Yamaha F30A, Service Manual

Page: 252 / 285

ELEC
Electrical system
– +
8-15
67C3K11
Checking the starter relay (E and W
model)
1. Disconnect the starter relay 1 coupler.
2. Connect the special service tool 2 to the
starter relay coupler (wiring harness
end).
3. Set the shift lever or remote control lever
to the N position.
4. Turn the engine start switch to “START,”
and then measure the input voltage at
the starter relay coupler (wiring harness
end). Check the engine start switch, neu-
tral switch (in the tiller handle or remote
control box), wiring harness, and ground
lead if below specification.
5. Disconnect the special service tool 2
and battery cables, and then remove the
starter relay.
6. Connect the digital circuit tester leads to
the starter relay terminals.
7. Connect the brown (Br) lead of the
starter relay to the positive battery termi-
nal and connect the black (B) lead to the
negative battery terminal. Check for con-
tinuity between the starter relay termi-
nals. Replace if there is no continuity.
8. Disconnect the brown (Br) or black (B)
lead of the starter relay from a battery
terminal. Check that there is no continuity
between the starter relay terminals.
Replace if there is continuity.
9. Install the starter relay, and then connect
the battery cables, starter relay coupler,
and starter relay leads.
Ignition and ignition control
system
Checking the ignition spark
1. Disconnect the spark plug caps from the
spark plugs.
NOTE:
To prevent the engine from starting when
cranking it, be sure to disconnect all spark
plug caps.
2. Connect the spark plug cap to the special
service tool.
Test harness (2 pins) 2 :
90890-06867
Starter relay input voltage (reference
data):
Brown (Br) – Black (B)
12 V (battery voltage)
S67C8037
Br
B
Br
B
G/W G
1
2
Ignition tester: 90890-06754
S67C8038
Br
Br
B
B