SILVER µMax OPERATOR INSTRUCTION MANUAL
CONGRATULATIONS!
Your new Tesoro Silver µMAX metal detector is part of a new series of detectors designed to
provide you with many happy hours of enjoyment in the most rewarding hobby I can think of—
treasure hunting. Ahead of you lie fascinating and exciting experiences as you step into the
past—uncovering artifacts lost by past generations, or as you take pleasure in the great outdoors
with family and friends searching for precious metals. I wish we could share these experiences
with you, and all of us at Tesoro wish you the best of success.
Your Tesoro detector is capable of meeting your needs in a wide range of treasure hunting
situations. As with any other metal detector, familiarity with this instrument is probably the
limiting factor in determining how successful you can be. I recommend that you read this manual
and fully understand how to operate this detector before attempting to use it in the field. As you
become more familiar with your detector through practice, your rate of success will increase
dramatically.
The Silver µMAX is a precision electronic instrument that will last for years if properly cared
for. Treat it right and it won’t let you down.
Good Hunting! Jack Gifford
GETTING STARTED - UNPACKING THE BOX
Your Silver µMax was shipped with these parts:
1 Upper Pole Assembly
Fully assembled, including upper pole stem with handle grip, padded arm bracket and control
housing.
1 Middle Pole Assembly With Pole Lock
1 ABS Lower Pole Assembly
Fully assembled, complete with two friction washers, mounting screw, and thumb nut.
1 8" Round Concentric Searchcoil With 3’ Cable
1 9 Volt Alkaline Battery
1 Operator Instruction Manual
1 Tesoro Warranty Card
If any of these items are missing, contact the Tesoro Authorized Dealer where you purchased
your detector immediately.
Assembly of the Silver µMax is simple and requires no special tools. Just install the battery,
mount the searchcoil on the lower pole assembly, connect the pole assemblies together, wrap the
excess cable around the pole and plug the cable into the control housing. Finally, adjust the pole
length and searchcoil angle and you're ready!
INSTALLING THE BATTERY
Your Silver µMAX is equipped with an automatic battery test circuit so that you can always be
sure you are getting top performance. The battery should be checked after the detector has been
on for about 10 minutes and then periodically when used for long durations.
To install or replace the battery, first make sure the SENSITIVITY control is set to POWER
OFF—turned completely counterclockwise past the “click.” Remove the battery door from the
back of the control housing. Do this by pressing your thumb firmly on the louvered square—at
the bottom of the battery door—and sliding the battery door upward in the direction of the arrow.
Check the polarity on the battery and on the diagram inside the battery compartment. Make sure
that they match and simply drop a fresh 9 volt alkaline battery into the compartment.
Replace the battery door by sliding it into place making sure the upper mount slots are in line and
the lock tongue is snapped in place.
(Above photo depicts the Eldorado model; however, battery installation is the same for the
Silver µMax.)
ASSEMBLING YOUR DETECTOR
1. On the lower pole assembly, remove the mounting screw and thumb nut from the black
nylon pole tip.
2. Insert the pole tip between the mounting ears of the searchcoil and align the holes of the
pole tip and washers with those of the mounting ears.
Note: The pole tip should fit very snugly into the mounting ears.
3. Insert the mounting screw through the holes in the mounting ears and pole tip—entering
from the side opposite the cable connection.
4. Install the thumb nut on the mounting screw and tighten by hand.
Note: Do not overtighten the thumb nut. It should be snug but not too difficult to
loosen up.
5. On the middle pole assembly, depress the two spring buttons and slide the middle pole
assembly into the upper pole assembly until the spring buttons click into the holes, thus
locking the two assemblies into place. Tighten the pole lock to secure the two assemblies
together.
6. Slide lower pole into middle pole until spring buttons click into the first set of adjustment
holes. Turn pole lock to tighten, thus locking the assembly into place.
7. Wrap the cable around the pole leaving enough slack near the searchcoil to permit
searchcoil adjustment. Note: Do not allow the cable to flop loosely over the searchcoil.
Since the detector is sensitive enough to “see” the tiny wires in the cable, a floppy cable
can cause false signals as the searchcoil senses the moving wires.
8. Plug the male cable end into the female connector on the control housing and tighten the
cable thumb nut. You are finished!
Note: You will want to adjust the pole length and the searchcoil angle to your
preference.
(Above photos are shown using the Eldorado model; however, assembly procedures are
the same for the Silver µMax.)
ADJUSTING THE P OLE & SEARCHCOIL
The pole length should be adjusted so that the detector does not
become uncomfortable or tiring after long periods of use. The
detector grip should rest in your hand with your arm relaxed, your
elbow straight but not locked, and with the pole extending out in front
of you at the approximate angle shown in the photo.
You should be able to swing the detector back and forth in front of
you—using relaxed shoulder movement—while keeping the
searchcoil as close to the ground as possible. This swinging
movement is often called a “sweep.”
The searchcoil should not touch the ground during your sweep. The
pole length should be adjusted to allow this without having to lift the
detector with your elbow or shoulder. The searchcoil should rest
about one inch above the ground while you are standing erect. The
angle of the searchcoil should allow the bottom to be parallel to the
ground.
The pole length is adjusted by depressing the spring buttons and extending or shortening the pole
until the spring buttons click into the set of holes that give you the most comfortable pole length.
To adjust the searchcoil angle, simply loosen the searchcoil thumb nut slightly and move the
searchcoil into the desired position. Tighten the searchcoil thumb nut by hand so that the
searchcoil will hold in place.
QUICKSTART
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