Specifications
With the Model
EC05-2,07:2,
10,
17
and
25-2
engines, the spark
is
timed to occur
18"
-
23"
before the position reaches
TDC
on
the compression stroke.
This
spark advance of
18"
-
23"
is
controlled
by
the breaker point opening and this ad-
vance
is
obtained when the breaker point opening
is
adjusted according to the
BREAKER POINT ADJUSTMENT
to its
proper point opening. However, the advance timing
is
more accurately adjusted through the following procedures using
a
timing
light
as shown
in
Fig.
7-3-3.
NOTE:
Spark advance
of
each model
is
as
follows:
EC05, EC07-2, EC25-2
23"
EClO
:
18
EC17
.-
22"
NOTE:
Refer
to
section
"4-1
I
IGNITION.
"and
"12.
CHECKSand
CORRECTIONS."
7-3-1 ALIGNMENT MARK
for
TIMING ADJUSTMENT
(See
Fig. 7-3-1.)
For timing adjustment, the following alignment marks are provided as
shown
on
Fig.
7-3-1.
*Line mark
on
crankcase
*Line mark
on
flywheel circumference and cooling
fan
7-3-2
DEFERENCE
among
MAGNETO
for
D
TYPE,
V
TYPE
and
B
TYPE
(See
Fig. 7-3-2.)
D
type and
V
type: Clockwise
arrow
is
embossed on cooling fan.
B
type: Counter-clockwise arrow
is
embossed
on
cooling fan.
TIMING
MARKS
Fig.
7-3-
7
-
30
-
Fig.
7-3-2