MASSEY FERGUSON MF 14 - Page 92

MASSEY.FERGUSON
GROUP
O_SECTION
V-PART 10
FUEL SYSTEM
carburetor
body. The float setting from the
rim
of
the
carburetor
body
is .2,09".
For convenience,
place a
rt
f6ltt
twist drill across the rim, between the
center leg
and the unmachined index
pad, parallel
to
the
float axle.
3. Bend
the tab on the float hinge to
the
correct
setting.
}NLET
NEEDLE
AND
SEAT
Examine
the inlet needle
for wear
on
the four
corners
of the
body
of the needle.
(See
Fig.
4.)
If
the corners
show
signs
ofrounding, the needle
should
be replaced.
The inlet
needle seats
on a Viton rubber seat that is
pressed
into
the carburetor body.
If
it is necessary
to
remove
the inlet
seat,
put
a few drops
of
heavy
engine
oil
into
the cavity
and
position
a
compressed
air
hose
nozzle
into
the inlet fitting
on the
outside of
the
carbu-
retor.
Allow a short blast
of air to pass through the inlet
fttting
to blow
out
the
seat.
(The
seat may
also
be
pried
out by
using
a short
piece
of wire with a hook
on the
end.)
When reinstalling
the
inlet seat, insert it into the
carburetor
body cavity with
the face
of
the seat having
the
groove
inserted first.
See Fig. 6. Moisten the
car-
Flq. C
buretor
body cavity with
oil and,
using a fat faced
lxrnch,
press
the inlet seat into position.
NOTE: The
inlet needle
clip
must
be posi-
tioned as
shotpn in
Figs.
4 and
7.
Printed
in
U.S.A.
CARBURETOR BODY
The carburetor body
contains a
main
nozzle
itbe,
Fies.
7
and 9, that
presses
to
a
pre-determined
depth
INLET
NEEDLE
CLIP MUST
BE
IN
THIS POSITTON
FIg.
7
and
positions
within
the venturi of the
carburetor.
DO NOT ATTEMPT
TO
REMOVE
THE
MAIN
NOZZLE.
Any movement
of the
main
nozzle will
seriously affect
the
metering characteristics of the
carburetor
and will require
replacement
of the entire
carburetor.
It is possible
to clean
the accelerating well, surround-
ing the
main nozzle,
with
compressed air and car-
buretor
cleaning
solvents.
With
the
choke
plate
and
shaft removed,
compressed air
may be blown through
the
high
speed
air bleed.
The carburetor
body
contains two cup
plugs
(Fig.
9). The cup plug
which
is
located
near the inlet seat
cavity, seals
off the idle
air bleed.
If
this plug is re-
moved, a new plug
must be installed to assure
proper
sealing
of
the
passage
at this point.
The cup plug
that is located
in the
base of the car-
buretor,
Figs. 7,
8 and 9, seals the
idle fuel
passage.
Flg.
8
Removal of this
plug
allorvs
the metering rod to drop
out.
If
this plug
is removed,
a
new plug
must
be in-
stalled
and tightened securely.
A small
ball
plug,
Fig.
8,
is
located on the
side of
the
idle fuel passage.
Removal
of this ball
plug
provides
access to the idle
fuel cross
fuel
passage.
This is a
very
IDLE FT]EL
-R]NG
FITTING
INLET
NEEDLE
SEATS AT
THIS
rIP
POINT
IDLE
FUEL
PASSAGE
REDIJCTION
ROD
BRASS CUP