Ignition System - Service Information; Ignition System Specifications; Ignition System Troubleshooting - KYMCO DINK 125 Service Manual

17
. IGNITION SYSTEM
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
Spark plug
Spark plug gap
Ignition timing
Ignition system
DINK 50
Spark plug
Spark plug gap
Ignition timing
Ignition system
TROUBLESHOOTING
No spark at plug
• Faulty spark plug
• Poorly connected, broken or shorted wire
• Faulty ignition switch
• Faulty ignition coil
• Faulty CDI unit
• Faulty A.C. generator
17-3
Item Standard
NGK DP7EA9
0.8～0.9 mm (0.032～0.036 in)
TPS
CDI
NGKCR7HSA
0.6～0.7mm (0.024～0.028in)
TPS NONE
CDI
Engine starts but turns poorly
• Ignition primary circuit
—Faulty ignition coil
—Poorly connected wire or connector
—Poorly contacted ignition switch
• Ignition secondary circuit
—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
DINK 50/125