Supp
lement to
Manual 818.1 ADD
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OPERATION
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NOTE
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1.
Ad
ju
st star-pont gap
:
0.3 to
0.5
mm
2.
Check the centrfugaI
advance curve
a)
Note
the
advance
in
stages
for
steadily
increasing
engine
speeds
from
0 to 3000 rpm
und
for
steadily decrecisinq
engine speeds
from
3000
rpm
to
0.
making sure the
increase
or decrease
is continuous. These points must
full
within the shaded area
of
the curve.
b)
To
a certain
extent.
it is possible to
correct the
advance curve.
by
altering the tension
of
the
springs for
the
o
centrifugal weights
To obtain
this condition
slightly
bend
(
in ihu appropriale
dirciio,,
)
the
securing
brackets
for the
springs or replace thern.
0
0
0
0
z
c
3. Checking
the symmetry
of the
star-points
0
The angular
positioning
of
the
4- star-points must be the
same to
within l
whatever
the
speed
of the engine.
4. Checking the
vocuum
advance
curve
This
check
is
carried
out at a constant
200
rpm.
with
no centrifugal advance.
Check
the
points for the
increusing curve, then the decreasing
curve.
If
the
vacuum capsule
has a breather,
it will be necessary
to blank it off during the test.
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