15. IGNITION SYSTEM ATV 150/125
SERVICE INFORMATION
GENERAL INSTRUCTIONS
· Check the ignition system according to the sequence specified in the Troubleshooting.
· The ignition system adopts CDI unit , change gear control and the ignition timing cannot be
adjusted.
· If the timing is incorrect, inspect the CDI unit, A.C. generator, change gear control 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 17-5.
· Inspect the spark plug referring to Section 3.
SPECIFICATIONS
Item Standard
Standard type CR8E
Spark plug Hot type
Cold type
Spark plug gap 0.60.7 mm (0.0240.028 in)
"F" mark
Ignition timing 15BTDC/1,700100 rpm
Full advance
Primary coil 0.20.3
Ignition coil resistance (20) Secondary with plug cap 3.24.8 K
coil plug cap 4.25.2 K
Pulser coil resistance (20) 5060
Exciter coil resistance (20) 100120
Ignition coil primary side max. voltage 12 V min.
Pulser coil max. voltage 2.1 V min.
TESTING INSTRUMENT
Kowa Electric Tester
or commercially available electric tester with resistance over 10M/CDV
15-2
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