6.
MAGNETO
6-1
MAGNETO
The spark for ignition is furnished by a magneto assembly. The magneto consists of a flywheel, ignition
coil
and contact
breaker assembly (including condenser),
of
which flywheel
is
mounted on crankshaft and ignition coil contact breaker are
mounted in crankcase directly, The
EYl5B
type engine normally incorporates
a
solid state ignition system
(T.1.C)
describ-
ed in
6-5.
The
breaker points, whch are mounted in the crankcase in-
side the flywheel should be checked twice a season or when-
ever the ignition spark becomes weak.
If
there
is
an evidence
of pitting
or
pyramidding, the breaker points must be cor-
rected, and then it becomes necessary to readjust the gap to
its proper clearance.
The normal breaker point opening (point gap) is
0.35
mm
at full separation. Since the spark timing of
23"
is regulated
by the point opening,
use
a timing light to obtain an ac-
curate spark advance. (Refer to
'6
-3
TIMING
ADJUST-
MENT.")
Contact
Breaker
Fig.
46
To
adjust breaker point opening, remove starting pulley, blower housing and flywheel from the engine and proceed
as
follows: (See Fig.
46.)
1)
Remove breaker cover from contact breaker.
2)
Turn crankshaft over until breaker arm comes in contact with the
high
point of the breaker cam. (Maximum point
opening of
0.35
mm)
3)
Loosen contact support plate lock screw just enough
so
that bracket can be moved.
4)
Insert a
0.35
mm feeler gauge between the points.
CAUTION:
Adjust breaker point gap without opening
it
more than
2
mm, otherwise rated heel-pressing force may not
be
obtained due
to
the bending
of
contact
breaker arm.
5)
Apply a screw driver to adjusting tab and move the contact support plate just enough
so
that a slight drag
is
felt while
sliding the feeler gauge from between the points.
6)
Tighten lock screw and recheck breaker point gap.
7)
Pull
a strip of
8
-
10
mm wide white paper through the closed points to remove oil and dust
on
the point surfaces.
CAUTION:
When inserting
a
sheet
of
paper, never open the breaker point gap more than
2
mm.
8)
Mount flywheel, blower housing and starting pulley on engine after adjustment.
.'
'
-
37
-
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