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Table of Contents
158 MAINTENANCE-ELECTRICAL
*
lf
a fu lly
charged battery
not
in
use
loses
its
charge
after
2
to
7
days,
or
if
the specific
grav
ity
drops
mark·
edly, the battery is defective. The
self-discharge
rate
of
a
good battery is
only about
1
%
per
day.
CHARGING
SYSTEM
Charging System
~
-
-
/
---
'
\
~
Alternato
r
Rectifier
Regulator
+
Battery
There
are a
number
of important
precautions that
are
musts wh
en servicing
the charging
system
. Cautions
that
are
applied to the
individual
sections are mentioned
each section. Failure to
observe
these rules can result in
serious
system
damage.
Learn
and observe all
the
rules
in
each section.
When there are
any
problem indications
in
the charg-
ing
sys
tem
,
give
the system
a
quick
initial
inspection
or
check before starting a
series of
time
consuming
tests,
or worse yet, removing
parts
for repair or replacement.
Such
a
check
will often turn up the
source
of the trouble.
Make su
re
all connectors
in
the
circuit are
clean
and
tight. Examine
wires
for
signs
of
burning,
fraying, etc.
Poor wires
and
bad
connections
will affect
electrical
system
operation.
Check
the
alternator and
regulator/
rectifier for evidence of
physical damage.
A worn out
or
badly
sulphated
battery will
produce
numerous
prob lems
that
canno
t
be
corrected
until
the
battery
is
replaced.
ALWAYS CHECK BATTERY
CON-
DITION
BEFORE
CONDEMNING OTHER PARTS
OF THE SYSTEM. A
FULLY
CHARGED BATTERY
IS
A MUST FOR CONDUCTING ACCURATE
SYS-
TEM
TESTS.
Charging
system
mal
functions
can
be
traced
to
either
the
battery,
alternator, regulator/ rectifier,
or
the wiring.
Troubles may involve one unit or in some cases, all
units.
Never
replace a defective unit without
determining
what
CAUSED
the
failure. If
the
fa
ilure
was
brought
on
by
some
other
unit or
units, they too must be
repaired
or
replaced, or the
new replacement
will soon
fail.
Initial
inspection
Before making
th is
test, check
the
condition of the
battery
(Pg. 156).
l.f
the
battery vol
tage
is
less
than
12
volts,
charge the
batte1y. Before starting
the charging
voltage
test, warm up
the
engine
to obtain
actual alter-
nator
operating
conditions.
Lift up
the
seat.
Sec the multimeter to the
20V
DC
range,
and
connect
th
e
meter
+
lead
to
the
battery
+
termin al and
the
meter
-
lead
to
the
battery
-
terminal.
A.
Battery(+) Terminal
B. Battery
(-) Terminal
Start
the engine,
and
run
the
engine
at
the
rpm in
Table
K2.
Note the
voltage
readi
ng.
Table
K2
Charging Voltage
Meter
Connections
Read
ing
@4,000
rpm
20VDC
Meter
(+)
~Battery(+)
about
14.SV
Meter(-)
"'
Battery
(-
)
If
the
reading
is
more
than
16V,
the
regu
lator/
rec tifier
is defective,
and
should
be replaced with a
new
one.
If the reading is less than
14V,
check the alternator
output
(Pg.
159)
and
regulator/rectifier (Pg.
159) to
determine
which
part is defective.
Alternator
Alternator Construction
rf'.
(2\
\.T.1
\
.•
®----
1.
Alternator
Rotor
2.
Left Engine Cover
3.
Crankcase
4.
Starter Idle Gear
5.
Crankshaft
6.
Ball Bearing
7.
8.
9.
10.
11.
(
K5_)
I
-
-+--'J.,
Starter Clutch
Screw
Rotor
Bolt
Stator
Al ternator Cover

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Table of Contents

   Also See for Kawasaki Z250 1981

This manual is also suitable for:

Kz350 1981

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