Hunter 50 - Page 145

Hu
nt
e
r
50
• En
g
ines and Transmissions
11.
7
D
rop in oil pressur
e
(
en
g
ine runnin
g
at constant speed
)
Lubrication s
y
stem leakin
g
De
f
ective oil pump
Pin
c
h
ed
o
il lin
es
t
o
r
e
m
o
t
e
f
ilt
e
r
s
Repair if possible. See
y
our dealer
fo
r
se
rvi
ce
S
ee
y
our dealer
f
or servic
e
Reroute i
f
possible.
S
ee
y
our dealer
fo
r
se
rvi
ce
E
x
cessi
v
e
v
ib
r
a
t
ion
L
oose en
gi
ne mount
i
n
g
b
o
l
ts
En
g
ine not timed properl
y
or misfir-
in
g
En
g
ine-to-shaft couplin
g
s out-of-
rou
n
d
o
r
o
ff-
ce
nt
e
r
En
g
ine misali
g
ne
d
Wo
rn
s
tr
u
t
o
r tr
a
n
s
mi
ss
i
on
I
nspect an
d
t
igh
ten as requ
i
re
d
S
ee
y
our dealer for servic
e
S
ee
y
our dealer for servic
e
S
ee
y
our dealer for servic
e
Replace bearin
g
s i
f
needed.
S
ee
y
our dealer for servic
e
P
oor per
f
ormanc
e
B
oa
t
o
v
e
rl
oaded
W
e
igh
t poor
ly
di
str
ib
ute
d
Excess bil
g
e water
D
ama
g
e
d
or
i
ncorrect prope
ll
er
Fouled or dama
g
ed hull bottom
E
n
gi
ne m
i
sa
lig
ne
d
R
educe
l
oad
Di
str
ib
ute we
igh
t even
ly
.
T
r
i
mm
i
n
g
m
a
y
hel
p
Pump out water.
C
heck
f
or leaks
Inspect propeller. Replace if neces-
sary
Inspect, clean, or repair
S
ee
y
our deale
r
Low crankin
g
spee
d
Loose or dirt
y
electrical connections
L
ow
b
atter
y
c
h
ar
ge
De
f
ective batter
y
En
g
ine oil too heav
y
f
or prevailin
g
tem
p
eratures
C
h
ec
k
a
ll r
e
l
a
t
ed
e
l
ec
tri
ca
l
co
nn
ec
-
t
io
n
s
a
n
d
w
i
r
es
C
har
g
e batter
y
Replace batter
y
Drain oil and refill with correct
g
rade
viscosit
y
oil.
S
ee en
g
ine manual
f
or
c
orrect
g
rade and viscosit
y
Poo
r
acce
l
e
r
a
ti
on
Throttle not
f
ull ope
n
E
n
gi
ne over
h
eat
i
n
g
Inspect cables and linka
g
e
f
or bind-
in
g
, obstructions, and loose fasten-
ers
S
ee solutions under
“
En
g
ine
O
verheatin
g
” problem
E
xcessive
f
uel consumptio
n
Res
tri
c
ti
o
n in
a
ir
f
ilt
e
r Remove
f
ilter and clean or replac
e
Low oil pressur
e
I
n
suff
i
c
i
e
nt
o
il in
c
r
a
nk
case
Ex
cess
o
il in
c
r
a
nk
case
Diluted or improper
g
rade and vis-
c
os
i
t
y
o
il
O
il leak in pressure lin
e
C
heck and add correct
g
rade and
viscosit
y
oil. Visuall
y
check en
g
ine
fo
r l
ea
k
s
C
heck and remove required amount
o
f
o
il.
C
h
ec
k f
o
r
cause
o
f
e
x
cess
iv
e
oil
(
improper fillin
g
, bad fuel pump,
e
tc.
)
.
Chan
g
e oil and oil filter. Be sure to
u
se t
h
e correct
g
ra
d
e an
d
v
i
scos
i
t
y
o
i
l
Inspect all oil lines and ti
g
hten all
c
onnect
i
ons as necessar
y
N
o o
il
pressur
e
Defective
g
au
g
e,
g
au
g
e tube, or oil
lin
e
N
o oil in en
g
in
e
R
ep
l
ace
g
au
g
e or
g
au
g
e sen
d
er
Re
f
ill crankcase.
S
ee en
g
ine manu-
a
l
f
or proper
g
rade and viscosit
y