MASSEY FERGUSON MF 14 - Ignition System

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Fig. 16
-
Fuel Pump
-
ldenlilication
of Parts
Fig. 17
-
lgnilion
Timing Using
A
Gontinuity
Light
1.
Screw
5. Spring
2.
Pump
Cover 6,
Valve Relainer
3.
Gasket
7.
Screw
4.
Valve
8. Oiaphragm
9.
Spring
10.
Gasket
11. Pump Body
IGNITION SYSTEM
When
checking the
ignition system,
start
with
the components
that
require most frequent
servicing.
Hard starting,
low
power
and erratic
operation are
often
caused
by faulty
ignition.
Spark
plug,
ignition coil,
points
and condenser
must be in
good
condition and
the spark must
occur at the
proper
time
to maintain
good
per-
formance. A simple test will
help
determine
if
the ignition is
at fault.
QUICK
IGNITION
CHECK
Remove high
tension
wire from
spark
plug.
Turn engine in
direction
of rotation
while
holding
wire approximately
1/8" away from
cylinder
block. lf
a sharp, snappy
spark
jumps
this dis-
tance,
you
may assume
the
ignition system
is
functioning satisfactorily. Try a
new spark
plug.
lf spark
does not
occur,
check the
ignition com-
ponents
and wiring.
BREAKER
POINTS
AND
CONDENSER
Point
condition and adjustment of
gap
will
affect
engine operation.
lf the
points
are
burned
or
badly
oxidized,
little
or no
current will flow
through the ignition system.
Breaker
point gap
will also
affect ignition timing.
To install
points proceed
as follows:
1. Be
sure
push
rod
is in
place
and
secure
points
in
place
with
retaining
screws.
Replace
condenser
when
points
are
replaced.
2.
Connect
wire
to
points
and
rotate
fly-
wheel
until
points
fully
open.
3.
Adjust point
gap
to
.020".
4.
Attach
continuity
test light
to
breaker
point
wire
and
to
ground
as shown
in Fig.
17.
5. Rotate
engine slowly
in
direction
of ro-
tation
until
light
just
goes
out. At
this
point,
S
mark on
flywheel
should
align with
mark
on
bearing
plate.
lf
the
marks
do
not
align
readjust
points.
Point
gap
will
vary
from
.019"-.022".
IGNITION
COIL
The ignition
coil
requires
very litile
servicing
except being
kept clean
and
all terminals
tight.
The
coil
must
be hooked
up
properly.
The
negative
(-)
coil
terminal
must
be connected
to
the breaker
points.
IGNITION
TIMING
The
engine has
a hole
in
the
flywheel hous-
ing
so
that the
timing
marks can
be
observed.
Two timing
marks
are stamped
on the
flywheel
-
the
f mark indicates
T.D.C.
and the
S
mark
indicates
the spark
point
which
is 20.
B.T.D.C.
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