Yamaha F150B, Service Manual

Page: 116 / 458

4-11
TRBL
SHTG
Troubleshooting
T
roub
leshooting the po
wer unit
(tr
oub
le code not detected)
T
roub
lesho
o
ting whe
n
a trou
b
le
cod
e
is
n
o
t
a
v
aila
b
le
con
s
ists of the
f
o
llo
w
ing 4 items
.
Symptom 1: Spe
c
ifi
c
troub
le cond
iti
ons
.
Symptom 2: T
roub
le
condi
ti
ons of
an
a
rea or indi
vidua
l par
t.
C
a
u
s
e
1
: Th
e co
nt
en
t co
nsi
d
e
red
as th
e tro
u
b
le
f
a
cto
rs of
symp
tom 2
.
C
a
u
s
e
2
: Th
e co
nt
en
t co
nsi
d
e
red
as th
e tro
u
b
le
causes of
ca
use 1 (descr
ib
ed if
n
e
cessar
y
).
— : Not app
licab
le
Symptom
1: Engine d
o
es not c
ra
n
k.
Sym
p
to
m
2
C
au
se
1
C
a
u
s
e
2
C
he
c
k
in
g
ste
p
Ref
e
r to
pa
ge
Sta
rte
r mo
to
r do
es
n
o
t
o
per
at
e
Bl
o
w
n f
u
s
e
—
Chec
k t
he f
u
se
.
5
-2
A-7
St
ar
te
r re
la
y
m
a
lf
unct
ion
—
C
hec
k t
he sta
rte
r re
la
y.
5
-3
8
En
gin
e
st
ar
t s
wit
ch malf
un
ct
ion
—
Chec
k t
he en
gin
e
st
ar
t s
wit
ch
.
5
-3
9
Ne
ut
ra
l s
w
it
ch ma
lfu
n
ctio
n
—
Chec
k t
he ne
ut
ra
l s
witch (
rem
ot
e cont
ro
l).
5
-3
9
Sh
or
t,
op
en
, or
loose con
nect
ion
in
st
ar
te
r
m
o
to
r circ
uit
—
Chec
k t
he sta
rte
r re
la
y inpu
t v
o
lt
a
g
e
.
5
-3
8
A-7
Chec
k the wir
ing
har
n
ess
contin
uity
.
A
-7
St
ar
te
r
mot
o
r
malf
un
ct
ion
—
Disa
s
se
mb
le
and
ch
ec
k t
h
e
st
ar
te
r m
o
to
r.
5
-4
3
Sta
rte
r mo
to
r op
er
a
te
s
,
b
u
t t
he en
gin
e
doe
s no
t
cr
ank
S
tar
ter motor malfunc
tion
Clutch assemb
ly malfunc
-
tion
Dis
as
semb
le
and chec
k the star
ter motor
.
5-43
M
agn
et
s
wit
ch
m
a
lf
un
ct
ion
St
uc
k pist
on
—
Dis
as
sem
b
le
a
n
d
che
c
k th
e po
wer
u
n
it
.
7-
36
7-
45
P
iston loc
k
due to w
a
ter or oil in
the comb
us-
ti
on
c
h
a
m
be
r
Sa
lt b
u
ild
up o
n
th
e dr
iv
e sha
ft
and
b
u
sh
ing
—
Disa
s
se
mb
le and
ch
ec
k
th
e
u
p
p
e
r
case
.
9
-1
6