Filter
Top Products
Tractors,
Lawn
and
Garden
-
110
and
112
Fuel
System
30
SM-2059-(Apr-67)
Carburetor
-
112
Tract
or
10-7
CLEANING
CARBURETOR
Clean
all
parts
in a
carburetor
cleaning
sol-
vent.
CAUTION:
Never
clean holes
or
passages
wIth
small
drill
bIts
or
wIre
because a slight
enlargement
0 r
burring
0 f these holes will
change the
performance
of the
carburetor.
No
method of cleaning other than solvent should
be
used.
Place
carburetor
parts
in
a
suitable
basket
and
immerse
basket
in a
container
of
carburet-
or
cleaning
solution.
Good
carburetor
cleaning
solutions
can
be
obtained
from
most
automotive
jobbers.
Agita-
ting
the
basket
up
and
down
in
the
solution
will
speed
up
action
of
the
solvent
and
aid
in
dissolv-
in
g
deposits
in
small
drilled
passages.
Allow
parts
to
remain
in
solution
from
one
to
two
hours.
Th
en
remove
and
rinse
with
fresh
cleaning
solvent.
Dry
with
compressed
air,
making
sure
all
hol
es
are
open
and
free
of
car-
bon
and
dirt.
N
ever
use
rags
or
waste
paper
to
dry
the
parts.
Any
lint
may
plug
jets
of
channels
and
affect
operating
efficiency
of
carburetor.
CAUTION:
Never
usecompressedalrtoclean
a completely assembled
carburetor.
To
do
so
may cause the float to collapse.
INSPECTING
CARBURETOR
Inspect
tapered
end
of
float
valve
for
wear.
If
tapered
end
of
valve
appears
worn
or
dam-
aged
,
replace
float
valve
and
valve
seat
assem-
bly.
Inspect
seat
assembly
for
wear
or
other
dam-
age.
If
valve
seat
is
damaged
in
any
way,
replace
valve
seat
assembly
and
float
valve.
Valves
and
seats
are
available
only
as
match-
ed
sets
and
should
never
be
interchanged.
For
a
positive
leak
test,
immerse
the
float
in
hot
water.
Any
leak
can
be
detected
at
once
by
air
bubbles
escaping
from
the
float.
Do
not
at-
ternpt
to
repair
the
float
if
it
leaks.
Replace
it.
Check
float
shaft
and
replace
if
worn.
Inspect
tap
ered
e
nds
of
needles.
If
a
ring
has
been
cut
in
the
tapered
surface
of e
ither
needle
because
the
needle
has
been
turned
too
tightly
against
the
seat,
replace
the
ne
ed
le.
Check
condition
of
O-ring
on
high
speed
mixture
needle.
Replace
if
damaged.
The
seat
for
the
idle
mixture
needle
is
an
integral
part
of
the
carburetor
body
cast
ing.
Replace
carbu
retor
body
if
seat
is
damaged.
The
seat
for
the
high
speed
lnixture
needle
is
part
of
the
main
nozzle.
When
replacing
the
high
speed
mixtur
e
needle,
the
main
nozzle
should
also
be
replaced.
Inspe
ct
carburetor
body
casting
and
fuel
bowl
for
cracks
or
damaged
seating
surface.
Examine
threaded
holes
for
damaged
threads.
Check
throttle
and
choke
shaft
bearing
areas
in
carbu-
r e
tor
body
for
wear.
Replace
if
worn
or
damaged.
Inspect
jets
for
damaged
or
plugged
holes.
Replace
carburetor
body
if
damage
is
present.
Check
the
condition
of
all
springs.
Replace
worn
or
damaged
springs.
Check
fuel
bowl
drain
assembly.
R
eplace
in-
ternal
rubber
seat
if
fuel
bowl
has
been
leaking.
Check
fuel
pickup
passage.
It
must
be
clean
to
assure
adequate
fuel
flow
from
the
fuel
bowl
to
the
metering
systems.
Inspect
throttle
and
choke
shaft
for
excessive
wear
or
damage
in
the
bearing
area.
Litho
in
U.S.A.