KEEWAY 500ATV, Service Manual

Page: 191 / 218

12. IGNITION SYSTEM
12-1
Overhaul information ………………12-1 Pickup coil……………………………12-7
Ignition
system diagram……………12-2 Ignition coil……………………………12-7
Troubleshooting………………………12-3 Layout for ignition system equipment in vehicle
Inspection of ignition system………12-4 ……………………………………………12-10
Overhaul Information
Note:
Exhaust gas contains toxicant, DO NOT keep the engine run for a long time in a closed or
poorly ventilated place.
● Inspect ignition system in the order of the content in troubleshooting table
● Refer to (12-11) for ignition system diagram
● Ignition advancer is integrated in the CDI, so the ignition system will
automatically adjust ignition time.
● Be careful with CDI overhaul. Dropping or strong impact may cause damage to
CDI. In addition, over voltage may be generated on CDI and cause damage to
return circuit when removing or joining the connectors and terminals with switch
ON .Always shut the ignition switch when overhauling.
● Most of the failures of ignition system are caused by faulty contacts between
connectors and terminals. Check all the connections for any faults before
overhauling.
● Select spark plug of proper heat value. Improper spark plug may cause malfunction
or damage of engine.
●
Refer to Chapter 13 for inspection of switches
Overhaul standard
Item Standard
Ignition CDI, battery DC digital ignition
Standard BKR6E (NGK)
Optional K6RTC
Spark Plug
Spark plug gap 0.6-0.8mm
Ignition timing
Maximum advance
angle
43°/3500r/min
Ignition coil >200V
Peak voltage
Impulse generator 4V
Special tool
Socket wrench, ignition (86511-5010)
Torque
Spark plug 18N.m(1.8kgf.m, 13 lbf.ft)
12 12