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Trac
t
or
s ,
Lawn
and
Gard
en -
110
a
nd
112
E
ngine
20'
SM
-
20
59-
(Apr-57)
Ge
ne r al
Info
r m ation - K
ohl
er 5- 7
ENGINE
ANALYSIS
P
REL
I
MIN
ARY ENGINE CHECKS
PRE
L
IMINARY
ENGINE
TEST
S
A c
omp
le
t d
ia
gn
osis
guide
of engine m aUun
c-
ti
ons
appe
ars
on
pa
ge
5-9.
Howe
ver,
the
major-
ity
of engine t
rou
bl
e r ep
ort
s
are
of a m
in
or
110
n-
hro
ni
c na tur e a
nd
ar
e
us
ua
ll
y d
ue
to
el
e
c-
tr
i
ca
l
or
fuel
s
ys
tem
d
iffic
ult
ies .
Firs
t m
ake
th
ch
ec
ks
listed
belo
w
to
isolate
th
e m ajor
ity
of
en~i
n
e
p
roblem
s.
Fig.
7-CI,,·c'jng
Spark
A
Plug
Ch
eck
sp
a
rk.
Figur
e 7.
when
e
ve
r
en
gi
n
will
no
t
st
a r
t.
If
eng
ine
w
ill
n
ot
c
ra
nk,
foll
ow
di
ag-
nos
is
pro
ce
dure
on
page
5
-9
.
R e
mov
e
igniti
on
ca
bl
e f r om
spark
p
lu
g
and
i
n-
s
ta
ll
ad
a
pt
or
or
or
dina
ry
p
ap
er
cli
p . Ho
ld
ap
-
P
I'
xim
at
ely
1/
4
inch
a
wa
y f
ro
m s pa rk
pl
u
~t
er
m
ina l whi
le
c
ran
king
t he
en
gi
ne.
If
there
is
good
s
park
between
the
adaptor
and
th
e
sp
a
rk
p
lug
terminal,
the
problem
is
in
the
fuel- a
ir
s
ys
tem.
If
gas
tank
is
full,
check
shut-
off
valv
e
on
s
ed
iment
bowl
a
nd
gas
litH,::;
to
ca
r-
bu
re
tor
to
be
certain
gas
is
getting
to
carbure
to
r.
Connec
t
high
tension
wi
r e
to
spark
plug
and
cr
ank
en
gin
e.
C
hoke
as
neces
sa
ry.
If
eng'ine
still
does
not
start,
r fer
to
" D
ia
gnosin[,;
Malfunction
s"
g'Uide
to
che
k
for
intern
al
difficulties.
If
the
r e
is
not
spark
at
the
adaptor
or
a
weak
spark,
the
trouble
is
in
the
electr
ica l
sys
t m .
If
th
e
batt
e
ry
and
spark
pl
ug
aregoodand
all
el
c-
t r i
31
connections
ar e tig
ht,
the
tr
ouble
mo
st
Hk
ely
is
in
the
brea
ke r po
ints
and
condens
e
r.
C l
ea
n
or
r e
pl
a
ce
points
and
adj
us t
ga
p.
If
br
ea
ke
r
po
i
nts
are
burned,
rep
la
ce
the
con
de
nser
al
so.
If
the
engi
ne
still
does
not
start
, or
sta
r
ts
bu
t
do
es
not
run
prop
er ly,
mak
e
th
e
compr
s
sion
te
s t
on
this
page
and
the
vacu
um
te
s t on
pag
e
5-
8.
Litho
in
U.
S.A.
Th
e fo
llo
wi
ng
p r e
lim
i
nary
eng
ine
t
es
ts a
re
r ec
ommend
ed
to
dete
ct
a
nd
isolate
possible
mal-
funct
ions bef
ore
pro
c
eedi
ng wi
th
fur
th
er
dia
g-
n
os
is
. T h
ese
t
es
ts
are
e
spec
ia
ll
y
impor
tant
wh
en
th
e
ng
in
e is bu
rn
in
g o
il,
lOS
ing
po
wer
or
run-
nin
g er r
atically
and
whe
n ca
rb
u
l'E"
tion ::
tnd
ig
n
i-
ti
on ad
ju
st
m e
nt
s do
not
cOl'
l'
e
('t
th
e co
nd
i
tion
.
COM
PRESS
IO
N T
ES
T
110
Tl'
:J.
ctors
( - 4
00
01) have engines
with
a r e
gu
l
ar
ca m s h
aft.
Tra
ctOl's (40
00
1- 1
00
,
000
)
ha ve e
ngines
wi
th
AC l (
utom
a
ti
c
Comp
res
s i
on
n el
ease
C
amsha
ft ).
Be
c
ause
c n r e
li
eves c o
m-
p r
es
-ion
press
ur
clul'ing
low
erc
r n
kin
gs
pe
cls
,
it
is
i mp
or
tant to
cra
nk
th
e en
gi
ne a t 1000
rp
m
or m
or
e to
ob
ta in an
acc
u
ra
te t
est
. A
CR
m
ec
h-
a
nism
is
di
se
n
gaged
when
ll
gine
sp
ee
d
re
aches
app
roxi
ma
tely
650
rpm.
When
th
e
e-n
gi
ne is ope
rabl
e in
th
e
tr
act
or,
ch
eck
com
pres
s ion as
follows.
Fig.
8-
Te
s
ting
E
ngine
C
om
p
r
"s
~
ion
Depress
clut
c
h-brak
e
pe
dal
and
s et pa
rk
i
ng
br
a
ke.
Be s ur e
oil
in c
rank
ca
se
is
at
prop
e r lev 1
and
ba
tt
e
ry
is
pr o
perl
y
char
?;
ed.
NOT
L
':
Be
sure
tractor
dYl:
L'
es
are
all
dis
en-
ga
e d.
Run
engi
ne
unLil
war
m ,
{h
en
stop
LJ
ze
en--
gi
n
e.
R mo
ve
spa
rk
plu
g. Al
so
r e m
ove
air
filt
er
for m
os
t a c
cur
at
e tes t.