Checking The Ignition Spark Gap - Yamaha F50A Service Manual

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ELEC

Checking the ignition spark gap

1. Disconnect the spark plug caps from the
spark plugs.
2. Connect a spark plug cap to the special
service tool.
È For USA and Canada
É For worldwide
Dynamic spark tester: YM-34487
Ignition tester: 90890-06754
3. Set the spark gap length on the adjusting
knob.
8-13
Electrical systems
È For USA and Canada
É For worldwide
4. Crank the engine and observe the spark
through the discharge window of the
spark gap tester. Check the ignition coil if
out of specification.
È For USA and Canada
É For worldwide
WARNING
• Do not touch any of the connections of
the spark gap tester leads.
• Do not let sparks leak out of the
removed spark plug caps.
• Keep flammable gas or liquids away,
since this test can produce sparks.
Ignition spark gap: 9 mm (0.35 in)
62Y3A11