Starter Circuit Functioning; The Starte Fails To Work; Diagnostics - Yamaha SZR 660 Service Manual

ELECTRICAL STARTING SYSTEM
ELEC
£3
STARTER
CIRCUIT
FUNCTIONING
The
starting circuit of this
model
consists
of
the
starter,
its
relay
switch and
the
1
diode,
if
the
engine
stop
emergency
switch and main switch are both
on
f
the starter
can
only
work
if:
The transmission
is in
neutral (neutral
switch on)
or
if
the clutch (ever
is
completely up against the handle-
bar (clutch switch on)
and
the side stand
is
raised
(stand switch on).
The
1
diode prevents the starterfrom
starting
when
none
of
these
conditions
is
met. in this
case
the
starter
feed
is off.
When
one or both
of
these
conditions are met, the motor engine
may
be started
by pressing the
start
switch.
ELECTRICAL STARTING SYSTEM
DIAGNOSTICS
THE STARTER
FAILS
TO
WORK
Procedure
Check:
1.
Fuse 20A (main)
2. Battery
3.
Starter
4.
Starter relay
5.
Main
switch
6.
Engine
stop
emergency
switch
7.
Side stand
switch
8.
Neutral switch
9.
Clutch switch
10- Starter
switch
11.1 Diode
12.
Harness connection
control (entire starter
system)
NOTE:
Before
starting inspections,
remove the following
parts:
1
.
Side panels
(left
and
right)
2.
Seat
3.
Rear
cowling
4.
Fuel tank
5.
Air
filter
case
To
inspect
any
operating
faults
defects use the following special tools.
Pocket
tester:
P/N.
YU-03112
P/N*
90890-03112
1.
Fuse20A
(main).
Remove
fuse-
Connect
the
pocket tester
(£2x1) to
the
fuse.
Check fuse
continuity-
See
the
"FUSE INSPECTION
AND
RE-
PLACEMENT"
section
in
CHAPTER
3.
DISCONTINUITY
I
Replace the fuse.
v
CONTINUITY
2. Battery.
• Check
the conditions
of
the battery.
Consult the
"BATTERY INSPECTION"
sec-
tion in
CHAPTER
3.
Voltage:
12.8V
or
more
at
20°C (68°F)
INCORRECT
CORRECT
Clean
the battery terminals.
Recharge
or
replace battery.
See
the
"BATTERY INSPECTION"
section
in
CHAPTER
3.
8-21
8-22