Linhai 2004 ATV 260, Service Manual

Page: 224 / 362

CHAPTER 3C ENGINE 100/125/150/200
SERVICE MANUAL09.0
CHAPTER 3C ENGINE PAGE.3C - 32 -
3.7 IGNITION SYSTEM
3.7.1 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
spark plug gap 0.6-0.7mm
spark
plug
angle Maximum advance in “F”
position 13°±1°(1700r/min)
Primary coil 0.1-1.0
Ω
Wit
h
ca
p 7-9k
Ω
Ignition coil
resistance(20
℃
)
S
e
c
o
n
d
ar
y
Wit
ho
ut
ca
p 3-4k
Ω
Pickup coil resistance(20
℃
) 80-160
Ω
Primary Ignition coil peak voltage Over 120V
Pickup coil peak voltage Over 2.1V
3.7.2 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