HAMMER DRILL - 1/2 INCH
VARIABLE SPEED - REVERSIBLE
45338
SEt uP AND OPERAtINg INStRuCtIONS
Distributed exclusively by Harbor Freight tools®.
3491 Mission Oaks Blvd., Camarillo, CA 93011
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE tHIS MANuAL.
Copyright© 2003 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.
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plugs with grounded power tools.
Unmodified plugs and matching out-
lets will reduce risk of electric shock.
Safety equipment such as dust mask,
non-skid safety shoes, hard hat, or
hearing protection used for appropri-
ate conditions will reduce personal
injuries.
b.Avoid body contact with grounded
surfaces such as pipes, radiators,
ranges and refrigerators. There is
an increased risk of electric shock if
your body is grounded.
c.Prevent unintentional starting.
Ensure the switch is in the off-po-
sition before connecting to power
source and/or battery pack, pick-
ing up or carrying the tool. Carry-
ing power tools with your finger on
the switch or energizing power tools
that have the switch on invites acci-
dents.
c.Do not expose power tools to rain
or wet conditions. Water entering
a power tool will increase the risk of
electric shock.
d.Do not abuse the cord. Never use
the cord for carrying, pulling or
unplugging the power tool. Keep
cord away from heat, oil, sharp
edges or moving parts. Damaged
or entangled cords increase the risk
of electric shock.
d.Remove any adjusting key or
wrench before turning the power
tool on. A wrench or a key left at-
tached to a rotating part of the power
tool may result in personal injury.
e.Do not overreach. Keep proper
footing and balance at all times.
This enables better control of the
power tool in unexpected situations.
e.When operating a power tool out-
doors, use an extension cord suit-
able for outdoor use. Use of a cord
suitable for outdoor use reduces the
risk of electric shock.
f. Dress properly. Do not wear loose
clothing or jewelry. Keep your
hair, clothing and gloves away
from moving parts. Loose clothes,
jewelry or long hair can be caught in
moving parts.
f. If operating a power tool in a damp
location is unavoidable, use a
ground Fault Circuit Interrupter
(gFCI) protected supply. Use of
a GFCI reduces the risk of electric
shock.
g.If devices are provided for the con-
nection of dust extraction and col-
lection facilities, ensure these are
connected and properly used. Use
of these devices can reduce dust-
related hazards.
3. Personal safety
a.Stay alert, watch what you are do-
ing and use common sense when
operating a power tool. Do not use
a power tool while you are tired
or under the influence of drugs,
alcohol or medication. A moment
of inattention while operating power
tools may result in serious personal
injury.
h.Only use safety equipment that
has been approved by an appropri-
ate standards agency. Unapproved
safety equipment may not provide
adequate protection. Eye protection
must be ANSI-approved and breath-
ing protection must be NIOSH-ap-
b.use personal protective equip-
ment. Always wear eye protection.
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proved for the specific hazards in the
work area.
g.use the power tool, accessories
and tool bits etc. in accordance
with these instructions, taking into
account the working conditions
and the work to be performed. Use
of the power tool for operations differ-
ent from those intended could result
in a hazardous situation.
4. Power tool use and care
a.Do not force the power tool. use
the correct power tool for your ap-
plication. The correct power tool will
do the job better and safer at the rate
for which it was designed.
5. Service
b.Do not use the power tool if the
switch does not turn it on and off.
Any power tool that cannot be con-
trolled with the switch is dangerous
and must be repaired.
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.
c.Disconnect the plug from the
power source and/or the battery
pack from the power tool before
making any adjustments, chang-
ing accessories, or storing power
tools. Such preventive safety mea-
sures reduce the risk of starting the
power tool accidentally.
Drill and Impact Drill Safety
Warnings
1. Wear ear protectors with impact
drills. Exposure to noise can cause
hearing loss.
2. use auxiliary handles supplied
with the tool. Loss of control can
cause personal injury.
d.Store idle power tools out of the
reach of children and do not allow
persons unfamiliar with the power
tool or these instructions to oper-
ate the power tool. Power tools are
dangerous in the hands of untrained
users.
3. Hold power tools by insulated grip-
ping surfaces when performing an
operation where the cutting tool
may contact hidden wiring or its
own cord. Contact with a ″live″ wire
will make exposed metal parts of the
tool ″live″ and shock the operator.
e.Maintain power tools. Check for
misalignment or binding of moving
parts, breakage of parts and any
other condition that may affect the
power tool’s operation. If dam-
aged, have the power tool repaired
before use. Many accidents are
caused by poorly maintained power
tools.
4. Maintain labels and nameplates on
the tool. These carry important safety
information. If unreadable or miss-
ing, contact Harbor Freight Tools for a
replacement.
5. Avoid unintentional starting. Prepare
to begin work before turning on the
tool.
f. Keep cutting tools sharp and
clean. Properly maintained cutting
tools with sharp cutting edges are
less likely to bind and are easier to
control.
6. Do not lay the tool down until it has
come to a complete stop. Moving
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parts can grab the surface and pull
the tool out of your control.
ies, depending on how often you do
this type of work. To reduce your
exposure to these chemicals: work in
a well ventilated area, and work with
approved safety equipment, such as
those dust masks that are specially
designed to filter out microscopic
particles. (California Health & Safety
Code § 25249.5, et seq.)
7. When using a handheld power tool,
maintain a firm grip on the tool with
both hands to resist starting torque.
8. Do not leave the tool unattended
when it is plugged into an electrical
outlet. Turn off the tool, and unplug it
from its electrical outlet before leav-
ing.
12. WARNING: Handling the cord on
this product will expose you to lead,
a chemical known to the State of
California to cause cancer, and birth
defects or other reproductive harm.
Wash hands after handling. (Califor-
nia Health & Safety Code § 25249.5,
et seq.)
9. This product is not a toy. Keep it out
of reach of children.
10. People with pacemakers should
consult their physician(s) before use.
Electromagnetic fields in close prox-
imity to heart pacemaker could cause
pacemaker interference or pacemak-
er failure. In addition, people with
pacemakers should:
13. The warnings, precautions, and in-
structions discussed in this instruction
manual cannot cover all possible con-
ditions 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.
• Avoid operating alone.
• Do not use with power switch locked
on.
• Properly maintain and inspect to
avoid electrical shock.
• Any power cord must be properly
grounded. Ground Fault Circuit Inter-
rupter (GFCI) should also be imple-
mented – it prevents sustained elec-
trical shock.
Vibration Safety
This tool vibrates during use. Re-
peated or long-term exposure to
vibration may cause temporary or
permanent physical injury, particularly
to the hands, arms and shoulders. To
reduce the risk of vibration-related
injury:
11. Some dust created by power sand-
ing, sawing, grinding, drilling, and
other construction activities, contains
chemicals known [to the State of Cali-
fornia] to cause cancer, birth defects
or other reproductive harm. Some
examples of these chemicals are:
• Lead from lead-based paints
1. Anyone using vibrating tools regu-
larly or for an extended period should
first be examined by a doctor and
then have regular medical check-
ups to ensure medical problems are
not being caused or worsened from
use. Pregnant women or people
• Crystalline silica from bricks and ce-
ment or other masonry products
• Arsenic and chromium from chemi-
cally treated lumber
Your risk from these exposures var-
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who have impaired blood circulation
to the hand, past hand injuries, ner-
vous system disorders, diabetes, or
Raynaud’s Disease should not use
this tool. If you feel any symptoms
related to vibration (such as tingling,
numbness, and white or blue fingers),
seek medical advice as soon as pos-
sible.
gROuNDINg
tO PREVENt
ELECtRIC SHOCK
AND DEAtH FROM
INCORRECt gROuNDINg
WIRE CONNECtION:
Check with a qualified
electrician if you are in doubt
as to whether the outlet is
properly grounded. Do not
modify the power cord plug
provided with the tool. Never
remove the grounding prong
from the plug. Do not use the
tool if the power cord or plug
is damaged. If damaged, have
it repaired by a service facility
before use. If the plug will not
fit the outlet, have a proper
outlet installed by a qualified
electrician.
2. Do not smoke during use. Nico-
tine reduces the blood supply to the
hands and fingers, increasing the risk
of vibration-related injury.
3. Wear suitable gloves to reduce the
vibration effects on the user.
4. Use tools with the lowest vibration
when there is a choice between dif-
ferent processes.
5. Include vibration-free periods each
day of work.
grounded tools: tools with three
Prong Plugs
6. Grip tool as lightly as possible (while
still keeping safe control of it). Let
the tool do the work.
7. To reduce vibration, maintain the tool
as explained in this manual. If any
abnormal vibration occurs, stop use
immediately.
SAVE tHESE
INStRuCtIONS.
1. Tools marked with “Grounding Re-
quired” have a three wire cord and
three prong grounding plug. The
plug must be connected to a properly
grounded outlet. If the tool should
electrically malfunction or break
down, grounding provides a low
resistance path to carry electricity
away from the user, reducing the risk
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of electric shock. (See 3-Prong Plug 2. Double insulated tools may be used
and Outlet.)
in either of the 120 volt outlets shown
in the preceding illustration. (See
Outlets for 2-Prong Plug.)
2. The grounding prong in the plug is
connected through the green wire in-
side the cord to the grounding system
in the tool. The green wire in the cord
must be the only wire connected to
the tool’s grounding system and must
never be attached to an electrically
“live” terminal. (See 3-Prong Plug
and Outlet.)
Extension Cords
1. Grounded tools require a three wire
extension cord. Double Insulated
tools can use either a two or three
wire extension cord.
2. As the distance from the supply outlet
increases, you must use a heavier
gauge extension cord. Using exten-
sion cords with inadequately sized
wire causes a serious drop in voltage,
resulting in loss of power and pos-
sible tool damage.
3. The tool must be plugged into an
appropriate outlet, properly installed
and grounded in accordance with all
codes and ordinances. The plug and
outlet should look like those in the
preceding illustration. (See 3-Prong
Plug and Outlet.)
(See table A.)
3. The smaller the gauge number of the
wire, the greater the capacity of the
cord. For example, a 14 gauge cord
can carry a higher current than a 16
gauge cord. (See table A.)
Double Insulated tools: tools
with two Prong Plugs
4. When using more than one exten-
sion cord to make up the total length,
make sure each cord contains at
least the minimum wire size required.
(See table A.)
5. If you are using one extension cord
for more than one tool, add the
nameplate amperes and use the sum
to determine the required minimum
cord size. (See table A.)
1. Tools marked “Double Insulated” do
not require grounding. They have
a special double insulation system
which satisfies OSHA requirements
and complies with the applicable
standards of Underwriters Labora-
tories, Inc., the Canadian Standard
Association, and the National Electri-
cal Code. (See Outlets for 2-Prong
Plug.)
6. If you are using an extension cord
outdoors, make sure it is marked with
the suffix “W-A” (“W” in Canada) to
indicate it is acceptable for outdoor
use.
7. Make sure the extension cord is prop-
erly wired and in good electrical con-
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dition. Always replace a damaged
extension cord or have it repaired by
a qualified electrician before using it.
8. Protect the extension cords from
sharp objects, excessive heat, and
damp or wet areas.
RECOMMENDED MINIMuM WIRE
gAugE FOR EXtENSION CORDS*
(120/240 VOLt)
EXtENSION CORD
NAMEPLAtE
LENgtH
AMPERES
(at full load)
0 – 2.0
2.1 – 3.4
18
18
18
18
18
14
12
18
18
18
16
14
12
10
18
18
16
14
12
10
-
18
16
14
12
10
-
16
14
12
12
-
3.5 – 5.0
5.1 – 7.0
7.1 – 12.0
12.1 – 16.0
16.1 – 20.0
-
-
-
* Based on limiting the line
voltage drop to five volts at
150% of the rated amperes.
tABLE A
Symbology
Double Insulated
Canadian Standards Association
Underwriters Laboratories, Inc.
Volts Alternating Current
Amperes
V~
A
No Load Revolutions per Minute
(RPM)
n xxxx/min.
0
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Assembly
SPECIFICAtIONS
Housing (29)
Auxiliary Handle (501)
Electrical Requirements 120 V~ / 60 Hz / 6.3 A
Chuck (2)
Motor No Load Speed
0-2800 RPM
Chuck Capacity
3/64 to 1/2”, plus key
chuck
Chuck Thread
1/2" - 20 UNF
Depth Gauge (502)
E194601
Wing Nut
Figure D
uNPACKINg
1. Insert the Auxiliary Handle (501) over
the Housing (29) until it rests behind
the Chuck (2). When required for
exact depth drilling, insert the Depth
Gauge (502) into the Auxiliary Handle
clamp. See Figure D.
When unpacking, make sure that the
item is intact and undamaged. If any parts
are missing or broken, please call Harbor
Freight Tools at the number shown on the
cover of this manual as soon as possible.
2. Turn the Forward Handle for left or
right-handed use, then securely tight-
en the wing nut until Auxiliary Handle
cannot move.
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.
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.
tO PREVENt
SERIOuS INjuRY
FROM ACCIDENtAL
OPERAtION:
turn the Power Switch of the
tool to its “OFF” position and
unplug the tool from its
electrical outlet before
assembling or making any
adjustments to the tool.
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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4. There must not be hazardous ob-
jects, such as utility lines or foreign
objects, nearby that will present a
hazard while working.
tool Set up
tO PREVENt
SERIOuS INjuRY
FROM ACCIDENtAL
OPERAtION:
general Operating Instructions
turn the Power Switch of the
tool to its “OFF” position and
unplug the tool from its
electrical outlet before
performing any inspection,
maintenance, or cleaning
procedures.
1. Plug the Line Cord into an electrical
outlet.
Switch On
Locking
Button
The Hammer Drill is equipped with
a keyed Chuck (2). Follow these steps to
insert a bit.
Forward/Reverse Switch
Variable Speed Knob
1. Insert the Chuck Key (3) into the
Chuck (2) and turn counterclockwise
to open the mouth of the Chuck.
Trigger Switch (24)
Figure E
2. Press the Forward/Reverse Switch to
correct position for the current job.
See Figure E.
2. Insert the hammer bit or the drill bit
(not supplied) all the way into the
Chuck.
Right position: drill or fasten (clock-
wise).
Left position: removing fasteners or
freeing bits (counterclockwise).
3. Turn the Chuck Key clockwise to
tighten the Chuck on the bit.
Work Piece and Work Area Set up
3. Adjust the Variable Speed Knob for
the desired (maximum) speed action
when the Switch is pressed.
1. Designate a work area that is clean
and well-lit. The work area must not
allow access by children or pets to
prevent injury and distraction.
4. For precision depth drilling, loosen
the Wing Nut securing the Auxiliary
Handle (501), and slide the Depth
Gauge (502) down, gauging the
depth from the bit tip. Retighten the
Wing Nut again.
2. Route the power cord along a safe
route to reach the work area without
creating a tripping hazard or exposing
the power cord to possible damage.
The power cord must reach the work
area with enough extra length to al-
low free movement while working.
5. Verify that the bit is securely locked in
the Chuck (2).
3. Secure loose work pieces using a
vise or clamps (not included) to pre-
vent movement while working.
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9. To prevent accidents, turn off the tool
and disconnect its power supply after
use. Clean, then store the tool in-
doors out of children’s reach.
Gear Setting
Control
Figure F (top view)
6. On the top of the Hammer Drill, push
the Gear Setting Control to select
plain drilling or hammer drilling.
A symbol for a drill bit indicates plain
drilling is selected. If a hammer is
shown, it is set for hammer drilling.
See Figure F.
Note: While using the Hammer Drill, al-
ways use both hands.
7. Press (and hold) the trigger Switch
(24) to turn the drill on.
This Switch varies the speed depend-
ing on how far in it is pressed.
8. Optionally, after pressing in the trig-
ger Switch, you can press the Switch
On Locking Button to keep the drill
running without keeping your finger
on the trigger Switch (24).
Use this function when drilling soft
materials only. Press the trigger
Switch again to turn it off.
CAutION! Do not drill or hammer hard,
brittle materials such as steel or
concrete with the Switch On Locking
Button pressed in (ON). If the drill
bit catches on the material, the high
torque of the drill will cause the tool
body to twist around without stopping.
This violent action could cause injury
to your hands and arms. It could also
damage the Hammer Drill.
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4. Over time, if the performance of the
tool diminishes, or it stops working
completely, it may be necessary to
replace the motor’s Carbon Brush
(21). If the Carbon Brush is only dirty,
it can be cleaned with an ink eraser
and replaced again.
MAINtENANCE AND
SERVICINg
Procedures not specifically
explained in this manual
must be performed only by a
qualified technician.
Replacing or cleaning Carbon Brush-
es must be completed by a qualified
service technician.
tO PREVENt
SERIOuS INjuRY
FROM ACCIDENtAL
OPERAtION:
5.
WARNINg! If the supply cord of
this power tool is damaged, it must
be replaced only by a qualified
service technician.
turn the Power Switch of the
tool to its “OFF” position and
unplug the tool from its
electrical outlet before
performing any inspection,
maintenance, or cleaning
procedures.
tO PREVENt SERIOuS
INjuRY FROM tOOL
FAILuRE:
Do not use damaged
equipment. If abnormal noise
or vibration occurs, have the
problem corrected before
further use.
Cleaning, Maintenance, and
Lubrication
1. BEFORE EACH uSE, inspect the
general condition of the tool. Check
for loose screws, misalignment or
binding of moving parts, cracked or
broken parts, damaged electrical wir-
ing, and any other condition that may
affect its safe operation.
2. AFtER uSE, clean external surfaces
of the tool with clean cloth.
3. Periodically blow out the motor air
vents of dust and debris using com-
pressed air.
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PARtS LISt
Part
1
Description
Screw, M6x25
Qty.
1
Part
19
Description
Change Knob
Qty.
1
2
Chuck
1
20
Brush Cap
1
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Chuck Key
Spindle
Steel Ball, 3
Circle Seal
Ball Bearing
Spring
Gear, Large
Needle Bearing, HK1207
Ratchet
Bearing Holder
Washer
Steel Ball
Ball Bearing, 62900
Armature
Stator
Ball Baring, 80018
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
21
22
23
24
25
26
27
28
29
30
31
32
33
34
501
502
Carbon Brush
Brush Holder
Inductor
2
2
2
1
6
1
2
1
1
1
1
1
1
8
1
1
Switch
Internal Wire
Condenser
Screw, ST4x14
Cord Clip
Housing, A and B
Rubber Sleeve
Cord
Name Plate
Cushion
Screw, ST4x18
Auxiliary Handle
Depth Gauge
PLEASE READ tHE FOLLOWINg CAREFuLLY
THE MANUFACTURERAND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM IN THIS MANUAL
AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR DISTRIBUTOR MAKES ANY
REPRESENTATION OR WARRANTY OFANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO
MAKEANY REPAIRS TO THE PRODUCT OR THAT HE OR SHE IS QUALIFIED TO REPLACEANY 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.
REV 04f
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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 avail-
able individually as replacement parts.
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LIMItED 90 DAY WARRANtY
Harbor Freight Tools Co. makes every effort to assure that its products meet high
quality and durability standards, and warrants to the original purchaser that this prod-
uct is free from defects in materials and workmanship for the period of 90 days from
the date of purchase. This warranty does not apply to damage due directly or indirectly,
to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities,
criminal activity, improper installation, normal wear and tear, or to lack of maintenance.
We shall in no event be liable for death, injuries to persons or property, or for incidental,
contingent, special or consequential damages arising from the use of our product. Some
states do not allow the exclusion or limitation of incidental or consequential damages, so
the above limitation of exclusion may not apply to you. THIS WARRANTY IS ExPRESS-
LY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE
WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with
transportation charges prepaid. Proof of purchase date and an explanation of the com-
plaint must accompany the merchandise. If our inspection verifies the defect, we will ei-
ther repair or replace the product at our election or we may elect to refund the purchase
price if we cannot readily and quickly provide you with a replacement. We will return re-
paired products at our expense, but if we determine there is no defect, or that the defect
resulted from causes not within the scope of our warranty, then you must bear the cost
of returning the product.
This warranty gives you specific legal rights and you may also have other rights
which vary from state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353
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