Yamaha F100DET Service Manual

ELEC
Electrical systems
– +
8-17
6D93G11
3. Measure the stator coil output peak volt-
age. Replace the stator coil if below
specification.
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.
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
Unloaded
Cranking 1,500 3,500
DC V 12.4 45.3 98.3
Stator coil resistance
(reference data):
0.24–0.36
Ω
at 20 °C (68 °F)
S6D88140
Digital circuit tester: 90890-03174
Test harness (6 pins): 90890-06848
Rectifier Regulator output peak
voltage:
Red (R) – Ground
r/min
Unloaded
1,500 3,500
DC V 13.0 13.0
S6D88150
1

Yamaha F100DET Specifications

General

Max Output	100 hp
Starting System	Electric
Lubrication System	Wet Sump
Cooling System	Water-Cooled
Full Throttle RPM Range	5000-6000 RPM
Steering	Remote
Fuel Tank Capacity	External
Cylinder Configuration	In-Line
Fuel Induction System	Electronic Fuel Injection (EFI)
Ignition System	TCI (Transistor Controlled Ignition)
Recommended Fuel	Regular unleaded gasoline (min 87 octane)
Shaft Length	L (20")
Engine Type	4-Stroke, DOHC, 16-Valve In-Line Four
Recommended Engine Oil	Yamalube 4M (10W-30 or 20W-40)