8 - 9
–+
ELEC
IGNITION SYSTEM
BAD
NOTE:
• Before troubleshooting, remove the following part(-s):
1)fuel tank
2)air filter case
3)bottom cowling
4)front cowling
5)rear cowling
• Troubleshoot with the following special tool(-s).
Replace the ECU.
Ignition checker
90890-06754
Pocket tester
90890-03112
MEASURING THE IGNITION SPARK GAP
The following procedure applies to all of
the spark plugs.
• Disconnect the ignition coil from the spark
plug.
• Connect the ignition checker 1 as shown.
2 Ignition coil
• Set the main switch to “ON”.
• Measure the ignition spark gap a.
• Crank the engine by pushing the start
switch and gradually increase the spark
gap until a misfire occurs.
• Is there a spark and is the spark gap
within specification?
Yes → Good.
No → Measure the ignition coil resistance.
Minimum ignition spark gap
6 mm (0.24 in)
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