13
Description Routine
Engine works unusually [High speed]
OK No or less spark
● Ignition coil not good
● Ignition coil is broken or in short
● CDI parts not good
● Spark plunger not good or polluted
● Ignition trigger not good
● Air tube jammed or damaged
Yes
● Cut Air Valve not good
● Vacuum line jammed or damaged
No
◆
Cut Air Valve OK?
Ignition time OK?
Yes
●
● CDI parts not good
● Magnetor not good
No
● Adjustment not good
● Value socket damaged
Yes No
● Oil line or oil filter jammed
● Vent hole is jammed
OK Unusual
● Not enough oil in oil tank
● minus Pressure line switch not work
Handspike gap OK?
Check oil automatic
screw function?
● Clean carburetor socket
No Yes
Carburetor socket jammed?
Reasons
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