9-function
metal Detector
67378
Set up anD operating inStructionS
read this material before using this product.
failure to do so can result in serious injury.
SaVe thiS manual.
©
®
Copyright 2009 by Harbor Freight Tools . All rights reserved. No portion of this manual or any artwork
contained herein may be reproduced in any shape or form without the express written consent of
Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein. Tools required for
assembly and service may not be included.
for technical questions or replacement parts, please call 1-800-444-3353.
Revised Manual 10b
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This enables better control of the
power tool in unexpected situations.
information. If unreadable or missing,
contact Harbor Freight Tools for a
replacement.
3. power tool use and care
2. Handle Tool carefully at all times.
Dropping Tool can cause damage to
circuit boards and housing, which can
cause the tool malfunction or failure.
a. Do not use the power tool if the
switch does not turn it on and
off. Any power tool that cannot
be controlled with the switch is
dangerous and must be repaired.
3. Position batteries in proper polarity
and do not install batteries of different
types, charge levels, or capacities
together.
b. remove the batteries from
the power tool before making
any adjustments, changing
accessories, or storing power
tools. Such preventive safety
measures reduce the risk of starting
the power tool accidentally.
4. Wear ANSI-approved safety goggles
and heavy-duty work gloves when
assembling and digging holes.
5. consult local regulations before
using detector, digging, or taking
any findings. Obtain property
owner’s permission before detecting
on their property.
c. Store idle power tools out of
the reach of children and do not
allow persons unfamiliar with the
power tool or these instructions
to operate the power tool. Power
tools are dangerous in the hands of
untrained users.
6. only use and store in normal
temperature environments.
d. maintain power tools. check
for misalignment or binding of
parts, breakage of parts and any
other condition that may affect
the power tool’s operation. if
damaged, have the power tool
repaired before use. Many
Extremes in temperature can shorten
effectiveness of electronic devices
and melt or damage plastic parts.
7. avoid electrical shock. Any metal
detector may discover underground
power lines, explosives or other
items which when struck could
accidents are caused by poorly
maintained power tools.
cause personal injury. Do not use
this product in areas where there
might be underground electric lines
or pipes buried at shallow depths.
Never search in military zones where
bombs or other explosives may be
buried. Avoid striking any line known
or suspected to be carrying electric
power. Do not search any pipeline,
particularly if it could contain a
4. Service
a. have your power tool serviced by
a qualified repair person using
only identical replacement parts.
This will ensure that the safety of the
power tool is maintained.
metal Detector Safety Warnings
flammable gas or liquid. In areas of
uncertain conditions, use reasonable
caution before using the Tool. If there
1. Maintain labels and nameplates on
the tool. These carry important safety
SKU 67378
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is any question about a condition
being safe of unsafe, do not operate
the Tool.
14. Warning: This product contains
or, when used, produces a chemical
known to the State of California to
cause cancer and birth defects or
other reproductive harm. (California
Health & Safety Code § 25249.5, et
seq.)
8. Keep the metal Detector away from
any lights, tVs, computers, and
moble telephones. These can all
cause electro-magnetic interference.
15. The warnings, precautions,
and instructions discussed in
this instruction manual cannot
cover all possible conditions and
situations that may occur. It must
be understood by the operator that
common sense and caution are
factors which cannot be built into this
product, but must be supplied by the
operator.
9. only the Search coil (23) and
plastic section of the lower
leg (18) are water proof. Do not
immerse the unit any further into
water beyond the plastic section of
the Lower Leg.
10. Keep the tool clean. Wipe the
housing after each use. The search
coil is washable and can be fully
submerged. Never submerge the
control housing. Protect the control
housing from rain, blowing surf and
heavy mist. Disassemble the Leg
and wipe it clean after use in sandy
areas.
SaVe theSe
inStructionS.
11. use the right tool for the job.
There are certain applications for
which this tool was designed. Do not
modify this tool and do not use this
tool for a purpose for which it was not
intended.
12. this product is not a toy. Keep it
out of reach of children.
13. people with pacemakers should
consult their physician(s) before
use. Electromagnetic fields in close
proximity to heart pacemaker could
cause pacemaker interference or
pacemaker failure. In addition,
people with pacemakers should:
• Avoid operating alone.
• Properly maintain and inspect to
avoid electrical shock.
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components & controls
SpecificationS
Earphone Jack
Electrical Input 6 AA Batteries (not included)
Earphone Jack 3.5 mm mini-jack Socket
Arm Support (13)
Battery
Cover
(26)
Sensitivity Adjuster;
Metal-Type Discriminator;
All-Metal Indicator; Tone
Functions
Adjuster; Volume Control;
Target Locator; Low Battery
Indicator; Auto Ground
Handle (8/10)
Control Box
Balance; Mode Selector
View Meter (36)
Upper Leg (15)
Cable (25)
unpacKing
When unpacking, make sure the item
is intact and undamaged. If any parts
are missing or broken, call Harbor Freight
Tools at 1-800-444-3353.
Lock Nut (20)
inStructionS for
putting into uSe
read the entire important
SafetY information
section at the beginning of this
manual including all text under
subheadings therein before set
up or use of this product.
Lower Leg (18)
Coil Pivot (21)
Knob Bolt (22)
to preVent
SeriouS injurY
from acciDental
operation:
Search Coil (23)
turn the power Switch of the
tool off and remove the
batteries before assembling
or making any adjustments to
the tool.
figure 1
note: For additional information regarding
the parts listed in the following pages,
refer to the Assembly Diagram near
the end of this manual.
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around the two Legs. Rotate the Nut
counterclockwise to lock the Legs.
operating inStructionS
read the entire important
SafetY information
section at the beginning of this
manual including all text under
subheadings therein before set
up or use of this product.
2. To adjust the length of the Legs, turn
the Lock Nut in a clockwise direction,
slide the Lower Leg to the desired
extension length and turn the Nut
counterclockwise to secure the Legs
together.
tool Set up
3. To adjust the angle of the Search
Coil, loosen the Coil Pivot (21) and
Knob Bolt (22) and tilt it. Position the
Search Coil so that it is parallel to
the ground when holding the unit by
the Handle with your arm in the Arm
Support (13).
to preVent
SeriouS injurY
from acciDental
operation:
turn the power Switch of the
tool off and remove the
batteries before adjusting tool
or installing accessories.
4. If needed, re-adjust the length of the
Metal Detector after adjusting the
position of the Search Coil.
Lock Nut (20)
Threaded Insert (24)
Upper Leg (15)
Batteries
1. Make sure the On/Off/Volume control
is set to OFF. Slide the Battery Cover
(26) off of the back of the Control
Tapered Bushing (19)
Box and insert six AA batteries (sold
separately), aligning polarities as
figure 2
note: When adjusting the length of the
Metal Detector, be careful to keep
the plastic Tapered Bushing (19) in
place with the smaller end toward the
smaller end of the Lock Nut (20).
indicated. Replace the Battery Cover.
note: Use only fresh batteries of the
required size and type. Do not mix
old and new batteries, different types
(standard, alkaline, or rechargeable),
or rechargeable batteries of different
capacities.
1. To attach the two legs, slide the
Threaded Insert (24) over the end
of the Upper Leg (15), making sure
that the tabs inside the Insert lock
into the cut-outs at the end of the
leg. Insert the tapered end of the
Tapered Bushing (19) into the Lock
Nut (20) and lightly thread the Nut
over the Insert (24). Slide the Lower
Leg (18) into the Lock Nut. To take
the slack off the cord, rotate the
Lower Leg, enabling the cord to wind
Always remove old or weak batteries.
Batteries can leak chemicals that can
destroy electric parts.
If you do not plan to use the detector
for a week or more, remove the
batteries.
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Dispose of spent batteries according
to your local, state and federal
regulations.
target Button - It is used with ALL
METAL mode to pinpoint a target
object’s location.
note: You can extend battery life by using DiSc/tone - Adjustment knob for metal
earphones, which require less power
than the built-in speaker.
identification.
View meter - Registers signal strength
note: Replace batteries when the LOW
BATT light turns on in the View Meter
(36).
when a metal is detected.
- DISC, ALL METAL, and TONE are
motion modes. You have to move the
Search Coil to find your target object.
- Target Mode is for pinpointing the
location of the item when the item is
below the surface.
headphones
1. Insert headphone (sold separately)
jack into Earphone socket.
2. To protect your hearing, set the On/
Off/Volume Control to OFF before
using the earphones, then adjust the
level to the lowest setting before you
begin listening.
LOW
BATTERY
View
Indicator
Meter
Target
Button (6)
(36)
3. Do not listen at extremely high
volume levels. Extended high volume
listening can lead to permanent
hearing loss.
On/Off/
VOLUME
DISC/TONE
(35)
(34)
4. Do not wear headphones while
operating your detector near high-
trafffic areas. Pay attention to traffic
safety.
MODE
Switch (1)
SENS
(33)
functions and indicators
on/off/Volume - Turns on power to the
unit and sets the sound level.
Earphone Socket
(11)
SenS - Sets the sensitivity level of the
unit. Zero setting is the lowest level
and 10 is the highest. For general
use, set the sensitivity to a higher
position. In a mineralized area, or
area with electrical interference, a
lower setting may be more effective.
figure 3
moDe - Sets the unit to three modes:
DISC, ALL METAL and TONE.
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Before getting Started
figure 5
Before beginning an outside search,
you must test the unit with samples of
metal. Use the following:
• an iron nail
• a five-cent coin (nickel)
• a one-cent penny (zinc coin, after
1982)
Sweep the metal samples 2 to 3
inches or more above the center of
the Search Coil. The Metal Detector
will respond to each with a “DI” tone
and the pointer on the View Meter will
swing to the right.
• a 25-cent silver quarter.
Place the Metal Detector on a
wooden or plastic table with the
Search Coil face up. Make sure the
table is away from TVs, computers,
or any device that can cause
electromagnetic interference. See
Figure 4.
note: Be sure to move the samples,
as the Detector is in motion mode.
Otherwise the Detector will not
respond.
note: Adjusting the SENS dial from
“0” to “10” will increase the Detector’s
sensitivity.
Use the DISC/TONE dial to search
for specific metals by having it not
detect (“differentiate”) other kinds of
metals.
figure 4
DiSc/tone Knob
note: Be sure to remove any
watches, rings, or other metal objects
on your fingers and hands.
Nickel
Iron
Nickel/
Gold
Zinc
Copper
Turn on the Metal Detector and
Iron
Aluminum/
set the VOLUME dial to the middle
position. Set the MODE switch to the
middle (ALL METAL). See Figure 5.
0
10 Silver
figure 6
For example, when the DISC/TONE
dial is set to “0” the Detector will
respond to ANY metal object with a
“DI” tone and the meter will swing to
the right.
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1. To adjust the settings to PREVENT
the unit from detecting iron metals,
set the VOLUME and SENS dials at
midpoint.
Sweep the nickel in front of the
Search Coil; the unit will not respond
to the nickel or to the iron nail. But it
will respond the other samples.
2. Then set MODE switch to DISC
and the DISC/TONE dial to about “9
o’clock.” See Figure 7.
5. To prevent the zinc penny from being
detected, set the DISC/TONE dial to
about “1 o’clock” See Figure 9.
figure 9
figure 7
3. As a test, sweep the iron nail sample
2 to 3 inches above the search coil.
The unit will NOT respond (the meter
pointer won’t swing and the unit is
silent.) Sweeping the other samples
should produce the “DI” tone and
make the pointer move.
By now, only the silver quarter should
be detected.
note: The discrimination position of
aluminum is similar to silver. So both
metals will be detected at the same
time. The discrimination position of
gold is similar to the nickel setting.
4. To have the unit differentiate nickel
metals, set the DISC/TONE to about
“11 o’clock.” See Figure 8.
The Metal Detector can also be
adjusted to detect all metals, yet
signal a specific metal differently from
the others.
figure 8
6. Set the MODE switch to TONE and
the VOLUME and SENS dials to their
halfway points.
7. Set the DISC/TONE dial to about “9
o’clock” (the iron setting). Sweep
the nail 2-3 inches above the Search
Coil. The unit will make a short “KO”
sound and the meter will swing to
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the right. Sweeping any of the other
samples will produce the “DI” sound.
use the TARGET button to determine
the location of the metal.
8. Rotate the DISC/TONE dial to mark
the other specific metals with the
“KO” sound.
general operating instructions
Once all the proper tests and
adjustments have been made, the
Metal Detector is ready to be used
outdoors.
To use the Metal Detector to “target’
specific metals, set the MODE switch
to ALL METAL and the VOLUME and
SENS dials to the middle.
1. When first searching, set the Mode
button to ALL METAL and SENS to
the highest level.
9. Press the red TARGET Button (6)
on the panel. Set the silver quarter
about five inches from the center of
the Search Coil. The unit will make a
continuous long tone and the meter
will swing to the right. See Figure 10.
2. Adjust the VOLUME to the desired
level.
25¢
Target
Button (6)
figure 11
3. Sweep the Search Coil (23) slowly
back and forth in an arc, keeping it
about 1/2” to 2” from the ground. See
Figure 11, above.
figure 10
4. If you hear a beeping noise or see
the needle jump to the right on the
View Meter), you have located a
metal object.
10. Keeping the coin still, release the
TARGET button. Wait two seconds,
then press down the TARGET button
again; the unit’s sensitivity will be
reduced.
5. Use the TARGET button to pin-point
the object. Then use the DISC or
TONE modes to determine what kind
of metal it is and whether you wish to
dig out the item.
11. note: Even though the coin’s
location has not changed, when the
unit’s sensitivity is reduced the Metal
Detector will stop sounding a tone.
6. To prevent accidents, turn off the tool
and remove the batteries after use.
Clean, then store the tool indoors out
of children’s reach.
12. Repeat the above operation, bringing
the coin closer to the Detector
and making it sound a tone. Once
operating an outside search, you can
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5. Move all metal digging tools when
searching.
tips for Searching in Different
environments
6. The SENS level is generally opposite
the DISC setting. The higher the
sensitivity level is, the worse the
discrimination will be. You can
lower the sensitivity to have better
discrimination.
There are many factors which
influence the sensitivity and accuracy
of detecting objects, including the
angle, depth, size and oxidation
of the target object. Various soil
or seawater conditions, and also
electromagnetic and electrical
interference surrounding the target
can also affect readings. Other metal
detectors in the area will also cause
interference, so when there is more
than one unit in use, be sure they are
at least 10 yards apart. Some ways to
help increase success are:
maintenance anD
SerVicing
Procedures not specifically
explained in this manual
must be performed only by a
qualified technician.
1. If there is interference from similar
metal detectors in your searching
area, lower the SENS setting to stop
the interference.
to preVent
SeriouS injurY
from acciDental
operation: turn the power
Switch of the tool off and
remove the batteries from the
tool before performing any
inspection, maintenance, or
cleaning procedures.
2. If there is interference from electrical
cables, TV, radio, or other electrical
devices in your searching area, lower
the SENS setting.
3. When searching in highly mineralized
areas, the unit may sound even if
there is no metal. Lower the SENS
setting, set the DISC to high and
increase the distance of the Search
Coil from the ground until the false
signal disappears. To set the DISC
setting, place a test metal object
in highly mineralized earth or wet
sand and adjust the setting before
beginning.
Do not use damaged
equipment. have the problem
corrected before further use.
cleaning and maintenance
1. Before each uSe, inspect the
general condition of the tool. Check
for loose hardware, misalignment or
binding of parts, cracked or broken
parts, damaged electrical wiring, and
any other condition that may affect its
safe operation.
4. When searching in a trash area, set
the DISC to the middle setting so that
the unit can reject most invaluable
metals such as nails, bottle caps,
cans, and small pieces of iron.
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2. Handle the Metal Detector gently and 3. after uSe, wipe external surfaces
carefully. Dropping it can damage
circuit boards and the case, and can
cause the Detector to malfunction.
of the tool with a damp clean cloth,
then dry. Do not use harsh chemicals,
cleaning solvents, or strong
detergents to clean the detector.
partS liSt
part
1
2
3
4
5
6
7
8
Description
Qty
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
part
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
Description
Qty
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
Mode Switch
Tapered Bushing
Lock Nut
Coil Pivot
Control Dials
Console Cover
Meter Cover
Adhesive Sticker
Target Button
Switch
Handle Section (Right)
Nut
Handle Section (Left)
Headphone Socket
Nut
Knob Bolt
Search Coil
Threaded Insert
Cable (not shown in diagram)
Battery Cover
9
Bolt
Bolt
Nut
Housing
Bolt
PCB
10
11
12
13
14
15
16
17
18
Arm Support
Arm Support Pad
Upper Leg
Sensitivity Potentiometer
On/Off/Volume Potentiometer
Tone Potentiometer
View Meter
Bolt
Bolt
1
1
1
1
Lower Leg
pleaSe reaD the folloWing carefullY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY
DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR
DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT
HE OR SHE IS qUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS
qUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/
OR DISTRIBUTOR ExPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD
BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE
BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE
ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER
INSTALLATION OF REPLACEMENT PARTS THERETO.
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aSSemBlY Diagram
record product’s Serial number here:
note: If product has no serial number, record month and year of purchase instead.
note: Some parts are listed and shown for illustration purposes only, and are not
available individually as replacement parts.
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