Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright
©
2017 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.
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1‑888‑866‑5797 as soon as possible.
Save This Manual Keep this manual for the safety warnings and precautions, assembly, operating,
inspection, maintenance and cleaning procedures. Write the product’s serial number in the back of the manual
(or month and year of purchase if product has no number). Keep this manual and
the receipt in a safe and dry place for future reference.
Owner’s Manual & Safety Instructions
Visit our website at: http://www.harborfreight.com
Email our technical support at: [email protected]
1641E-B
1-1/8" SDS VARIABLE SPEED PRO
ROTARY HAMMER KIT
64288
Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the
back of the manual (or month and year of purchase if product has no number). Keep this manual and the
receipt in a safe and dry place for future reference. 23f
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1‑888‑866‑5797 as soon as possible.
Copyright
©
2017 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.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Page 2 For technical questions, please call 1-888-866-5797. Item 64288
Table of Contents
Safety ......................................................... 2
Specifications ............................................. 7
Setup .......................................................... 7
Operation .................................................... 8
Maintenance .............................................. 10
Warranty .................................................... 12
WARNING SYMBOLS AND DEFINITIONS
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that
follow this symbol to avoid possible injury or death.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.
IMPORTANT SAFETY INFORMATION
General Power Tool Safety Warnings
Read all safety warnings, instructions, illustrations and specifications provided with this power tool.
Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
The term “power tool” in the warnings refers to your mains-operated (corded)
power tool or battery-operated (cordless) power tool.
1. Work area safety
a. Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
b. Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust. Power tools
create sparks which may ignite the dust or fumes.
c. Keep children and bystanders away
while operating a power tool. Distractions
can cause you to lose control.
2. Electrical safety
a. Power tool plugs must match the outlet.
Never modify the plug in any way. Do not use
any adapter plugs with earthed (grounded)
power tools. Unmodified plugs and matching
outlets will reduce risk of electric shock.
b. Avoid body contact with earthed or
grounded surfaces, such as pipes,
radiators, ranges and refrigerators.
There is an increased risk of electric shock
if your body is earthed or grounded.
SAFETY OPERATION MAINTENANCESETUP
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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.
e. When operating a power tool outdoors,
use an extension cord suitable for outdoor
use. Use of a cord suitable for outdoor
use reduces the risk of electric shock.
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.
3. Personal safety
a. Stay alert, watch what you are doing 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.
b. Use personal protective equipment. Always
wear eye protection. Protective equipment
such as dust mask, non-skid safety shoes, hard
hat, or hearing protection used for appropriate
conditions will reduce personal injuries.
c. Prevent unintentional starting. Ensure the
switch is in the off-position before connecting
to power source and/or battery pack, picking
up or carrying the tool. Carrying power tools
with your finger on the switch or energizing power
tools that have the switch on invites accidents.
d. Remove any adjusting key or wrench
before turning the power tool on. A wrench
or a key left attached 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.
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.
g. If devices are provided for the connection
of dust extraction and collection
facilities, ensure these are connected
and properly used. Use of dust collection
can reduce dust-related hazards.
h. Do not let familiarity gained from frequent
use of tools allow you to become
complacent and ignore tool safety
principles. A careless action can cause
severe injury within a fraction of a second.
i. Only use safety equipment that has been
approved by an appropriate standards agency.
Unapproved safety equipment may not provide
adequate protection. Eye protection must be
ANSI‑approved and breathing protection
must be NIOSH‑approved for the
specific hazards in the work area.
j. Avoid unintentional starting.
Prepare to begin work before turning on the tool.
k. Do not lay the tool down until it has come to
a complete stop. Moving parts can grab the
surface and pull the tool out of your control.
l. When using a handheld power tool,
maintain a firm grip on the tool with
both hands to resist starting torque.
m. 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 leaving.
n. This product is not a toy.
Keep it out of reach of children.
o. 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.
• Do not use with Trigger locked on.
• Properly maintain and inspect to avoid
electrical shock.
• Properly ground power cord.
Ground Fault Circuit Interrupter (GFCI)
should also be implemented – it prevents
sustained electrical shock.
p. 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.
4. Power tool use and care
a. Do not force the power tool. Use the correct
power tool for your application. The correct
power tool will do the job better and safer
at the rate for which it was designed.
b. 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.
c. Disconnect the plug from the power
source and/or remove the battery pack,
if detachable, 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.
SAFETYOPERATIONMAINTENANCE SETUP
Page 4 For technical questions, please call 1-888-866-5797. Item 64288
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 operate the power tool. Power tools are
dangerous in the hands of untrained users.
e. Maintain power tools and accessories.
Check for misalignment or binding of moving
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 accidents are
caused by poorly maintained power tools.
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.
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 different from those
intended could result in a hazardous situation.
h. Keep handles and grasping surfaces
dry, clean and free from oil and grease.
Slippery handles and grasping surfaces
do not allow for safe handling and control
of the tool in unexpected situations.
5. 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.
b. Maintain labels and nameplates on the tool.
These carry important safety information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
6. Safety instructions for all operations
a. Wear ear protectors. Exposure to
noise can cause hearing loss.
b. Use the auxiliary handle(s), if
supplied with the tool. Loss of
control can cause personal injury.
c. Hold the power tool by insulated gripping
surfaces, when performing an operation
where the cutting accessory may contact
hidden wiring or its own cord. Cutting
accessory contacting a “live” wire may make
exposed metal parts of the power tool “live”
and could give the operator an electric shock.
d. Let bit cool before touching, changing
or adjusting it. Bits heat up dramatically
while in use, and can burn you.
e. If the drill bit jams, release the
Trigger immediately; drill torque
can cause injury or break bit.
7. Safety Instructions when using long
drill bits with rotary hammers
a. Always start drilling at low speed and with
the bit tip in contact with the workpiece.
At higher speeds, the bit is likely to bend if
allowed to rotate freely without contacting
the workpiece, resulting in personal injury.
b. Apply pressure only in direct line with the
bit and do not apply excessive pressure.
Bits can bend causing breakage or loss
of control, resulting in personal injury.
8. Silicosis Safety Measures
Masonry drilling on materials such as
concrete (which contains crystalline silica)
can cause silicosis (a serious lung disease),
cancer and death. To reduce crystalline silica
exposures in the workplace and prevent
silicosis and silicosis‑related deaths:
a. Conduct air monitoring to measure
worker exposures.
b. Use containment methods to control the hazard
and protect adjacent workers from exposure.
c. Practice good personal hygiene to avoid
unnecessary exposure to silica dust.
d. Wear washable or disposable protective
clothes at the work site. Shower and change
into clean clothes before leaving the work site
to prevent contamination of cars, homes and
other work areas. Avoid skin exposure.
e. Always wear a NIOSH approved respirator and
safety goggles. Ventilate the work area properly.
f. Provide periodic medical examinations for all
workers who may be exposed to crystalline silica.
g. Post signs to warn workers about
the hazard and to inform them about
required protective equipment.
h. Provide workers with training that includes
information about health effects, work practices
and protective equipment for crystalline silica.
i. Report all cases of silicosis to State health
departments and to OSHA or the Mine
Safety and Health Administration (MSHA).
SAFETY OPERATION MAINTENANCESETUP
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9. Vibration Safety
This tool vibrates during use.
Repeated 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:
a. Anyone using vibrating tools regularly 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 who have impaired blood
circulation to the hand, past hand injuries,
nervous 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 possible.
b. Do not smoke during use. Nicotine reduces
the blood supply to the hands and fingers,
increasing the risk of vibration‑related injury.
c. Wear suitable gloves to reduce the
vibration effects on the user.
d. Use tools with the lowest vibration
when there is a choice.
e. Include vibration‑free periods each day of work.
f. Grip tool as lightly as possible (while still keeping
safe control of it). Let the tool do the work.
g. To reduce vibration, maintain the tool as
explained in this manual. If any abnormal
vibration occurs, stop use immediately.
SAVE THESE INSTRUCTIONS.
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.
Double Insulated Tools: Tools with Two Prong Plugs
Outlets for 2-Prong Plug
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
Laboratories, Inc., the Canadian Standard
Association, and the National Electrical Code.
2. Double insulated tools may be used in either of the
120 volt outlets shown in the preceding illustration.
(See Outlets for 2-Prong Plug.)
SAFETYOPERATIONMAINTENANCE SETUP
Page 6 For technical questions, please call 1-888-866-5797. Item 64288
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 extension cords with inadequately sized wire
causes a serious drop in voltage, resulting in loss of
power and possible tool damage. (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.)
4. When using more than one extension 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.)
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 properly wired
and in good electrical condition. 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.
TABLE A: RECOMMENDED MINIMUM WIRE
GAUGE FOR EXTENSION CORDS* (120/240 VOLT)
NAMEPLATE
AMPERES
(at full load)
EXTENSION CORD
LENGTH
25´ 50´ 75´ 100´ 150´
0 – 2.0 18 18 18 18 16
2.1 – 3.4 18 18 18 16 14
3.5 – 5.0 18 18 16 14 12
5.1 – 7.0 18 16 14 12 12
7.1 – 12.0 18 14 12 10 ‑
12.1 – 16.0 14 12 10 ‑ ‑
16.1 – 20.0 12 10 ‑ ‑ ‑
* Based on limiting the line voltage drop to five volts at
150% of the rated amperes.
Symbology
Double Insulated
V
Volts
~
Alternating Current
A
Amperes
n
0
xxxx/min.
No Load Revolutions per Minute (RPM)
WARNING marking concerning Risk
of Eye Injury. Wear ANSI‑approved
safety goggles with side shields.
Read the manual before
set‑up and/or use.
WARNING marking
concerning Risk of Fire.
Do not cover ventilation ducts.
Keep flammable objects away.
WARNING marking concerning
Risk of Electric Shock.
Properly connect power cord
to appropriate outlet.
WARNING marking concerning
Risk of Hearing Loss.
Wear hearing protection.
SAFETY OPERATION MAINTENANCESETUP
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Specifications
Electrical Rating 120 VAC / 60 Hz / 11 A
No Load Speed n
0
: 0‑800 / min
Impact Rate 0‑3900 BPM
Max. Accessory Diameter 1‑1/4" (32 mm)
Shank Style SDS
Note: This tool includes an internal safety clutch that helps prevent tool damage
and injury but disengaging the drill function if the bit locks in place.
Setup - Before 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
Functions
Chuck
Auxiliary
Handle
Drill Switch
Lock Knob
Grease Port
Hammer
Switch
Trigger
Speed
Control
SAFETYOPERATIONMAINTENANCE SETUP
Page 8 For technical questions, please call 1-888-866-5797. Item 64288
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:
Make sure that the Trigger is in the off-position and unplug the tool from its
electrical outlet before performing any procedure in this section.
Tool Changing
Changing Drill Bits
CAUTION! Wear heavy‑duty work gloves to
provide protection when inserting and removing
drill bits. Drill bits become very hot during use.
Do not remove drill bits until the bit has cooled.
Do not strike stuck bits with a hammer.
1. Grease the drill bit shank before installing.
2. Pull back on the Chuck and insert the drill bit.
Make sure it slides all the way into the opening.
3. Release the Chuck.
4. Check that the drill bit is secured in place.
It should not be able to be pulled out of the Chuck.
Note: When drilling a hole larger than 1‑1/4″ diameter,
use a drill bit with four cutting edges.
NOTICE: Use sharp bits. Dull, bent, or damaged
bits will cause stress on the drill and/or break.
Adjusting Auxiliary Handle
1. Turn Auxiliary Handle counterclockwise
to loosen band.
2. Slide Auxiliary Handle to desired position,
then turn clockwise to secure in place.
Band
Bracket
Auxiliary Handle
Depth Gauge Slot
Lock Knob
Adjusting Depth Gauge
Depth Gauge can be positioned on either side or
top of Rotary Hammer. Rotary Hammer body will
interfere with Depth Gauge in the bottom position.
Turn Lock Knob to open Depth Gauge
Slot and slide Depth Gauge through Depth
Gauge Slot on Auxiliary Handle.
1. Position Depth Gauge, then turn Lock Knob to
secure in place.
Note: Drilling depth is the distance from
drill bit tip Depth Gauge tip.
Drilling
Depth
Depth Gauge
Drill Bit
Adjusting Function
Adjust Drill Switch and Hammer Switch
before using Rotary Hammer.
1. Press Release Button on Drill Switch and rotate Drill
Switch until it clicks in place at one of two positions.
2. Rotate Hammer Switch until horizontal,
pointed toward right or left side of tool.
NOTICE: Move Switches only when Motor is
stopped. Attempting to move Switches with
Motor engaged will result in abrupt bit rotation
and can cause tool and property damage.
NOTICE: When adjusting Switches, confirm they
click (engage) into position. If not engaged, a Switch
could slip out of position resulting in tool damage.
SAFETY OPERATION MAINTENANCESETUP
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To Drill: Rotate Drill Switch to Drill ON setting.
Rotate Hammer Switch to Hammer OFF Setting.
Rotary Hammer will revolve when powered.
To Hammer/Drill: Rotate Drill Switch to Drill ON setting.
Rotate Hammer Switch to Hammer ON setting. Rotary
Hammer will revolve and hammer when powered.
To Chisel: Rotate Drill Switch to Drill OFF setting.
Rotate Hammer Switch to Hammer ON setting.
Rotary Hammer will hammer when powered.
Drill OffDrill Off
Drill SwitchDrill Switch
Drill OnDrill On
Release
Button
Hammer Hammer
OnOn
Hammer
Off
Hammer
Switch
Workpiece and Work Area Set Up
1. Designate a work area that is clean and well lit.
The work area must not allow access by children
or pets to prevent distraction and injury.
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 allow free movement while working.
3. Secure loose workpieces using a vise or clamps
(not included) to prevent movement while working.
4. There must not be objects, such as utility lines,
nearby that will present a hazard while working.
General Instructions for Use
WARNING! TO PREVENT SERIOUS INJURY: The tool will restart automatically if stalled.
CAUTION! TO PREVENT INJURY: Most bits are designed for use in the forward, clockwise
direction. Do not use a drill bit in the opposite direction than it is designed for.
Masonry Drilling Operation
1. Install bit, adjust Auxiliary Handle and
Depth Gauge, and set Function.
Make sure Trigger is in the off‑position, then plug in the tool.
Hold tool properly using both hands.
2. Squeeze and hold Trigger to turn on tool. Do not
apply excessive force, allow the tool to do the work.
Concrete Drilling Tips:
a. Do not add water to the drill hole.
b. Clean the bit flutes regularly while drilling.
c. Back the bit out of the hole often during drilling,
especially when drilling deep holes.
d. Grease the bit’s shank and bit holder and keep
the shank end of the bit dust and debris free.
e. Use the shortest bit practical.
f. When drilling deep holes, work in stages,
use a short bit for the beginning of the hole,
then change to a longer bit.
When finished, to prevent accidents, release Trigger and disconnect the battery.
g. Allow bit to cool, then remove from tool.
h. Wipe off the bit’s shank and store
separately from tool.
i. Clean tool, then store indoors
out of children’s reach.
j. Hammer Drill and Chisel
(Hammer) Operation
3. Install bit, adjust Auxiliary Handle and
Depth Gauge, and set Function.
a. Make sure Trigger is in the off‑position,
then plug in the tool.
b. Hold tool properly using both hands.
4. Squeeze and hold Trigger to turn on tool. Do not
apply excessive force, allow the tool to do the work.
5. Chisel (Hammer) Operation Only:
Allow Rotary Hammer to reach full speed
before contacting work surface.
6. When finished, to prevent accidents, release
Trigger and disconnect the battery.
a. Allow bit to cool, then remove from tool.
b. Wipe off the bit’s shank and store
separately from tool.
SAFETYOPERATIONMAINTENANCE SETUP
Page 10 For technical questions, please call 1-888-866-5797. Item 64288
c. Clean tool, then store indoors
out of children’s reach.
Maintenance and Servicing Instructions
Procedures not specifically explained in this manual must
be performed only by a qualified technician.
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION:
Make sure that the Trigger is in the off-position and unplug the tool from its
electrical outlet before performing any procedure in this section.
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 hardware,
• misalignment or binding of moving parts,
• damaged cord/electrical wiring,
• cracked or broken parts, and
• any other condition that may
affect its safe operation.
2. AFTER USE, wipe external surfaces
of the tool with clean cloth.
3. MONTHLY, open the Grease Port, clean out
old grease, and replace with new grease.
Grease Port Cover
NOTICE: Warranty void if grease is not
changed according to schedule.
4. WARNING! TO PREVENT SERIOUS
INJURY: If the plug or the supply cord of this
power tool is damaged, it must be replaced
only by a qualified service technician.
SAFETY OPERATION MAINTENANCESETUP
Page 11For technical questions, please call 1-888-866-5797.Item 64288
Troubleshooting
Problem Possible Causes Likely Solutions
Tool will not start. 1. Cord not connected.
2. No power at outlet.
3. Tool’s thermal reset breaker
tripped (if equipped).
4. Internal damage or wear.
(Carbon brushes or
Trigger, for example.)
1. Check that cord is plugged in.
2. Check power at outlet. If outlet is unpowered,
turn off tool and check circuit breaker.
If breaker is tripped, make sure circuit is right
capacity for tool and circuit has no other loads.
3. Turn off tool and allow to cool.
Press reset button on tool.
4. Have technician service tool.
Tool operates slowly. 1. Forcing tool to work too fast.
2. Extension cord too long or cord
diameter too small.
1. Allow tool to work at its own rate.
2. Eliminate use of extension cord. If an extension
cord is needed, use one with the proper diameter
for its length and load. See Extension Cords
in Grounding section on page 5.
Performance
decreases over time.
1. Carbon brushes worn
or damaged.
2. Bit dull or damaged.
1. Have qualified technician replace brushes.
2. Keep bits sharp. Replace as needed.
Excessive noise
or rattling.
Internal damage or wear. (Carbon
brushes or bearings, for example.)
Have technician service tool.
Overheating. 1. Forcing tool to work too fast.
2. Bit dull or damaged.
3. Blocked motor housing vents.
4. Motor being strained by long or
small diameter extension cord.
1. Allow tool to work at its own rate.
2. Keep bits sharp. Replace as needed.
3. Wear ANSI‑approved safety goggles and
NIOSH‑approved dust mask/respirator while
blowing dust out of motor using compressed air.
4. Eliminate use of extension cord. If an extension
cord is needed, use one with the proper diameter
for its length and load. See Extension Cords
in Grounding section on page 5.<DT>5
Follow all safety precautions whenever diagnosing or servicing the tool.
Disconnect power supply before service.
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Replacement parts may be available for this item.
Visit harborfreight.com/parts for a list of in stock parts. Reference UPC 193175352637.
SAFETYOPERATIONMAINTENANCE SETUP
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 product 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 EXPRESSLY 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 complaint must accompany the merchandise.
If our inspection verifies the defect, we will either 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 repaired 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.
26677 Agoura Road • Calabasas, CA 91302 • 1-888-866-5797
