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15. IGNITION SYSTEM AGILITY CITY 50
SERVICE INFORMATION ...................... 15-1 IGNITION COIL ..................................... 15-4
TROUBLESHOOTING ............................. 15-2 PULSER COIL ........................................ 15-5
CDI UNIT INSPECTION .......................... 15-3
SERVICE INFORMATION
GENERAL INSTRUCTIONS
· Check the ignition system according to the sequence specified in the Troubleshooting. ( 15-2)
· 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 section.
· Inspect the ignition switch according to the continuity table specified in page 17-3.
· Inspect the spark plug referring to Section 3.
· Remove the A.C. generator and pulser coil referring to Section 14.
SPECIFICATIONS
Item Standard
Standard type (NGK) C7HSA
Spark plug Hot type (NGK) C6HSA
Cold type (NGK) C8HSA
Spark plug gap 0.60.7mm
"F" mark 13° BTDC /1,700rpm100RPM
Ignition timing
Full advance 28° BTDC /4,000rpm100RPM
Primary coil 0.11.0
Ignition coil resistance (20) Secondary with plug cap 712K
coil without plug cap 35K
Pulser coil resistance (20) 40300
Ignition coil primary side max. voltage 12V min.
Pulser coil max. voltage 2.1V min.
TESTING INSTRUMENT
Kowa Electric Tester
or commercially available electric tester with resistance over 10M/CDV
15-1