Service Information - KYMCO Mongoose/KXR 250 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 ignition unit, change gear control and the ignition timing cannot be
adjusted.
• If the timing is incorrect, inspect the ignition unit, A.C. generator, change gear control and
replace any faulty parts. Inspect the ignition unit with a ignition unit 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 spark plug referring to chapter 3.
SPECIFICATIONS
Spark plug
Spark plug gap
Ignition timing
Ignition coil resistance (20 )
Pulser coil resistance (20 )
Ignition coil primary side max. voltage
Pulser coil max. voltage
Exciter coil max. voltage
TESTING INSTRUMENT
Commercially available electric tester with resistance over 10MΩ/CDV.
Item
Standard type
"F" mark
Full advance
Primary coil
Secondary without plug cap
coil
with plug cap
Mongoose/KXR 250
Standard
DPR7EA-9
0.6～0.7mm
5º±1ºBTDC/2000RPM
3.4～4.1Ω
14.45KΩ
19.8KΩ
105～110Ω
14V
1.6V
14V
17-2