Brixton BX125 - Fault Diagnosis

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7. The maximum voltage is taken to introduce inspection items in this Part. Inspection methods for
impedance value of ignition coil are also recorded and judged.
8. Check ignition switch according to the continuity test table.
9. Remove generator and stator on operation instructions.
Service data
Item
Standard Value
Recommended Spark
plug
Standard
D8RTC
Spark plug stroke
0.5-0.7mm
Ignition coil
impedance
value (20℃)
Primary coil
0.4Ω（+/-）10％
Secondary coil
4.5-5.5KΩ
Impedance value of trigger (20℃)
100-200Ω
Ignition coil primary peak voltage
95-400V
Trigger voltage
1.7V 以上
工具 Tools
Accessories for maximum voltmeter
Multimeter
6.2 Fault Diagnosis
No sparking of spark plug
Ignition
coil
Symptom
Possible causes(Determine the cause from 1
in sequence)
When the high voltage power is too
low.
①When inner impedance is too small, use the
appointed tester to test.
②Crankshaft rpm is too low.
③ Tester is disturbed (it is normal when
several times’ measured voltages are above
the basic) .
④ Wiring of ignition system is poorly
contacted. ⑤Ignition coil is no
good.
⑥ Charging coil is bad. (Peak voltage
measurement)
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