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9-5
4st 25/30 2022
Check spark plugs.
Check pulsar coil resistance
and/or air gap.
Use spark tester to check
ignition sparks.
Normal?
Normal?
Normal?
Check connection of plug cap
and resistance.
Normal?
Check fuel system and
compression pressure.
Normal?
NO
NO
NO
NO
NO
YES
YES
YES
Check ignition coil resistance.
YESYES
Adjust pulser coil air gap
and/or replace pulser coil.
Clean and adjust spark
plugs, or replace.
Replace stop switch or
main switch key.
Repair or replace plug
cap.
Go to next page.
Check stop switch and main
switch key.
•
When testing, cover the electrode cap properly so as to prevent
leaks and contact with the wiring of the spark tester.
•
Keep flammable gas, fuel, and oils away, because testing
generates sparks.
Ignition System
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