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Kawasaki KZ1300-A1 Quick Reference Manual Page 236

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MAINTENENCE--ELECTRICAL
NOTE:
The actual meter reading varies with the meter
used and the individual
rectifier,
but, generally
speaking,
the lower reading should be
from
zero to the first 1/3 of
the
scale.
Regu/ator test
To test the regulator out of circuit, use three 12V
batteries and a test light made from a 12V 3 - 6W bulb
in a socket with
leads.
eRemove
the regulator/rectifier
from
the
frame
.
eUsing
aux
il iary
leads,
connect one of the yellow leads
to the battery
(+)
terminal
,
and connect the test
light
between the black lead and the battery
(-
)
terminal.
At this time the bulb should not be lit.
~ :r~;
::sta
li~::r;~r~~~:e;nt~n:~:~:~~ ~~~
regulator/rectifier
from excessive current. Do not use
an ammeter
instead
of a test light.
eConnect
the brown lead to the other battery (+) termi-
nal and connect the black lead to the battery
(-
)
terminal momentarily. At this time the bulb should
not be lit.
eTo
apply 24V to the regulator/rectifier, connect two
12V batteries in
series,
and connect the brown lead
to the battery (+) terminal and the black lead to the
battery
(-
) terminal momentarily
.
The bulb should
now light and stay on until the bulb circuit is opened
.
~ ~:r;~~a~P:!\;t~r~s !:~~ie~~ t~~I::~UI!~
tor/rectifier may be damaged. Do not apply 24 V more
than a few
seconds.
If 24 volts is applied for more than
a
few seconds,
the regulator/rectifier may be damaged.
eRepeat
the above three steps
for
other two
yellow
leads
(in the 4-pin connector which leads to the
regulator/
rectifier) .
eReplace
the regulator/rectifier if the bulb does not light
as described above.
c:K:J])
Regulator Test
Regulator/
Rectifier
Test Bulb
\1
.....
./
NOTE
:
The above test is not foolproof.
If
the above
checks
show
the regulator/rectifier is not damaged
,
but
there
is
still trouble in the changing system, first carefully
inspect the alternator, battery, wiring, and all connec-
tions.
Replace the regulator/rectifier if all these other
components turn out
good
.
IGNITION SYSTEM
The ignition system for this
model
is essentially a
battery and coil ignition system where the
batte
ry
supplies the current for the
primary
circuit in the
ignition system.
However,
this ignition system is tran
-
sistorized and controls the current for the
primary
circuit by use of a solid state electronic switching unit
called a
Darlington power
transistor.
The power tran-
sistors are triggered by pick-up coils, and there are no
mechanical
breaker points, so the only periodic
maintenance needed
is automatic timing advancer
lubrication (Pg. 240).
Since
contact
breaker heel
wear
(with resultant retarded ignition timing), and
breaker
point
pitting or burning are eliminated,
periodic
ins-
pection
and adjustment of the ignition
timing
are
not required.
The working electrical part of the ignition system
consists of a battery
,
three
pick-up
coils, an IC igniter,
three ignition coils, a resistor, and six spark
plugs.
To
advance the ignition timing as engine rpm rises, an
automatic centrifugal-type timing advancer is used. The
resistor limits the amount of
primary
current flowing
through the coil to a safe maximum to
prevent
over-
heating of the ignition coil
primary
winding whose
electrical resistance is low to ensure a high
performance
spark. The ignition system comprises three
parts;
one
part
fires #1 and
#fJ cylinders, and the other
parts
#2
and #5 cylinders, and #3 and
#4
cylinders.
A schematic
wiring diagram of one third the system is shown in Fig.
K14.
The other 2
parts
of the system are identical.
Each works as follows
.
The pick-up coil assembly (a magnetic impulse
generator)
resembles
the standard contact breaker
assembly in most respects except that the three sets
of breaker
points
have been eliminated
.
In their
places
is an iron timing rotor and three
magnetic pick-up
coils.
Each
pick-up
coil assembly consists
of
a
pair
of
perma-
nent
magnets and a
pick-up
coil on a
mounting plate
.
The timing rotor which is attached to the timing advancer
has one
projection
.
As the
projection
on the timing rotor
passes
through the magnetic field created by the
per-
manent magnets on the mounting plate, a magnetic
field alternately builds up and
collapses.
Each time
the projection
passes
a
pick-up
coil core an electric
current is developed. Each voltage
pulse
is 'conducted
to the IC igniter where it is amplified and switches the
Darlington power
transistor on and off to control the
primary
current.
236

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