Charging Unit And Component; Checking The Lighting Coil (Stator Assembly) - Yamaha F30B 2018 Service Manual

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.
Lighting coil output peak voltage
(reference data)
Green (G)–Green (G)
r/min
Cranking
DC V 14.0
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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.
Unloaded
1500 3500
45.0 102.0
a
Charging unit and component
Test harness (3 pins) "1"
90890-06870
Test harness (3 pins) "1"
YB-06870
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.
Resistance (reference data)
0.5610–0.7590 
Green (G)–Green (G)
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a. Disconnect the lighting coil coupler "a".
b. Measure the lighting coil resistance.
G G
c. Connect the lighting coil coupler.
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5-26
a
G GG
1
G
a
G
1
G
G G