Yamaha MX800V - Checking the Ignition Spark Gap

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ELECTRICAL
ELECTRICAL COMPONENTS
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a. Remove the TCI unit.
b. Connect the digital circuit tester () to the terminal.
c. Measure the coil resistance.
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CHECKING THE IGNITION SPARK GAP
The following procedure applies to all of the TCI units.
1. Check:
• Ignition spark gap
Out of specification  Perform the ignition system
troubleshooting, starting with step 4.
(Refer to “IGNITION SYSTEM” on page 6-1)
TIP
If the ignition spark gap is within specification, the ignition
system circuit is operating normally.
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a. Disconnect the spark plug cap “1” from the spark
plug.
b. Connect the ignition checker “2” as shown.
c. Turn the main switch to “START”.
d. Measure the ignition spark gap “a”.
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Coil resistance:
8.8–11.9 k
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Model 88 Multimeter with tachometer:
YU-A1927
• Positive tester probe 
High tension cord “1”
• Negative tester probe 
Body ground “2”
Minimum ignition spark gap:
6.0 mm (0.236 in)
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Ignition checker:
90890-06754