Actron Sunpro CP7673 - Ohms Calibration; Pro Tips

OHMS
CALIBRATION
OHM
nich |} ame
VOLTS #
Low | OWELL %
RPM
a
Moxey
N
You
must
zero
the
OHMS
scale
before
each
use
of
the
OHMS
function.
This
is
accomplished
in
the
following
manner:
1.
Select
the
desired
OHMS
position
(HIGH
or
LOW).
2.
Connect
the
RED
and
BLACK
test
clips
together.
3.
Turn
the
OHMS
ADJUST
knob
to
bring
the
pointer
to
zero
ohms.
The
selected
OHMS
range
is
now
ready
for
use.
if
the
meter
cannot
be
adjusted
to
zero
in
either
range
the
battery
for
that
range
must
be
replaced.
The
LOW
OHMS
scale
uses
a
1.5-volt
“C”
cell
and
the
HIGH
OHMS
scale
uses
a
9-volt
battery.
The
battery
compartment
access
cover
is
on
the
rear
of
the
unit.
PRO TIPS
1.
Burned
breaker
points
can
cause
hard
starting
and
a
rough
engine.
2.
Low
dwell
causes
poor
ignition
coil
performance.
High
dwell
causes
prema-
turely
burned
breaker
points.
3.
Excessive
distributor
mechanical
wear
causes
an
abnormal
spark
advance,
resulting
in
poor
engine
performance.
4.
High
idle
speed
causes
brake
wear,
while
low
idle
speed
causes
engine
stalling
and
roughness.
5.
Excessively
lean
or
rich
fuel
mixture
causes
a
rough
operating
engine
and
stalling
at
idle
speed.
6.
Adefective
PCV
valve
permits
crankcase
vapors
to
escape
to
the
atmos-
phere
and
increases
air
pollution.
7.
A
dirty
air
filter
causes
an
overrich
fuel
mixture
resulting
in
poor
fuel
economy
and
loss
of
power.
8.
Poor
spark
intensity
causes
misfiring
of
spark
plugs,
resulting
in
loss
of
power
and
fuel
economy.
9.
Defective
components
in
the
cranking
system
cause
slow
or
difficult
starting
of
engine,
particularly
in
extremely
cold
weather.
10.
Defective
components
in
the
charging
system
cause
premature
failure
of
the
battery
and
other
electrical
accessories.
f