Yamaha E40J - Page 189

6F65G11
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Power unit
Ignition system (continued from previous page)
Replace the CDI unit.
Check the fuel system and
compression pressure.
Check the charge coil output
peak voltage.
Yes
Yes
Check the connection
of the leads from CDI unit.
Yes
Replace the charge coil.
No
Replace the pulser coil.
No
Check the pulser coil output
peak voltage.
No
Yes
Yes
Does the out-
put peak voltage
exceed specifi-
cation values?
Does the out-
put peak voltage
exceed specifi-
cation values?
Does the out-
put peak voltage
exceed specifi-
cation values?
Check the CDI unit output
peak voltage.
Ignition system troubles are clear.
No
Does the
engine start?