Filter
Top Products
40
Electrical
System
Tractors,
Lawn
and
Garden
-
110
and
112
10-10
Ignition
System
SM-
2059-
(Apr-
67)
S
PARK
PLUG-Continued
Use
a
spark
plug
wrench
to
remove
plug.
Always
use
a
new
spark
plug
gasket
when
re-
placing
plu
g.
Examine
the
firing
end
of
the
spark
plug,
not-
ing
the
type
of
cleposits
and
the
degr
ee
of
elec-
trode
erosion.
Refer
to
pag-es
10-3
and
10-4
for
various
types
of
spark
plug
fouling
ane!
their
causes.
Clean
the
plug
on
a
sand
blast
clc<.lner,
fol-
lowing
manufacturers
instructions.
Do
not
pro-
long
the
use
of
the
abrasive
blast
as
it
will
erode
the
insulator
and
electrodes.
Clean
ALL
abrasive
from
plu<;>:
before
turning
into
engine.
Brush
threads
with
a
wire
brush.
Clean
the
electrode
surfaces
with
a
small
file,
Figure
18.
Dress
the
electrodes
to
obtain
flat
parallel
surfaces
on
both
the
center
and
siele
electrode.
After
cleaning,
examine
the
plug
carefully
for
cracked
or
broken
insulator,
badly
pitted
elec-
trodes,
and
other
signs
of
failure.
Replace
if
damaged.
Adjust
spark
plug
gap,
Fi~ure
30.
Torque
plug
to
recommenclec\
specifications.
BREAKER
POINTS
M
5600
Fig.
19-Burncd
Breaker
Poi"ts
Breaker
points
can
be
burned
from
exces-
sively
high
voltage,
oily
or
dirty
points,
a
faulty
condenser
or
improper
point
adjustment.
Pitted
points
and
some
transfer
of
material
between
the
points
is
considered
normal.
If
point
transfer
is
0.020
inch
or
more,
replacp
the
points.
Rough
contacts
which
are
g
reyish
in
cOlor
often
have
a
greatel'
area
of
cont
a
ct
than
new
con-
tacts,
and
will
provicle
satisfactory
s l'
l'vicf'
un-
til
most
of
the
tungsten
is
worn
of
1.
Clean
the
points
with
a
few
strokes
of
n
clean
oil
free
fine-cut
contact
(riffle)
file.
Do
not
attempt
to
remOV2
all
roug'hness
nor
dress
the
point
surfaces
smooth;
merely
remove
the
seale
or
dirt.
Never
use
emery
cloth
or
sand
papp.r
to
clean
the
points
since
abrasive
particles
will
embed
in
the
point
surface
and
cause
arcing
and
rapid
burning
of
the
po
ints.
~,
Fig
,
20-110
Tractor
Point
Replacement
When
replacing
points,
remove
screws
I I A'
I.
Be
sure
lock
washers
arc
in
place
on
110
Trac-
tor
before
reassembly.
Heplacement
points
for
112
Tractor
are
pack-
agee!
with
a
new
fiber
push
rod.
Be
sure
to
in-
stall
new
push
rod
whenever
replaCing
points.
Refer·to
Figures
28
or
29
and
adjust
breaker
point
gap.
Litho
in
U.
S.
A.