
allow the
s
a
rter
to rest for the
same
length of time
before
making
anot
her attempt.
(21
Do
not
use
the
sta
rter
with the
headlmmp
turned
on.
(31
If the ove
r
running
clutch
is
d efective
and t
he
starter is
motorized after
th
e
engi
ne starts,
re-
pair it immediately to
prevent starter damage.
1.
TROUBLE SHOOTING AND REPAIR
0
Engine does
not
t ur
n
ove
r when th
e
starter
sw itch button is
depressed.
l
.
The
click
of the
starter re
lay
is
not heard
when
the
starter swi tch
button is depressed.
1
1
I
Probable cause:
Poor
contact
a
t th
e
battery
terminal due to looseness or corrosion.
Cor-
rective
acti
on
:
Inspect
the terminal and if
loose,
tighten and apply a
coat of grease;
if
corroded,
remove the battery, pour hot water on
t
he
terminal t
o
disconnect and then
clean
before
reconnecting the lead
wire,
and then apply
a.
coat of grease
to
prevent corrosion
.
Check
the
EB
terminal
particularly
.
1
21
Probable cause
:
Battery
electrolyt
e level low.
Check
the electrolyte level
and if be
low
the
lower
leve
l
ma
rk,
add
distilled
water to the
upper level.
!31
Check
the
electro ly
te for
proper
specific gravity.
(4
)
When th
e starter switch button
is making poor
contact
,
disassemble
the
switch
and
c lean.
If
th
e tro
uble
is not
due
to t he
causes
above,
take
it
to
a
specia list.
In
most
cases,
the
cause
is
due
to
worn brushes or
dirty
commutator.
A
brush
worn
to less than
1/
3
should
be rep
laced
with a
genuine
part.
W
hen
dirty commutator is the
cause,
polish with
a fine
sandpaper
and
clean
the
carbon
from
t
he mica insulator
as
shown in
Fig.
5.4
(Fig.
5-
4)
0
Start er magnetic switch
fails
to op
erate.
l
.
Fi
rst, check to
assure
that
the
switch
is
on
and
then
perform
the inspectio·n
by
the
following pro-
cedure.
(a)
Connect
one
lead
of
t he
starter magnetic
switch
to
th
e
EB
termina
l
of
the battery and
t
he
other
lead to
the ground
and
if an
energizing
click
sound is
not
heard
:
(
l
I
The p
lunger
coil is
defective due to a
broken
wire,
therefore,
replace the
coil.
However, if
an energizing
click is heard
in the
starter
relay, the defect is
a poor contact
in
the
starter
switch button or the contact plate w it hin
the
magnetic
switch, therefore, disassemble the
part
and clean
the contact
areas.
(Fig.
5-5)
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Troubleshooting
