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II Ignition System
Preparatory data-------------------2.1
Fault diagnosis--------------------2.2
Ignition system inspection-------2.3
2.1 Preparatory Data
Precautions on operation
1. Ignition system inspection: please perform inspection in the sequence listed in the fault diagnosis table.
2. Ignition system uses electronic-type automatic timing device, which is solidified in the CDI assembly, so it is
unnecessary to adjust the ignition time.
3. Ignition system inspection: please perform inspection in accordance with the sequence listed in the fault diagnosis
table.
4. Ignition system CDI shall not be dropped and hung, or heavily knocked (this is also the main reason for its failure).
Pay special attention to this while removing it.
5. Most of the ignition system problem due to poor contact of sockets. Please check first if parts of the connector are
well contacted.
6. Check if heat value of spark plug is proper. Improper spark plug may result in unsmooth engine running or burn of
spark plug.
7. The maximum voltage is taken to introduce inspection items in this Part. Inspection methods for impedance value
of ignition coil are also recorded and judged.
8. Check ignition switch according to the continuity test table.
9. Remove magneto and stator on operation instructions.
Preparatory data
Spark plug
Spark plug clearance
Ignition coil impedance value（20℃）
Impedance value of charging coil（20℃）
Tools
Accessory for voltmeter with maximum range
Multimeter
Item
Secondary coil
Impedance value of trigger（20℃）
Ignition coil primary peak voltage
Trigger voltage
CDI assembly--------------2.4
Ignition coil----------------2.5
Trigger----------------------2.6
Standard
Primary coil
With spark plug cap
Without spark plug cap
Standard Value
NGK DR8EA
0.6-0.7mm
0.4Ω±10％
8-11KΩ
3-5.5KΩ
100-200Ω
600-800Ω
300V
Higher than 1.7V
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