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7-3 ELECTRICAL
SYSTEM
IGNITION SYSTEM
DESCRIPTION
The fully transistorized ignition
system consists of a signal generator, Igniter, ignition coils, and swrk
plugs.
The
signal generator comprises one rotor and two pickup coils.
The signal
generator is mounted
a t
the right end of the crankshaft, The output of the signal generator goes
to the Igniter unit, where it turns ON and
OFF
the
transistor
alternately.
As the
transistor is turned
ON
and
OFF,
the current passing through the primary winding of the ignition coil is also turned
OFF and ON
accordingly, thus i t induces the
secondary current on
the ignition coil secondary windings and produce the
spark between spark plug gaps.
ignition sw~tch
I
z
0
W
Battery
I
l gniter
I
I
I
I
B/Y
u
I
Signal gpnerator
F
m
-
-
INSPECTION
IGNITION COILS (Checking with
Electro Tester)
Using the
electro
tester,
test each ignition coil for
sparking
performance. The
test
connection is
as
indicated.
Make sure that the three-needle sparking
distance is
a t
least
8
mm.
If no
sparking
or
orange color sparking occurs with
this
much
gap,
then it is defective and mufi be
replaced.
STD Spark performance
?
8 rnm
(0.3
in)
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