Checking The Ignition Spark Gap; Checking The Ignition Coil - Yamaha F200C Service Manual

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ELEC

Checking the ignition spark gap

1. Remove the ignition coil cover and dis-
connect the spark plug caps from the
spark plugs.
2. Connect a spark plug cap to the special
service tool.
È
Dynamic spark tester: YM-34487
3. Crank the engine and observe the spark
through the discharge window of the
spark gap tester. Check the ignition sys-
tem if the spark is weak.
È
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.
8-11
Electrical systems
S69J8110
OK
S69J8150

Checking the ignition coil

1. Remove the spark plug wires from the
spark plugs.
2. Disconnect the ignition coil coupler.
3. Measure the ignition coil resistance.
Replace if out of specification.
Ignition coil resistance:
Primary coil:
Red/yellow (R/Y) –
Black/orange (B/O)
Red/yellow (R/Y) –
Black/yellow (B/Y)
Red/yellow (R/Y) –
Black/white (B/W)
1.5–1.9 Ω at 20 °C (68 °F)
Secondary coil:
Spark plug wire – Spark plug wire
19.6–35.4 kΩ at 20 °C (68 °F)
S69J8170
69J1D11