Yamaha F100A, Service Manual

Page: 404 / 463

8-9
– +
ELEC
E
IGNITION SYSTEM
IGNITION SPARK GAP
WARNING
●
When checking the spark gap, do not
touch any of the connections of the spark
gap tester lead wires.
●
When performing the spark gap test, take
special care not to let sparks leak out of
the removed spark plug cap.
●
When performing the spark gap check,
keep flammable gas or liquids away,
since this test can produce sparks.
1. Check:
●
Ignition spark gap
Below specification
→
Continue to
check the CDI unit output.
Å
For USA and CANADA
ı
For worldwide
Spark gap:
11 mm (0.4 in)
Checking steps:
●
Remove the spark plugs from the
engine.
●
Connect the spark plug cap to the
spark gap tester.
●
Set the spark gap length on the adjust-
ing knob.
Spark gap tester:
YM-34487/90890-06754
●
Crank the engine and observe the igni-
tion system spark through the dis-
charge window.
Å
ı