17. IGNITION SYSTEM
17-3
DINK 50/125
SERVICE INFORMATION
GENERAL INSTRUCTIONS
• Check the ignition system according to the sequence specified in the Troubleshooting.
• The ignition system adopts CDI unit and the ignition timing cannot be adjusted.
• If the timing is incorrect, inspect the CDI unit and A.C. generator and replace any faulty parts.
Inspect the CDI unit with a CDI tester
• Loose connector and poor wire connection are the main causes of faulty ignition system. Check
each connector before operation.
• Use of spark plug with improper heat range is the main cause of poor engine performance.
• The inspections in this section are focused on maximum voltage. The inspection of ignition coil
resistance is also described in this chapter.
• Inspect the ignition switch according to the continuity table specified in page
20-3.
• Inspect the spark plug referring to chapter 3.
• Remove the A.C. generator and pulser coil referring to chapter 10.
SPECIFICATIONS
DINK 125 Item Standard
Spark plug NGK DP7EA9
Spark plug gap 0.8～0.9 mm (0.032～0.036 in)
Ignition timing TPS
Ignition system CDI
DINK 50
Spark plug NGKCR7HSA
Spark plug gap 0.6～0.7mm (0.024～0.028in)
Ignition timing TPS NONE
Ignition system CDI
TROUBLESHOOTING
No spark at plug Engine starts but turns poorly
• Faulty spark plug • Ignition primary circuit
• Poorly connected, broken or shorted wire —Faulty ignition coil
• Faulty ignition switch —Poorly connected wire or connector
• Faulty ignition coil —Poorly contacted ignition switch
• Faulty CDI unit • Ignition secondary circuit
• Faulty A.C. generator —Faulty ignition coil
—Faulty spark plug
—Faulty high-tension wire
—Poorly insulated plug cap
• Improper ignition timing
—Faulty A.C. generator
—Stator not installed properly
—Faulty CDI unit
To Next Page
