Charging System; Checking The Lighting Coil; Checking The Rectifier Regulator - Yamaha F15B Service Manual

Charging system

Checking the lighting coil

1. Connect the digital circuit tester lead to
the lighting coil.
2. Measure the lighting coil output peak
voltage. If the measurement is below
specification, check the lead and mea-
sure the lighting coil resistance. Replace
if necessary.
G
Digital circuit tester: 90890-03174
Peak voltage adapter B:
90890-03172
Lighting coil peak voltage:
Green (G) – Green (G)
Unloaded
r/min
Cranking
DC V 14
Lighting coil resistance
(use as reference):
Green (G) – Green (G)
0.48 – 0.72 Ω at 20°C (68°F)
6D45F11
G
6D480200
1,500 3,500
30 70

Checking the rectifier regulator

1. Connect the digital circuit test leads to
the red and black or ground leads from
the rectifier regulator.
2. Measure the rectifier regulator output
peak voltage. If the measurement is
below specification, check the leads.
Replace if necessary.
R B
Digital circuit tester: 90890-03174
Peak voltage adapter B:
90890-03172
Rectifier regulator peak voltage:
Red (R) – Black (B)
Unloaded
r/min
1,500
DC V 24
Charging system
1
2
3
4
5
6D480210
6
7
3,500
8
38
9
8-12