Yamaha F30B 2018, Service Manual

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5-21
Engine control unit and component
c. Apply positive pressure to the oil pressure
switch “1” slowly, and then check that con-
tinuity is lost in the range of the working
pressure.
d. Disconnect the special service tool.
e. Install the oil pressure switch. See “Ex-
haust cover” (7-44).
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Checking the alert indicator (tiller han-
dle model)
1. Check:
• Alert indicator continuity
Out of specification

Replace.
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a. Remove the tiller handle cover, and then
disconnect the alert indicator couplers “a”
and “b”.
b. Connect the battery (1.5 V) to the alert in-
dicator couplers “a” and “b”. Check that the
overheat alert indicator “c” or the oil pres-
sure alert indicator “d” comes on. Replace
the alert indicator if it does not come on.
Do not apply a voltage higher than 1.7 V
when checking the LED.
c. Connect the alert indicator couplers and,
and then install the tiller handle cover.
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Vacuum/pressure pump gauge
set “2”
90890-06945
Pressure/vacuum tester “2”
YB-35956-B
Oil pressure switch
Working pressure
29.40–58.80 kPa (0.294–0.588
kgf/cm², 4.26–8.53 psi)
1
2
Lighting-up Terminal Battery
Overheat alert
indicator “c”
Yellow (Y) (+)
Pink/Black
(P/B)
(–)
Oil pressure
alert indicator
“d”
Yellow (Y) (+)
Pink/White
(P/W)
(–)
a
b
a
b
P/ W
P/ W
P/B
P/B
d
d
c
c
Y