Checking The Pulser Coil; Checking The Charge Coil - Yamaha F30A Service Manual

– +
ELEC

Checking the pulser coil

1. Disconnect the pulser coil 1 coupler.
2. Connect the special service tool 2 to the
pulser coil coupler.
Test harness (2 pins) 2:
90890-06868
3. Measure the pulser coil 1 output peak
voltage. Replace if below specification.
R/W
12
B
2
NOTE:
• To prevent the engine from starting when
cranking it, be sure to disconnect all spark
plug caps.
• Do not remove the clip from the engine
shut-off switch.
• If measuring the output peak voltage under
the unloaded conditions, disconnect the
pulser coil coupler.
• When using the manual starter to crank the
engine, the voltage values may vary
depending on the speed at which the
starter handle is pulled.
8-17
Electrical system
R
W
G G/W
1
S67C8043
Pulser coil output peak voltage:
Red (R) – White (W)
Unloaded
r/min
Cranking
DC V 8.1 6.9
4. Disconnect the special service tool 2.
5. Measure the pulser coil resistance.
Replace if out of specification.
Pulser coil resistance
(reference data):
Red (R) – White (W)
300–350 Ω at 20 °C (68 °F)
6. Connect the pulser coil coupler.

Checking the charge coil

1. Measure the charge coil 1 output peak
voltage. Replace the stator assembly if
below specification.
W/G
3
G/W
1
Loaded
1,500 3,500
16.8 25.8
1
W/G
G/W
S67C8044
67C3K11