TROUBLE SHOOTING
Spark plug does not emit sparks.
UNUSUAL CONDITION
POSSIBLE CAUSES (START FROM 1 AND GO THROUGH LIST IN ORDER)
1. Cranking speed is low.
-
Battery is low or kick power is weak.
2. Poorly connected connectors or an open circuit in ignition
system
3. Faulty ignition coil
4. Faulty CDI unit(in case when above No. 1~4 are normal)
1. Incorrect peak voltage adaptor connections.
2. Faulty ignition switch.
3. Loose or poorly connected CDI unit connector.
4. Open circuit or poor connection in ground cord of the CDI unit.
5. Faulty CDI unit(in case when above No.1~5 are normal)
1. Cranking speed is too slow
- Battery is undercharged(or operating force of the kick starter
is weak)
1. Faulty spark plug or leaking ignition coil secondary current
ampere
2. Faulty ignition coil.
1. Cranking speed is too slow
- Battery is undercharged(or operating force of the kick starter
is weak)
Low peak voltage.
No peak voltage.
Low peak voltage.
Peak voltage is normal, nut no spark
jump at plug.
No peak voltage.
IGNITION COIL PRIMAR
Y V
O
L
T
AGE
PULSE GENERA
T
O
R
EXCITE COIL
IGNITION SYSTEM
Summary of Contents for S4 50cc
Page 1: ......
Page 2: ......
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Page 13: ...SERVICE INFORMATION SPEEDOMETER WINKER RELAY HORN KEY SET MASTER CYLINDER BRAKE HOSE...
Page 34: ...M E M O...
Page 44: ...M E M O...
Page 52: ...M E M O...
Page 64: ...M E M O...
Page 68: ...BELTTYPECONTINUOUSLYVARIABLE TRANSMISSION KICKSTARTER...
Page 83: ...M E M O...
Page 84: ...A C GENERATOR RH CRANK CASE COVER...
Page 90: ...CYLINDER HEAD VALVES...
Page 103: ...M E M O...
Page 104: ...CYLINDER PISTON...
Page 111: ...M E M O...
Page 112: ...TRANSMISSION CRANKSHAFT CRANKCASE...
Page 123: ...M E M O...
Page 124: ...FRONT WHEEL FRONT BRAKE FRONT FORK STEERING STEM...
Page 147: ...M E M O...
Page 148: ...REAR WHEEL REAR BRAKE REAR CUSHION...
Page 167: ...MEMO...
Page 186: ...MEMO...
Page 187: ...2010 03 PRINTED 2010 03 PUBLICATION C CO OP PY Y P PR RO OH HI IB BI IT T SERVICEMANUAL...
Page 188: ......