Yamaha F225A Service Manual page 351

Good operat-
ing condition?
Yes
Check the high-pressure fuel
pump relay.
Is there
continuity?
Yes
Check the fuel system using the
Yamaha Diagnostic System.
Ignition system
Check the ignition spark gap using the spark gap tester.
Out of
specification?
Yes
Replace the spark plug.
Replace the ignition coil.
69J3D11
No
Replace the pressure regulator.
No
Replace the high-pressure fuel
pump relay.
No
Check the ignition system out-
put peak voltage.
Out of
specification?
Yes
Check the ignition coils resist-
ence.
Yes
Out of
specification?
Power unit
Check the ignition
No
system using the
Yamaha Diagnostic
System.
Check the ignition
No
system using the
Yamaha Diagnostic
System.
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