ELECTRICAL COMPONENTS
8-65
EAM30294
CHECKING THE IGNITION SPARK GAP
1. Check:
• Ignition spark gap
Out of specification Perform the ignition
system troubleshooting, starting with step (5).
Refer to “TROUBLESHOOTING” on page
8-3.
If the ignition spark gap is within specification,
the ignition system circuit is operating normally.
a. Remove the spark plug cap from the spark
plug.
b. Connect the ignition checker “1” as
shown.
c. Crank the engine, and measure the igni-
tion spark gap “a”.
d. Crank the engine, and gradually increase
the spark gap until a misfire occurs.
EAM30295
CHECKING THE SPARK PLUG CAP
1. Remove:
• Spark plug cap
(from the spark plug lead)
2. Check:
• Spark plug cap resistance
Out of specification Replace.
a. Connect the digital circuit tester () to the
spark plug cap.
b. Measure the spark plug cap resistance.
EAM30296
CHECKING THE IGNITION COIL
1. Disconnect:
• Ignition coil terminal
(from the sub wire harness)
• Spark plug cap
(from the ignition coil)
A. Diode 1
B. Diode 2
C. Diode 3
D. Diode 4
E. Diode 5
Minimum ignition spark gap
6.0 mm (0.24 in)
Ignition checker
90890-06754
Oppama pet–4000 spark checker
YM-34487
Sb
G/B
L/W
L/G
R
R/L
1
2
3
4
5
6
L/B
L/R
Br/W,Br
L/W
7
8
9
10
2. Spark plug cap
Resistance
7.50–12.50 k
Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with tachom-
eter
YU-A1927
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