Yamaha F30A 2018, Service Manual

Page: 104 / 348

5-26
Charging unit and component
Charging unit and component
Checking the lighting coil (stator as-
sembly)
1. Measure:
• Lighting coil output peak voltage
Out of specification

Measure the light-
ing coil resistance.
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a. Disconnect the lighting coil coupler “a”.
b. Connect the special service tool “1”.
c. Remove the clip from the engine shut-off
switch.
d. While cranking the engine, measure the
peak voltage.
e. Insert the clip into the engine shut-off
switch.
f. Start the engine, and then measure the
peak voltage at the specified engine
speed.
g. Measure the lighting coil output peak volt-
age between all combinations of the con-
nectors.
h. Stop the engine, and then disconnect the
special service tool.
i. Connect the lighting coil coupler.
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2. Measure:
• Lighting coil resistance
Out of specification

Replace.
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a. Disconnect the lighting coil coupler “a”.
b. Measure the lighting coil resistance.
c. Connect the lighting coil coupler.
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Lighting coil output peak voltage
(reference data)
Green (G)–Green (G)
r/min
Unloaded
Cranking 1500 3500
DC V 14.0 45.0 102.0
a
Test harness (3 pins) “1”
90890-06870
Test harness (3 pins) “1”
YB-06870
Resistance (reference data)
0.5610–0.7590

Green (G)–Green (G)
G
G
G G
GG
G 1
1
a
a
G G G