15. IGNITION SYSTEM
15-2
VENOX250/250i
SERVICE INFORMATION
GENERAL INSTRUCTIONS
x Inspect the ignition system according to the sequence specified in the Troubleshooting 15-3.
x The ignition system has a CPU in the CDI unit, so the ignition timing is not adjustable.
x Do not drop or impact the CDI unit with strong force to avoid damage. Be careful when
removing it.
x Loose connector and poor wire connection are the main causes of faulty ignition system. Check
each connector before operation.
x Check the spark plug heat range. Use of spark plug with improper heat range is the main cause of
poor engine performance or burned engine.
x Perform inspections according to the servicing procedures specified in each section.
SPECIFICATIONS
Item Standard
Standard type CR8E
Hot type CR7E
Spark plug
Cold type CR9E
Spark plug gap 0.6阡0.7mm
Ignition timing BTDC 10°±2°/1000rpm
Ignition type Fully Transistor Ignition
Primary coil 3.57:~4.83:
Ignition coil resistance
(20℃)
Secondary
coil
with plug cap 14.96K:~20.24 K:
Pulser coil resistance (20℃) 396阡594:
Ignition timing(VENOX 250I)--- BTDC 10°±2°/1300rpm
TESTING INSTRUMENT
Electric Tester
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