Merc-O-Tronics 98 - OPERATING INSTRUCTIONS; Initial Setup and Battery Check; Test Procedure Guidelines

OPER
ATING
IN
sTR
U CTIONS
For Model
98 Beginning with Seriol
No.l5,O00
Before
any attempt
is made to
use
this instrument,
read the following
instructions. They
were
prepared
to enable those having only
a minimum
of experience
to
test app
repair
the magneto
ignition
system equally
as
,--.
well
as the
electrical
specialist. Adhere
to
the
instructions
in
sequence.
Do
not
jump
from
the first
test to
the fourth
or the
third to the fiffh,
etc.
1. Your Merc-O-Tronic
Magneto
Analyzer
is shipped
with
a dry
battery
installed in the
unit.
Remove
the
2
metal
screws at the top of
the
panel.
This
will allow the
top
to
swing back,
and
you
wiII
notice
that the
positive
(red)
battery lead is disconnected. Connect this
lead to the
positive
(+
)
post
of
thebattery.
(When
replacing
battery,
make
certain
positive
terminal
is to right side of
tester
and that
terminal nuts
are tight.)
2.
t(Zerot'
meter by turning
the
small adjustment
scre'w on
front
of
meter until
pointer
hand lines
up with
zero
on
Scal.e
No.
1, left
side.
This
is
set at
the factory,
but
should
be
rechecked.
3.
To
determine
the battery life
do
the following: Move
switch
for
volt
scale
No. 1
to
((ON"
position.
Attach
small black test lead to
negative
and
red
small
test
lead to
positive
lugs on
battery.
Then
place
selector switch on
No.
1
position.
(Red
pilot
will
be on
and
vibrator will be running). Read red figures
on top of
Scale No. 1.
Battery
should check not
less than
6.5 volts
or
proper
readings
cannot be
obtained.
(Each
division on
volt scaie
equals
0.5 volt).
For
bench
use
this
analyzet
can
be connected to an 8
volt
storage battery
power
supply.
For
8
volts tap off
4 cells from
a
12
volt
storage battery.
4. Your Merc-O-Tronic
Magneto Analyzer
is now ready for use.
The
following
batteries
can be used
in
place
of
Burgess
4F5H:
Eveready
715
Neda
903
Olin
5605
RCA
VS139
Ray-O-Vac 903
Mallory M903
To
check low
OHM
resistance
values see
page
20.
See
Page
14
for
Voltage Test Procedures.
CAUTION:
DO NOT
CONNECT
TEST LEADS TOGETHER
WHEN
SELECTOR
SWITCH
IS TURNED
TO POSITION
NO. 1
AS THIS
IS
A DIRECT
SHORT
ON
THE BATTERY.
FOR
ALL TEST
PROCEDURES
INVOLVING SELECTOR SWITCHES
1 THRU 6
-
VOLT SCALE SWITCH MUST BE IN
((OFF"
POSITION.
5.
To
check condens.er leakage
(on
Scale
No. 5)
and
condenser capacity
(on
Scale
No.
4),
plug
cord
into
115-volt 60-cycIe AC
electrical
outlet. This
is the only time
115-volt
60-cycle AC
is required.
To
read,
press
red button, the
electrical
charge
placed
in condenser
is
automatically
discharged
when
releasing red
button.
6. SPECIAL
NOTICE:
When
checking
Lauson Power Products
Coils
#30546,
30560 and
29632
or
any
coil
with
internal condenser the
5 m.m.
pot
spark wiil
appear fizzy.
DO NOT
let
this
fuzzy
spark
mislead
you.
If
spark
is steady,
coil is
good,