Page 1
Owner’s Manual &
Safety Instructions
23j
Model
HE35
1-7/8" SDS-Max Type Rotary Hammer
WARNING: To prevent serious injury, User must read and
understand Owner’s Manual. SAVE THIS MANUAL.
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. Reference 56845. Bit sold separately.
Page 2
IMPORTANT SAFETY INFORMATION
GENERAL POWER TOOL SAFETY WARNINGS
Personal safety
Read all safety warnings and all instructions.
Failure to follow the warnings and instructions 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.
Work area safety
1. Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
2. 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.
3. Keep children and bystanders
away while operating a power tool.
Distractions can cause you to lose control.
Electrical safety
1. Power tool plugs must match the outlet.
Never modify the plug in any way.
Do not use any adapter plugs with grounded
power tools. Unmodified plugs and matching
outlets will reduce risk of electric shock.
2. 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.
3. Do not expose power tools to rain or wet
conditions. Water entering a power tool
will increase the risk of electric shock.
4. 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.
5. 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.
6. 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.
1. 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.
2. 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.
3. 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 energising power
tools that have the switch on invites accidents.
4. 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.
5. Do not overreach. Keep proper footing and
balance at all times. This enables better control
of the power tool in unexpected situations.
6. Dress properly. Do not wear loose clothing or
jewellery. Keep your hair, clothing and gloves
away from moving parts. Loose clothes, jewellery
or long hair can be caught in moving parts.
7. 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.
8. 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.
Power tool use and care
1. 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.
2. Do not use the power tool if the Trigger
does not turn it on and off.
Any power tool that cannot be controlled with the
Trigger is dangerous and must be repaired.
Page 2 For technical questions, please call 1-888-866-5797. Item 56845
Page 3
3. Disconnect the plug from the power source
before making any adjustments, changing
accessories, or storing power tools.
Such preventive safety measures reduce the
risk of starting the power tool accidentally.
4. 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.
5. 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 damaged, have the
power tool repaired before use. Many accidents
are caused by poorly maintained power tools.
6. Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
7. 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.
Service
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.
Percussion Hammer Safety Warnings
1. Wear ear protectors. Exposure to
noise can cause hearing loss.
2. Use auxiliary handles supplied with the tool.
Loss of control can cause personal injury.
3. Hold power tools by insulated gripping surfaces,
when performing an operation where the cutting
tool 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.
4. Keep clear of moving parts.
5. Unplug before inspecting, removing or
installing bit, or performing any service.
6. Pull on bit after installation and before use;
bit may move but MUST NOT slide out.
7. Wear steel-toed boots during use.
8. Do not operate this tool if you have back, neck,
or wrist injuries, or other conditions that will
be aggravated by the severe jerking forces
that this tool exerts upon the operator.
9. Maintain labels and nameplates on
the tool. These carry important safety
information. If unreadable or missing, contact
Harbor Freight Tools for a replacement.
10. Avoid unintentional starting. Prepare to
begin work before turning on the tool.
11. 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.
12. When using a handheld power tool,
maintain a firm grip on the tool with
both hands to resist starting torque.
13. 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.
14. This product is not a toy. Keep it
out of reach of children.
15. 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.
• Properly ground power cord. Ground Fault Circuit
Interrupter (GFCI) should also be implemented
– it prevents sustained electrical shock.
16. 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.
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:
1. 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 medical or
physical symptoms related to vibration (such as
tingling, numbness, and white or blue fingers),
seek medical advice as soon as possible.
2. Do not smoke during use. Nicotine reduces
the blood supply to the hands and fingers,
increasing the risk of vibration-related injury.
3. Use tools with the lowest vibration when there
is a choice between different processes.
4. Include vibration-free periods each day of work.
5. Let the tool do the work.
6. To reduce vibration, maintain the tool as
explained in this manual. If any abnormal
vibration occurs, stop use immediately.
SAVE THESE
INSTRUCTIONS
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Page 4
GROUNDING INSTRUCTIONS
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
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 following illustration.
(See Outlets for 2-Prong Plug.)
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.
Outlets for 2-Prong Plug
TABLE A: RECOMMENDED MINIMUM WIRE
GAUGE FOR EXTENSION CORDS* (120/240 VOLT)
NAMEPLATE
AMPERES
(at full load)
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.
EXTENSION CORD
LENGTH
25´ 50´ 75´ 100´ 150´
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Page 5
Warning Symbols and Definitions
SPECIFICATIONS
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.
Symbology
Double Insulated
Electrical Rating 120VAC / 60Hz / 14A
Rotational Speed 155-320 RPM
Impact Rate 1400-2800 BPM
Shank Style SDS-Max Type
FUNCTIONS
Chuck
Ring
Front
Handle
Mode Selector
Power
Indicator
Carbon
Brush
Indicator
Power
Switch
Trigger
Speed
Knob
V
~
A
n0 xxxx/min.
Volts
Alternating Current
Amperes
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.
Page 5For technical questions, please call 1-888-866-5797.Item 56845
Page 6
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.
Tool Set Up
TO PREVENT SERIOUS INJURY FROM
ACCIDENTAL OPERATION:
Release the Trigger and unplug the tool
from its electrical outlet before adjusting
the tool or installing accessories.
Adjusting the Auxiliary Handle
The Auxiliary Handle can be placed
in a variety of positions.
To adjust the Auxiliary Handle, turn the Handle
counterclockwise to loosen the band. Slide the
Handle to the desired position then turn the
Handle clockwise to secure it in place.
Adjusting the Functions
Mode Selector
Hammer/
Drill
Chisel Adjustment
Hammer
Adjust the Mode Selector to the desired function before
using the Rotary Hammer. Rotate the Mode Selector until
it clicks in place with the desired function at the Indicator.
NOTICE: Move the Mode Selector only when the
Motor is stopped. Attempting to move the Mode
Selector while the Motor is engaged will result in
abrupt bit rotation and can cause property damage.
NOTICE: When moving the Mode Selector,
make sure it clicks into the desired position. If
not actively engaged, the Mode Selector could
slip out of position resulting in tool damage.
To Hammer/Drill: Rotate the Mode Selector to
the Hammer/Drill setting. The Rotary Hammer
will revolve and hammer when powered.
To Chisel: Rotate the Mode Selector to the Hammer
Setting. The Rotary Hammer will hammer when powered.
To Adjust Chisel Angle: Rotate the Mode Selector to the
Adjust Chisel Setting.
You can now rotate the bit to the desired angle for
chiseling. When finished adjusting the bit, rotate the
Mode Selector to the Hammer Setting to begin chiseling.
Work Piece and Work Area Set Up
1. Designate a work area that is clean and welllit. 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 work pieces 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.
5. Protect power cord from crushing, abrasion,
and scraping by broken rock or concrete.
6. Keep power cord away from moving machines.
Chisel Adjustment
Figure A
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Page 7
Masonry Drilling
Chiseling
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
2
3
Figure B
1. Clean the loading end of the bit to remove any
debris, then lubricate the bit with grease.
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.
Hammer Drill Operation
1. Adjust the Auxiliary Handle as needed.
2. Set the Function by adjusting the Mode
Selector to the desired setting.
3. Plug in the Power Cord.
4. Squeeze and hold the Trigger to
turn on the Rotary Hammer.
5. Do not apply excessive force, allow
the tool to do the work.
6. When finished, to prevent accidents, release the
Trigger and disconnect its power supply after
use. Allow the bit to cool then pull back on the
Chuck and remove the bit from the Chuck and
wipe off the bit’s shank. Clean the tool, then
store the tool indoors out of children’s reach.
Concrete Drilling Tips
1. Do not add water to the drill hole.
2. Clean the bit flutes regularly while drilling.
3. Back the bit out of the hole often during drilling,
especially when drilling deep holes.
4. Grease the bit shank and bit holder and keep
the shank end of the bit dust and debris free.
5. Use the shortest bit practical.
6. When drilling deep holes, work in stages,
use a short bit for the beginning of the
hole, then change to a longer bit.
Changing Chisel Bits
1. Check bit for dullness, cracks, or other damage.
CAUTION! Dull tipped bits can cause unnecessary
bit movement, resulting in tool wear and
possible injury. Use only sharp tipped bits.
1
2
3
Figure C
2. Clean the loading end of the bit to remove any
debris, then lubricate the bit with grease.
3. Pull back on the Chuck and insert the bit. Make
sure it slides all the way into the opening.
4. Release the Chuck.
5. Rotate the Mode Selector so the Adjust
Chisel Setting is in the ON position. Rotate
the bit to the desired angle then rotate the
Mode selector to the Hammer setting.
6. Check that the bit is secured in place. It should
not be able to be pulled out of the Chuck.
Chisel Operation
1. Adjust the Auxiliary Handle as needed.
2. Plug in the Power Cord.
3. Squeeze and hold the Trigger to
turn on the Rotary Hammer.
4. Allow the Rotary Hammer to reach full speed
before contacting the work surface.
5. When finished, to prevent accidents, release
the Trigger and disconnect its power supply
after use. Pull back on the Chuck then remove
the bit from the Chuck. Clean, then store
the tool indoors out of children’s reach.
Page 7For technical questions, please call 1-888-866-5797.Item 56845
Page 8
MAINTENANCE AND SERVICING
Procedures not specifically explained in this
manual must be performed only by a
qualified technician.
TO PREVENT SERIOUS INJURY FROM
ACCIDENTAL OPERATION:
Release the Trigger 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 hardware, misalignment
or binding of moving parts, cracked or broken
parts, damaged electrical wiring, and any other
condition that may affect its safe operation.
2. AFTER USE, wipe external surfaces
of the tool with clean cloth.
3. Lubricate the bit shank with grease
each time before installing to maintain
the life of the internal mechanism.
NOTICE: Warranty void if grease
maintenance is not followed.
4. Store in temperatures no lower than 50-60°F.
NOTE: The Demolition Hammer has airtight construction,
allowing long periods of use (approximately six
months of regular usage) before lubrication.
5. WARNING! TO PREVENT SERIOUS
INJURY: If the supply cord of this power
tool is damaged, it must be replaced only
by a qualified service technician.
Page 8 For technical questions, please call 1-888-866-5797. Item 56845
Page 9
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
switch, for example.)
Tool operates slowly. Extension cord too long or
cord diameter too small.
Performance
decreases over time.
Excessive noise
or rattling.
Overheating. 1. Forcing tool to work too fast.
1. Accessory dull or damaged.
2. Carbon brushes worn
or damaged.
Internal damage or wear. (Carbon
brushes or bearings, for example.)
2. Accessory misaligned.
3. Accessory dull or damaged.
4. Blocked motor housing vents.
5. Motor being strained by long or
small diameter extension cord.
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.
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 Instructions section on page 4.
1. Keep cutting accessories sharp. Replace as needed.
2. Have qualified technician replace brushes.
Have technician service tool.
1. Allow tool to work at its own rate.
2. Check and correct accessory alignment.
3. Keep cutting accessories sharp. Replace as needed.
4. Wear ANSI-approved safety goggles and
NIOSH-approved dust mask/respirator while
blowing dust out of motor using compressed air.
5. 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 Instructions section on page 4.
Follow all safety precautions whenever diagnosing or servicing the tool. Disconnect power
supply before service.
Page 9For technical questions, please call 1-888-866-5797.Item 56845
Page 10
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Refer to UPC 792363568456.
Page 10 For technical questions, please call 1-888-866-5797. Item 56845
Page 11
Page 11For technical questions, please call 1-888-866-5797.Item 56845
Page 12
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
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