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MASSEY.FERGUSON
GROUP
O-SECTION
V-PART
4
TECUMSEH HHIOO
&
HHI2O
EA'G''VES
HIGH
TEN'ISiON
LEAD
IGNITION
TINIT
TERMINAL
COIL
LEAD
FLYWHEEL
L/9,,
IGNITIoN
UNIT
GROMMET
RETAINING
SCREWS
Fig.
12
Turn
center shaft screw
to
bear against
crankshaft
end. Tighten center screw and flywheel should pull
loose.
A
few
drops
of
penetrating
oil
on
crankshaft
could
be
beneficial.
SOLID STATE
SYSTEM
IGNITION
SERVICE
Refer
to
Figs. 12, 13, 14 and
15.
I.
General.
The following
checks
and
explanation
are
all
that this
system
generally requires.
If
nothing
else
is
apparent,
the ignition unit
must be
replaced.
The parts of the
system
are:
A. Ignition
coil.
B.
Flywheel.
C. Ignition
unit.
D. High
tension
lead.
E.
Spark plug.
.l-87',
.2
TRIGGER
PINS
MOI.INTING
SURFACE
Fig.
14
2.
Spark
Plug Check Test ignition
by
using
a
test
plug or hold the high
tension
lead terminal
Il4"
from
the spark
plug. Crank the engine over rapidly.
If
a
good
blue
spark
jumps the gap, the ignition
system
is
func-
tional.
If
no spark is present make the following
checks:
a
through
d.
a.
Check
high tension lead for a ground out or
dis-
connect
in
the ignition
unit.
b. Check coil lead and
connection
to
ignition unit
terminal.
c.
Nr
Gap
Checks.
Adjust the
system so
that a
.006"
to .0I0"
clearance
exists
between
the
ignition unit
and
the long
trigger pin in the flyrvheel.
Fig.
13
T'O
GROUND
OHMMETER
COIL LEAD
l
Revised
3/69
Fig.
15
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