Filter
Top Products
Tractors,
Lawn
a
nd
Garden
-
110
an
el
112
Engine
20
S
M-2059-
(Apr-67)
Cylind
e r
Head
and Va lv s -
Kohl
er
10-5
IN
S
PECTING
BREATHER
Fig
. IO-
Cleaning
Breather
Filter
Clean
a
ll
breather
parts
in
sol
ve
nt.
Blowout
filt
e r
contamination
with
compressed
air
or
re-
place
with
new
filtor
as
ne
cessary.
Ins pe
ct
J'eed
valve
on
breather
to
be
certain
it
covers
all
of
breather
hole
.
When
depressed
in
the
center.
the
valve
should
close
over
the
hole
with
a
snap.
Replace
valve
plate
having
weak
tens
ion
.
Be
sure
small
drain
hole
in
br
eather
pl
ate
is
not
clo
gged
.
TESTING
VALVE
SPRINGS
, • . _
',.
HI '
''.
Fig
. 12 _ V
a
lvc
SpfJ/1g
Ten
sion
Chec:k
valve
sprin
g
for
proper
pre
s
sure,
Figur
e
12.
R ef
er
to
Sp
cifications.
page
10-11,
for
fr e e
len
gt h of
the
sprin
g
and
the
pr
e
ssure
in
p
ou
llds
that
the
sprin
g
shoule!
ex
e r t
when
it
is
co
mpr
esse
d
to
a
me
as
ur
~
d
length.
INSPECTING
VALVES
Remove
carbon
from
valve
head,
fa ' 8 ,
and
stem
with
a
110wer-op
era
ted
wire
l)1"ush. B e
su
re
carbon
is
remov
(!d
and
not
merely
burnished.
Any
earbon
left
on
the
stem
will
affect
accurate
alignment
in
th
e
valve
refacer
co
llet.
Fig
.
11-
Val
ve
Spring
Squarcness
Check
valve
spring
for
squareness,
using
a
ste
el
square
and
a
surface
plate,
Figure
11.
Stand
the
spring
and
square
on
end
on
the
su
rface
plate.
Slide
the
spring
up
to
the
square.
Revolve
the
spring
slowly
and
observe
the
spa
c e
between
the
top
coil
of
SpecHications,
limits.
the
page
spring
and
10-11,
f
or
the
o
square.
See
ut-of-squ
a r e
Litho
in
U.S.A.
i 0 t·i
RG
1
~
Fig.
I3-Faulty
Vn/ves
Check
valve
faces,
heads
and
stems,
Figure
13,
for
d
efe
cts.
Also
look
for
bent
valve
sterns
and
e
xcessi
ve
corrosion
ca
using
pits
on
valve
face
or
stem.
Replace
valves
with
warped
head.
Recondition
or
re111ace
valvps
with
less
than
1/
64-in
ch
mar
g
in.
Valve
stem
ends
should
b e
g
round
square
before
checking
valve
tapp
et
clearance.