Checking The Engine Shut-Off Switch; Starting Unit And Component; Checking The Starter Relay - Yamaha F150A Service Manual

Shift position switch continuity:
Continuity:
Switch position "a"
No continuity:
Switch position "b"
6. Install the shift position switch. See "Shift
rod and shift bracket" (9-1).
7. Connect the shift position switch coupler.

Checking the engine shut-off switch

1. Disconnect the 10-pin coupler or engine
start switch coupler.
2. Turn the engine start switch to ON, and
then check the engine shut-off switch for
continuity.
2. ON
3. START
1. OFF
1. OFF
2. ON
3. START
A. 704 remote control
B. 703 remote control
Engine shut-off switch continuity:
Clip removed:
Terminal "a"–Terminal "b"
3. Turn the engine start switch to OFF.
4. Connect the 10-pin coupler or engine
start switch coupler.
A
b
a
B
a
b

Starting unit and component

Checking the starter relay

1. Measure the input voltage between the
starter relay terminal "a" and ground.
Terminal "a"–Ground:
12 V (battery voltage)
2. Disconnect the starter relay leads, and
then remove the starter relay.
Before disconnecting the starter relay ter-
minals, make sure to disconnect the neg-
ative battery terminal.
3. Connect the positive battery lead to the
relay connector "a", and the negative bat-
tery lead to the relay lead "b", and then
check for continuity between terminals
"c" and "d". Replace the starter relay if
out of specification.
c d
Relay terminals continuity:
Battery lead connected:
Terminal "c"–Terminal "d"
5-27
Starting unit and component
a
a
Br
B
b