Checking The Rectifier Regulator - Yamaha F80B Service Manual

– +
ELEC
3. Measure the stator coil output peak volt-
age. Replace the stator coil if below
specification.
Digital circuit tester: 90890-03174
Peak voltage adapter B:
90890-03172
Test harness (6 pins): 90890-06848
Stator coil output peak voltage:
White (W) – White (W)
r/min
Cranking
DC V 12.4
Stator coil resistance
(reference data):
0.24–0.36 Ω at 20 °C (68 °F)

Checking the Rectifier Regulator

1. Disconnect the stator coil coupler.
2. Connect the test harness (6 pins)
between the Rectifier Regulator and sta-
tor coil coupler.
3. Disconnect the test harness coupler and
then measure the Rectifier Regulator
output peak voltage at the coupler 1. If
below specification, measure the stator
coil output peak voltage. Replace the
Rectifier Regulator if the output peak
voltage of the stator coil is above specifi-
cation.
8-17
Electrical systems
S6D88140
Unloaded
1,500 3,500
45.3 98.3
1
Digital circuit tester: 90890-03174
Test harness (6 pins): 90890-06848
Rectifier Regulator output peak
voltage:
Red (R) – Ground
r/min
1,500
DC V 13.0
S6D88150
Unloaded
3,500
13.0
6D93G11