Merc-O-Tronics 98 - PRIMARY RESISTANCE TEST; Primary Resistance Test Procedure

PRIMARY
RESISTANCE
TEST
CONNECT
SMALL
RED
TEST
LEAD TO POSITIVE
PRIMARY
LEAD
ON
COIL
r"'fl7
CONNECT
SMALL
BLACK
TEST
LEAD
TO
COIL
NEGATIVE
PRIMARY
LEAD
Figure
9A
1.
Turn
selector
switch
to
position
No. 2,
Distributor
Resistance for
checking low
OHM
resistance
values.
2.
Do not
ctip test leads
together.
Turn meter adjustment
knob
for
scale
No.
2
until
meter
pointer
lines
up
on
set
position
on
right
side
of scale
No.
2.
Your
meter is now
set to
check atl low
OHM values
from
0 to 30
OHMS.
3.
Clip small red test lead
to
primary
Positive
side of
coil.
4.
Connect small black
test
lead to
primary
Negative side
of coil.
5.
ReadRed figures
on
Scale No.
2.
6.
Reading must be
between the
two
values
for
that
particular
coil
shown in
this manual
under manufacturer's
specifications.
7.
Resistance
in
OHMS can be
obtained by reading
Red
numbers
in
same scale.
8.
Readings lower
than the highest
value
shown in the
specifications,
indicate the
primary
winding is shorted.
9.
Readings higher than
the Iowest
value
under manufacturer's
specifi.
cations, indicate the
primary
winding is open.
10.
In
either
case,
the
coil
is defective
and
must
be replaced.
8A