Yamaha F150 [270/313] Checking the ignition coils

Yamaha F150 [270/313] Checking the ignition coils
ELEC
Electrical systems
+
8-11
63P3F11
Checking the ignition spark gap
1. Remove the spark plug wire cover.
2. Disconnect the spark plug caps from the
spark plugs.
3. Connect a spark plug cap to the special
service tool.
4. 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.
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.
NOTE:
The ignition spark gap can also be checked
using the Stationary test of the Yamaha
Diagnostic System.
Checking the spark plug wires
1. Remove the spark plug wires from the
spark plugs.
2. Remove the spark plug wires from the
ignition coil.
3. Measure the spark plug wire resistance.
Replace if out of specification.
Checking the ignition coils
1. Remove the spark plug wires from the
ignition coil.
2. Disconnect the ignition coil coupler.
3. Measure the ignition coil resistance.
Replace if out of specification.
Ignition tester: 90890-06754
S63P8070
S63P8090
Spark plug wire resistance:
#1: 4.610.9 k
#2: 3.38.0 k
#3: 3.89.3 k
#4: 4.210.0 k
S60C8100
S63P8100

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