17-1
17. IGNITION SYSTEM
SERVICE INFORMATION
GENERAL SAFETY
● Follow the steps described in the troubleshooting flow chart when servicing the ignition system.
● The CDI unit may be damage if dropped. Also, if the connector is disconnected when current is flowing, the excessive
voltage may damage the unit. Always turn off the ignition switch before servicing.
● The CDI unit use an electrically controlled ignition timing system. No adjustments can be made to the ignition timing.
● Use spark plug of the correct heat range. Using spark plug with an incorrect heat range can damage the engine.
● Connect the same color cords. Pay particular attention to colors prior to removing wiring. Connect the same color
couplers.
● A faulty ignition system is often related to poorly connected connectors. Check those connections before proceeding.
● This manual gives explanations on inspections to receive peak voltage. As inspections for coil resistance values are also
included, it may be difficult to make a correct determination.
● Conduct inspection on the main switch by referring to the wiring diagram continuity chart.
SPECIFICATIOS
17
SERVICE INFORMATION
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17-1
TROUBLESHOOTING
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17-2
IGNITION COIL INSPECTION
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17-3
A.C. GENERATOR INSPECTION
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17-4
IGNITION UNIT
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17-4
TOOLS
DIGITAL TESTER
PVA MULTI-TESTER
CDI TESTER
BATTERY TESTER
ITEM
PRIMARY COIL
SECONDARY
COIL
WITHOUT PLUG CAP
WITH PLUG CAP
SPARK PLUG
SPARK PLUG GAP
IGNITION COIL RESISTANCE
PULSER COIL RESISTANCE
STANDARD VALUE
NGK DPR7EA9
0.8~1.0mm
1.5~3.5
12~16
17~21
50~170
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