CHAPTER 3B ENGINE 50cc/80cc
ATV SERVICE MANUAL07.0
CHAPTER 3B ENGINE PAGE 3B - 67 -
3.11 IGNITION SYSTEM
3.11.1 INSTALLATION INFORMATION
OPERATING POINTS
●
Check ignition system in accordance with the troubleshooting procedure in section 3.11.2
●
As the ignition system has an electric automatic spark control in CDI unit, there is no need for spark
advance angle adjustment.
●
Poor contact may be the cause of many ignition system faulty cases. Check all terminal
connections to be sure they are clean and tight whenever troubleshooting an electrical problem.
●
Make sure spark plug heat range is correct. Using incorrect spark plug will result in improper
engine operation or spark plug damage.
●
Peak voltage is used as reference point in tests. Record coil resistance tests.
REFERENCE STANDARD
item Standard
value
Specific spark plug
(NGK)C7HSA
(LD)A7TC
spark plug gap
0.6-0.7mm
spark plug angle
Maximum advance in “F” position
13
°±
1
°
(1500r/min)
Primary coil
0.1-1.0
Ω
With cap
7-9k
Ω
Ignition coil resistance(20
℃
)
Secondary
Without cap
3-4k
Ω
Pickup coil resistance(20
℃
) 80-160
Ω
Primary Ignition coil peak voltage
Over 120V
Pickup coil peak voltage
Over 2.1V
3.11.2 TROUBLESHOOTING
High Tension Voltage Too Low
●
Crankshaft revolution too low or battery voltage too low
●
Ignition system wiring loose
●
Faulty Ignition coil
●
Faulty CDI unit
●
Faulty pickup coil
High Tension Voltage Intermittent
●
Faulty main switch
●
Poor CDI terminal connection
●
Poor CDI ground
●
Faulty pickup coil
●
Poor high tension lead terminal connection
●
Faulty CDI unit
High Tension Voltage Normal but No Spark
●
Faulty spark plug
●
Faulty spark plug cap
No High Tension Voltage
Summary of Contents for 2005 ATV 260
Page 15: ...CHAPTER 1 GENERALINFORMATION ATV SERVICE MANUAL 07 0 CHAPTER 1 GENERAL PAGE 1 11 NOTES...
Page 37: ...CHAPTER 2 MAINTENANCE ATV SERVICE MANUA 07 0 CHAPTER 2 MAINTENANCE PAGE 2 22 NOTES...
Page 106: ...CHAPTER 3A ENGINE 260 300 cc ATV SERVICE MANUAL07 0 CHAPTER 3 ENGINE PAGE 3A 69 NOTES...
Page 157: ...CHAPTER 3B ENGINE 50cc 80cc ATV SERVICE MANUAL07 0 CHAPTER 3B ENGINE PAGE 3B 51 3 8 Carburetor...
Page 177: ...CHAPTER 3B ENGINE 50cc 80cc ATV SERVICE MANUAL07 0 CHAPTER 3B ENGINE PAGE 3B 71 NOTES...
Page 213: ...CHAPTER 3C ENGINE 100 125 150 200 SERVICE MANUAL07 0 CHAPTER 3C ENGINE PAGE 3C 36 NOTES...
Page 232: ...CHAPTER 4B CHASSIS ATV SERVICE MANUAL07 0 CHAPTER 4 CHASSIS PAGE 4B 11 NOTES...
Page 261: ...CHAPTER 5 FINAL DRIVE ATV SERVICE MANUAL 07 0 CHAPTER 5 FINAL DRIVE 5 29 NOTES...
Page 276: ...CHAPTER 6 TRANSMISSION ATV SERVICE MANUAL 07 0 CHAPTER 6 TRANSMISSION PAGE 6 15 NOTES...
Page 289: ...CHAPTER 7 BRAKES ATV SERVICE MANUAL 07 0 CHAPTER 7 BRAKES PAGE 7 13 NOTES...
Page 297: ...CHAPTER 8 ELECTRICAL ATV SERVICE MANUAL 07 0 CHAPTER 8 ELECTRICAL PAGE 8 8 CIRCUIT DIAGRAM...
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Page 340: ...ATV SERVICE MANUAL 07 0 NOTES...
Page 341: ...9B 9 939397 93...