Yamaha 115B, Service Manual

Page: 234 / 261

( ): Manual start
4. Disconnect the charge coil coupler.
5. Connect the digital circuit tester to the
charge coil coupler (charge coil side).
6. Measure the charge coil resistance.
Replace the stator assembly if out of
specification.
Test harness
1
: 90890-06871
ELEC
8-9 61U5H11
Electrical system
6S380145
Charge coil resistance
(reference data):
Brown (Br)
1
– Red (R)
3
428–642
Ω
at 20°C (68°F)
Blue (L)
2
– Black/red (B/R)
4
48–72
Ω
at 20°C (68°F)
Charge coil output peak voltage:
(low-speed)
Red (R) – Brown (Br)
r/min
Unloaded Loaded
Cranking 1,500 3,500
DC V
130 140
160 160
(100) (80)
Charge coil output peak voltage:
(high-speed)
Black/red (B/R) – Blue (L)
r/min
Unloaded Loaded
Cranking 1,500 3,500
DC V
45 45
160 160
(30) (30)
Thermoswitch continuity
temperature:
Pink (P) – Black (B)
e
: 84.0–90.0 °C (183–194°F)
f
: 60.0–74.0 °C (140–165°F)
S6P28750
Checking the thermoswitch
1. Place the thermoswitches in a container
of water and slowly heat the water.
2. Check the switches for continuity at the
specified temperatures. Replace the ther-
moswitches if out of specification.
a
Temperature
b
Time
c
No continuity
d
Continuity
Starting system
Checking the fuse (WH, E, ET)
1. Check the fuse (20A) for continuity.
Replace the fuse if there is no continuity.
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