8-258
ENGINE ELECTRICAL
-
Ignition
Svstem
7EL009
6
INSPECTION
SPARK PLUG
Check the plug gap and replace if the limit is exceeded.
Standard value:
1.0
-
1.1 mm
(039
-
.043
in.)
Limit: 1.3 mm
(.051
in.)
Caution
1.
Do not attempt to adjust the gap of the platinum plug.
2. Cleaning of the platinum plug may damage the plati-
num tip. Therefore, if carbon deposits must be re-
moved, use a plug cleaner and complete cleaning
within 20 seconds for protection of the electrode. Do
not use wire brushes.
SPARK PLUG CABLE
(1) Check cap and coating for cracks.
(2) Measure resistance.
Limit: Max. 22
k0
IGNITION POWER TRANSISTOR
NOTE
An analog-type circuit tester should be used.
No. 1
-
No. 4 coil side
(1) Connect the negative
(-)
terminal of the
1.5V
power supply
to terminal
@
of the ignition power transistor; then check
whether there is continuity between terminal
@
and
terminal
@
when terminal
@
and the positive (+) terminal
are connected and disconnected.
NOTE
Connect the
(-)
probe of the circuit tester to terminal
0.
7EL0081
Terminal 3 and (+) terminal
Connected
Terminal 13 and terminal 4
Continuity
7EL008
r
Unconnected
I
No continuitv
I
(2) Replace the ignition power transistor if there is a malfunc-
tion.
No. 2
-
No. 5 coil side
(1)
Connect the negative
(-)
terminal of the
1.5V
power supply
to terminal
@
of the ignition power transistor; then check
whether there is continuity between terminal
@
and
terminal
@
when terminal
@
and the positive (+) terminal
are connected and disconnected.
NOTE
Connect the
(-)
probe of the circuit tester to terminal
0.
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