Cub Cadet Yanmar 3TNV72 - Manual (Page 274)

TROUBLESHOOTING
T
N
V IDI Service Ma
nual
13
-1
1
Troubleshooting Charts
Tr
ou
b
le Sym
p
to
m
S
tar
tin
g Pro
b
lem
In
su
ffic
ien
t
Engine Ou
tp
u
t
Poor Exha
ust
Color
High Knoc king Sou nd Du ring Co mb ustion
Abnorm al Engine Sound
Uneven Combust ion Sound
Engine Surging
Excessive Engine Vibration
Difficulty in Returning to Low Speed
Excessive Fuel Consumption
Engin
e
Oil
Excessive Blow-by Ga s
Engine Coo
lant
Air In
tak
e
Exhaust Temper atur e Rise
Cor
re
c
ti
ve Act
ion
Re
fe
re
nce Page
Engine Does Not Star t.
En
gine
Starts bu
t Sto
p
s
So
on.
Exha
ust
Color
During Work
Du ring Idlin g
Durin g Work Oper ation
Excessive O il Co nsumption
Dilution by Diesel Fuel
Oil with Water
Low Oil Pres sure
Overhe at
Low Water T empera ture
Pres sure Drop
Pressure Ris e
Exha
ust
Smoke
Ordina ry
Whit e
Black
Whit e
Black
Cause
None
Little
Much
Engine Coolan t Syst em
Excessive
Ra
diat
or
Co
olin
g
O
O
O
R
epla
c
e The
rmo
st
at
.
See “
D
isassemb
ly
o
f Eng
ine
Coola
nt
Pu
mp”
on pa
ge
8
-7
.
Ins
u
fficient Radiator
Cooling
O
OO
Re
place Th
er
most
at
o
r Che
c
k fo
r
L
oose Fa
n Belt
.
See “
D
isassemb
ly
o
f Eng
ine
Coo
lant
Pump” on
p
age
8-7
. o
r
Check and
Ad
just Coo
ling Fa
n V-
Belt
on
p
age
5
-2
7
In
su
ff
icien
t Eng
ine Coo
lant
Le
ve
l
O
OO
Che
c
k Wa
te
r L
eakag
e f
rom En
gine
Coola
n
t Syst
em.
See
“
E
ngi
ne Coola
n
t Syst
em
Che
c
k”
o
n
pa
ge
8-
7.
Cr
acked Wat
er
Ja
cket
O
O
O
R
ep
air
o
r
Repla
c
e.
See “
D
isassemb
ly
o
f Eng
ine
Coola
nt
Pu
mp”
on pa
ge
8
-7
.
Str
e
tc
hed
F
an
Belt
O
O
O
A
d
just the Belt
Tension.
See
“Check a
n
d
Adj
u
st
Cooli
ng
Fa
n V-Belt
”
o
n
pag
e
5
-1
9
.
De
fe
ctive Th
erm
o
st
at
O
O
O
O
Check or Rep
lace.
See “
D
isassemb
ly
o
f Eng
ine
Coola
nt
Pu
mp”
on pa
ge
8
-7
.
Engin e Oil System
In
co
rr
ect
En
gine
O
il
O
O
O
O
O
O
U
se
Cor
re
c
t
Engi
ne
Oil.
See “E
ngine Oil Specific
ations” on
pa
ge
4-
13
.
Engin
e
Oil Syst
em L
eakag
e
O
O
Repair.
See “Disassembly
of Oil Pump” on
pa
ge
9
-9
.
Ins
u
fficient Delivery
Capacity of
T
roc
ho
id Pum
p
O
C
he
ck an
d
Re
pa
ir
.
See “Disassembly
of Oil Pump” on
pa
ge
9
-9
.
C
log
ge
d
En
gin
e
O
il
F
ilter
O
O
Cle
an or
Re
pla
c
e
.
Se
e
“R
ep
la
ce
En
gin
e
Oil
an
d
Eng
ine Oil Filt
er
”
o
n
pag
e
5
-2
6
.
D
e
fe
ct
ive Pres
sure
Regulating Valve
O
Cle
an
, A
d
ju
st
or
Re
p
lac
e.
See “Disassembly
of Oil Pump” on
pa
ge
9
-9
.
Ins
u
fficient Engine Oil
Level
O
O
A
dd Cor
re
c
t Engin
e
Oil.
See “
A
ddin
g
Engin
e
Oil
” on
pa
ge
4-
14
.
Overfilled Engine Crankc
as
e
O
C
he
ck Eng
ine Oil
See “
C
h
e
ckin
g Eng
ine Oil
” on
pa
ge
4-
14
.
TNV_
IDI_
Serv
iceM
anua
l_(3
TNV72
for
YN
only
).bo
ok
11 ペ
ー
ジ
２０
０
７年
１
１
月２９
日 木
曜日
午後２時
５８分