8-103
ELECTRICAL COMPONENTS
c. Measure the primary coil resistance.
2. Check:
• Secondary coil resistance
Out of specification Replace.
a. Disconnect the spark plug cap from the
ignition coil.
b. Connect the digital circuit tester () to the
ignition coil as shown.
c. Measure the secondary coil resistance.
EAS30556
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-
5.
If the ignition spark gap is within specification,
the ignition system circuit is operating normally.
a. Disconnect the spark plug cap from the
spark plug.
b. Connect the ignition checker “1” as shown.
c. Push the ON/start switch and the engine
stop switch to “ ”.
d. Measure the ignition spark gap “a”.
e. Crank the engine by pushing the ON/start
switch and gradually increase the spark
gap until a misfire occurs.
Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with
tachometer
YU-A1927
• Positive tester probe
Orange “1”
• Negative tester probe
Red/Black “2”
Secondary coil resistance
12.00–18.00 k
Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with
tachometer
YU-A1927
• Positive tester probe
Spark plug lead “1”
• Negative tester probe
Spark plug lead “2”
Spark plug gap
0.7–0.8 mm (0.028–0.031 in)
Ignition checker
90890-06754
Oppama pet–4000 spark checker
YM-34487
2. Spark plug cap
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