Baotian BT49QT-28, Service Manual, Page: 45 / 52

41
Primary Coil Inspection
Measure resistance between primary terminals.
Standard value: 0.21
Ω±
10% (20
℃
)
Resistance within standard value indicates good state.
Resistance “
∞
” (infinity) indicates open circuit of coil. Replace coil.
Secondary Coil Inspection
Measure primary coil resistance between terminals.
Standard value: 7
～
12k
Ω
(20
℃
)
Resistance value: “
∞
”indicates breakage of wire in coil.
Remove spark plug cover, measure resistance between wire at primary ignition
coil side and negative terminal.
Standard value: 3.1k
Ω±
10%(20
℃
)
5.
5. 5. 5.
Trigger Coil
Inspection of trigger coil can be effected on engine.
Remove motorcycle cover.
Remove trigger coil wire connector.
Measure resistance between engine side
wire blue/yellow terminal and earthing.
。
Standard value: 50
～
200
Ω
(20
℃
)
In case measured value exceeds standard
value,replace AC generator.
6. Ignition and Charging Coil
It is not necessary to remove coil while
coil inspecting.
Remove ignition and charging coil wire
connector.
Remove ignition and charging coil wire
Connector.
Measure resistance between generator side
black/red wire and motorcycle earthing.
Standard value: 400
～
800
Ω(20℃)
In case measured value exceeds standard
value, replace AC generator.