Hercules HC61PB Assembly instructions
Battery and Charger Sold Separately
Model
HC61PB
Cordless 4-1/2" /5" Paddle Switch Brushless Angle Grinder
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 58260.
Owner’s Manual &
Safety Instructions
22a
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SAFETY OPERATION MAINTENANCESETUP
IMPORTANT SAFETY INFORMATION
General Power Tool Safety Warnings
Read all safety warnings and 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.
your
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
Do not expose power tools to rain or wet
conditions.
the risk of electric shock.
Personal Safety
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
2. Use safety equipment. Always wear eye
protection.
dust mask, non-skid safety shoes, hard hat,
3. Prevent unintentional starting. Ensure
the switch/trigger is in the off-position
before connecting to power source and/
or battery pack, picking up or carrying the
tool.
have the switch on invites accidents.
4. Remove any adjusting key or wrench
before turning the power tool on.
5. Do not overreach. Keep proper footing and
balance at all times. This enables better control
6. Dress properly. Do not wear loose clothing or
jewelry. Keep your hair, clothing and gloves
away from moving parts. Loose clothes, jewelry
7. If devices are provided for the connection of
dust extraction and collection facilities, ensure
these are connected and properly used. Use of
these devices 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.
safer at the rate for which it was designed.
2. Do not use the power tool if the switch/trigger
does not turn it on and off.
3. Disconnect the battery pack from the
power tool before making any adjustments,
changing accessories, or storing power
tools.
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
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SAFETYOPERATIONMAINTENANCE SETUP
6. Keep cutting tools sharp and clean.
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
intended could result in a hazardous situation.
Battery tool use and care
1. Recharge only with the charger specified by
the manufacturer. A charger that is suitable
2. Use power tools only with specifically
designated battery packs. Use of any other
3. When battery pack is not in use, keep it away
from other metal objects, like paper clips,
coins, keys, nails, screws or other small metal
objects, that can make a connection from
one terminal to another. Shorting the battery
terminals together may cause burns or a fire.
4. Under abusive conditions, liquid may be
ejected from the battery; avoid contact.
If contact accidentally occurs, flush with water.
If liquid contacts eyes, additionally seek
medical help. Liquid ejected from the
battery may cause irritation or burns.
Service
Have your power tool serviced by a qualified repair
person using only identical replacement parts.
This will ensure that the safety of the
Safety Warnings Common
for Grinding, Sanding, or
Abrasive Cutting-off Operations
1. This power tool is intended to function as
a grinder, sander, or cut-off tool. 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.
2. Operations such as wire brushing or
polishing are not recommended to be
performed with this power tool. Operations
for which the power tool was not designed may
create a hazard and cause personal injury.
3. Do not use accessories which are not
specifically designed and recommended
by the tool manufacturer. Just because the
4. The rated speed of the accessory must be at
least equal to the maximum speed marked on
the power tool. Accessories running faster than
5. The outside diameter and the thickness of your
accessory must be within the capacity rating
of your power tool. Incorrectly sized accessories
cannot be adequately guarded or controlled.
6. The arbor size of wheels, flanges, backing
pads or any other accessory must properly
fit the spindle of the power tool. Accessories
with arbor holes that do not match the mounting
7. Do not use a damaged accessory.
Before each use inspect the accessory such
as abrasive wheels for chips and cracks,
backing pad for cracks, tear or excess
wear. If power tool or accessory is dropped,
inspect for damage or install an undamaged
accessory. After inspecting and installing an
accessory, position yourself and bystanders
away from the plane of the rotating accessory
and run the power tool at maximum no-load
speed for one minute. Damaged accessories
8. Wear personal protective equipment. Depending
on application, use face shield, safety goggles
or safety glasses. As appropriate, wear dust
mask, hearing protectors, gloves and workshop
apron capable of stopping small abrasive or
workpiece fragments. The eye protection must
be capable of stopping flying debris generated
by various operations.
intensity noise may cause hearing loss.
9. Keep bystanders a safe distance away
from work area. Anyone entering the
work area must wear personal protective
equipment.
broken accessory may fly away and cause
10. Hold power tool by insulated gripping
surfaces only, when performing an operation
where the accessory may contact hidden
wiring.
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SAFETY OPERATION MAINTENANCESETUP
11. Never lay the power tool down until the
accessory has come to a complete stop.
12. Do not run the power tool while carrying
it at your side. Accidental contact with the
13. Regularly clean the power tool’s air vents.
The motor’s fan will draw the dust inside
14. Do not operate the power tool near flammable
materials.
15. Do not use accessories that require liquid
coolants. Using water or other liquid coolants
may result in electrocution or shock.
16. Maintain labels and nameplates on the tool.
These carry important safety information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
17. Avoid unintentional starting.
Prepare to begin work before turning on the tool.
18. Do not depress the spindle lock when
starting or during operation.
19. Do not leave the tool unattended when the
Battery Pack is connected. Turn off the tool,
and remove the Battery Pack before leaving.
20. Use clamps (not included) or other practical
ways to secure and support the workpiece to
a stable platform. Holding the work by hand
or against your body is unstable and may
lead to loss of control and personal injury.
21. The battery charger gets hot during
use. The charger’s heat can build up
to unsafe levels and create a fire
hazard if it does not receive adequate
ventilation, due to an electrical fault,
or if it is used in a hot environment.
Do not place the charger on a flammable surface.
Do not obstruct any vents on the charger.
Especially avoid placing the charger on carpets
and rugs; they are not only flammable, but they
also obstruct vents under the charger.
22. This product is not a toy.
Keep it out of reach of children.
23. 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 power switch locked on.
• Properly maintain and inspect
to avoid electrical shock.
24. 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.
Kickback and Related Warnings
Kickback is a sudden reaction to a pinched or
snagged rotating wheel, backing pad, brush
or any other accessory. Pinching or snagging
causes rapid stalling of the rotating accessory
which in turn causes the uncontrolled power
tool to be forced in the direction opposite of the
accessory’s rotation at the point of the binding.
For example, if an abrasive wheel is snagged or
pinched by the workpiece, the edge of the wheel that
is entering into the pinch point can dig into the surface
of the material causing the wheel to climb out or kick
out. The wheel may either jump toward or away from
the operator, depending on direction of the wheel’s
movement at the point of pinching. Abrasive wheels
may also break under these conditions.
Kickback is the result of power tool misuse and/or
incorrect operating procedures or conditions and can be
avoided by taking proper precautions as given below.
1. Maintain a firm grip on the power tool and
position your body and arm to allow you to
resist kickback forces. Always use auxiliary
handle, if provided, for maximum control over
kickback or torque reaction during start-up.
2. Never place your hand near the
rotating accessory. Accessory may
kickback over your hand.
3. Do not position your body in the area where
power tool will move if kickback occurs.
4. Use special care when working corners, sharp
edges etc. Avoid bouncing and snagging the
accessory.
have a tendency to snag the rotating accessory
and cause loss of control or kickback.
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SAFETYOPERATIONMAINTENANCE SETUP
5. Do not attach a saw chain woodcarving
blade or toothed saw blade. Such blades
create frequent kickback and loss of control.
Safety Warnings Specific
for Grinding and Abrasive
Cutting-off Operations
1. Use only wheel types that are recommended
for your power tool and the specific
guard designed for the selected wheel.
cannot be adequately guarded and are unsafe.
2. The guard must be securely attached
to the power tool and positioned for
maximum safety, so the least amount of
wheel is exposed towards the operator.
wheel fragments and accidental contact with wheel.
3. Wheels must be used only for recommended
applications. For example: do not grind with
the side of cut-off wheel. Abrasive cut-off wheels
4. Always use undamaged wheel flanges
that are of correct size and shape for your
selected wheel.
breakage. Flanges for cut-off wheels may
be different from grinding wheel flanges.
5. Do not use worn down wheels from larger
power tools. Wheel intended for larger
6. Dress appropriately. Wear leather
leggings and fire resistant footwear during
Safety Warnings Specific for
Abrasive Cutting-off Operations
1. Do not “jam” the cut-off wheel or apply
excessive pressure. Do not attempt to make
an excessive depth of cut. Overstressing the
to twisting or binding of the wheel in the cut and
2. Do not position your body in line with and
behind the rotating wheel. When the wheel,
3. When wheel is binding or when interrupting a
cut for any reason, switch off the power tool
and hold the power tool motionless until the
wheel comes to a complete stop. Never attempt
to remove the cut-off wheel from the cut while
the wheel is in motion otherwise kickback
may occur. Investigate and take corrective
action to eliminate the cause of wheel binding.
4. Do not restart the cutting operation in
the workpiece. Let the wheel reach full
speed and carefully reenter the cut.
5. Support panels or any oversized
workpiece to minimize the risk of wheel
pinching and kickback.
the line of cut and near the edge of the
6. Use extra caution when making a “pocket cut”
into existing walls or other blind areas.
electrical wiring or objects that can cause kickback.
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SAFETY OPERATION MAINTENANCESETUP
Safety Warnings Specific
for Sanding Operations
Do not use excessively oversized sanding disc
paper. Follow manufacturer’s recommendations
when selecting sanding paper. Larger sanding
snagging, tearing of the disc or kickback.
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. Wear suitable gloves to reduce the
vibration effects on the user.
4. Use tools with the lowest vibration when there
is a choice between different processes.
5. Include vibration-free periods each day of work.
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.
Lithium Battery Safety Warnings
LITHIUM BATTERIES STORE A
LARGE AMOUNT OF ENERGY
AND WILL VENT FIRE OR
EXPLODE IF MISTREATED:
1. Keep Battery Pack dry.
2. DO NOT DO ANY OF THE FOLLOWING
TO THE BATTERY PACK:
a. Open,
b. Drop,
c. Short-circuit,
d. Puncture,
e. Incinerate, or
f. Expose to temperatures greater than 140°F.
3. Charge Battery Pack only according
to its Charger’s instructions.
4. Inspect Battery Pack before every use;
do not use or charge if damaged.
SAVE THESE INSTRUCTIONS.
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SAFETYOPERATIONMAINTENANCE SETUP
GROUNDING
TO PREVENT ELECTRIC SHOCK AND
DEATH FROM INCORRECT GROUNDING:
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 charger. Never remove the
grounding prong from the plug. Do not use the
charger 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.
Extension Cords
Note: Extension cords must not be
used with this item’s Charger.
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SAFETY OPERATION MAINTENANCESETUP
Symbology
Double Insulated
VVolts
Direct Current
AAmperes
n0xxxx/min. No Load Revolutions
per Minute (RPM)
WARNING marking concerning Risk
of Eye Injury. Wear ANSI-approved
safety goggles with side shields.
WARNING marking concerning Risk
of Respiratory Injury. Wear NIOSH-
approved breathing protection rated
for the hazards in your work area.
Read the manual before
set-up and/or use.
WARNING marking
concerning Risk of Fire.
Do not cover Charger
ventilation ducts.
Charge on fireproof surface only.
WARNING marking concerning
Risk of Electric Shock.
Properly connect Charger’s power
cord to appropriate outlet.
WARNING marking concerning
Risk of Explosion.
Do not puncture, short, or open
battery packs and do not charge
damaged battery packs.
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.
Specifications
Battery Hercules 20 V Li-Ion
(sold separately)
Charger Hercules 20V Li-Ion
(sold separately)
No Load Speed n0: 8500/min
Spindle Thread 5/8″- 11 TPI
Max. Accessory Diameter 5" (125mm)
Grinding Wheel Thickness 0.245" - 0.300"
Cut-off Wheel Thickness 0.035" - 0.095"
Combination Wheel
Thickness 0.125" - 0.195"
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SAFETYOPERATIONMAINTENANCE SETUP
Functional Description
1. Auxiliary Handle
2. Spindle Lock
3. Paddle Switch
4. Wheel Guard
5. Wheel Guard Lock Lever
6. Grinding Wheel
7. Battery (sold separately)
2
1
3
4
5
6
7
OPERATION
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:
Make sure that the Paddle Switch is in the
off-position and remove its Battery Pack before
performing any procedure in this section.
Note: For additional information regarding the
parts listed in the following pages, refer to the
Assembly Diagram near the end of this manual.
Charging
Charge battery before using this tool. Follow
instructions included with battery charger
Battery Pack and Charger sold separately.
Adjusting the Wheel Guard
TO PREVENT SERIOUS INJURY:
Do not operate this tool without the
Wheel Guard properly installed.
1. Pull out Lock Lever.
2. Slide the collar of the Wheel Guard
over the rim of the Gear Housing.
3. Rotate the Wheel Guard as needed to
shield you during the planned work.
4. Push in Lock Lever.
5. Check the Wheel Guard to ensure
it is firmly in place. Adjust if
necessary before proceeding.
Clamp
Handle
Wheel
Guard
Installing Side Handle
\TO PREVENT SERIOUS INJURY:
Do not operate this tool with one hand only or
without the Side Handle properly installed.
1. The Side Handle may be installed in one of two
positions, on either side of the Gear Housing.
2. Screw the threaded end of the Side Handle
clockwise into the selected position.
Tighten securely before beginning work.
Side Handle
Socket
Side
Handle
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SAFETY OPERATION MAINTENANCESETUP
Installing a Non-threaded Wheel
1. For a Grinding Wheel, it MUST be:
• rated to at least 8500 RPM.
• no larger than 5" (125mm) diameter.
• fitted with a 5/8″round arbor hole.
• from 0.245" - 0.300" thick.
• suitable for surface grinding, not edge grinding.
• dry and clean.
• proven undamaged by inspection.
For a Cut-Off Wheel, it MUST be:
• rated to at least 8500 RPM.
• no larger than 5″in diameter.
• fitted with a 5/8″round arbor hole.
• from 0.035" - 0.095" thick.
• suitable for edge grinding, not surface grinding
• dry and clean.
• proven undamaged by visual inspection.
WARNING! TO PREVENT SERIOUS
INJURY, When using a Cut-Off Wheel, a
wheel guard designed specifically for Cut-Off
Wheels (not included) must be installed for
adequate protection if the wheel fails.
WARNING! TO PREVENT SERIOUS INJURY,
Use only 4.5″grinding wheels with 4.5″guards.
Use only 5″grinding wheels with 5″guards.
Wrench
Outer Flange
Grinding Wheel
Inner Flange
Wheel Guard
Spindle
Spindle
Lock
2. Press in and hold the Spindle Lock Button
to prevent the Spindle from turning.
3. Remove the Outer Flange.
Keep the Inner Flange in position on the Spindle.
4. Closely inspect the wheel before mounting.
5. For wheels with metal gaskets: Slip the
grinding wheel onto the Spindle with the gasket
first. The gasket should be centered on the
grinding wheel and the wheel and gasket
should rest flat against the Inner Flange.
6. WARNING: To prevent serious
injury, gaskets must be used for all
grinding wheels they are provided with.
Gaskets help prevent grinding wheel damage
and wheel slippage, causes of wheel failure.
Note: The Outer Flange has a step for improved
stability with thick accessories. Keep this step
on the inside for thick accessories. To allow
proper clamping for thin accessories, flip Outer
Flange so this step is on the outside.
7. Thread the Outer Flange onto the Spindle.
Wrench tighten only enough so that the wheel is
securely held on the spindle.
WARNING: To prevent serious injury,
do not overtighten flange. Overtightening can
damage the wheel, causing wheel failure.
Page 11For technical questions, please call 1-888-866-5797.Item 58260
SAFETYOPERATIONMAINTENANCE SETUP
Installing a Threaded Accessory
TO PREVENT INJURY: Wear heavy-duty work
gloves when handling wire wheels and brushes.
These accessories are sharp and can cause
injury. Do not exceed maximum rated speed of
brush. Do not use a damaged brush. Replace
damaged brushes immediately. Damaged
or worn brushes will forcefully shoot wires
into all objects not covered by the guard.
1. The accessory MUST be:
• rated to at least 8500 RPM
• no larger than 5″in diameter
• fitted with a threaded opening of 5/8″- 11 TPI
• undamaged
• a sanding disc and backing pad, a
sanding flap disc, a wire wheel or a wire
cup brush (accessories not included).
2. Press in and hold the Spindle Lock Button
to prevent the Spindle from turning.
3. Remove the Outer Flange and the
Inner Flange and keep in a safe place.
4. Thread disc accessory firmly onto the
Spindle. Wrench tighten onto the Spindle.
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. Secure loose workpieces using a vise or clamps
(not included) to prevent movement while working.
3. There must not be hazardous objects, such
as utility lines or foreign objects, nearby
that will present a hazard while working.
4. You must use personal safety equipment including,
but not limited to, ANSI-approved eye and hearing
protection, as well as heavy-duty work gloves.
5. Before beginning work, provide for sparks
and debris that will fly off the work surface.
General Operation
TO PREVENT SERIOUS INJURY: Grip
the tool firmly in both hands.
1. Insert a fully charged Battery Pack into the
Grinder, making sure it clicks in securely.
2. Flip the Switch Lock off then squeeze the
Paddle Switch to start the tool. Release
the Paddle Switch to stop the tool.
Switch
Lock
Paddle
Switch
3. Allow the tool to come up to full speed
before touching the work material.
For grinding or sanding operations, apply the
wheel or disc to the work material at a 10°– 15°
angle, allowing the tool to operate at full speed.
If the tool bogs down, use lighter pressure.
To create a smoother surface, keep the
tool moving over the work surface.
For abrasive cutting-off operations,
apply the cut-off wheel straight into the work
material using only the edge of the wheel,
allowing the tool to operate at full speed. If
the tool bogs down, use lighter pressure.
WARNING! TO PREVENT SERIOUS INJURY:
Do not grind with the side of the cut-off
wheel. Abrasive cut-off wheels are intended
for peripheral grinding; side forces applied to
these wheels may cause them to shatter.
NOTICE: TO PREVENT TOOL DAMAGE:
Only use the tool for 15-20 minutes at a time.
Allow the tool to cool completely before next use.
4. TO PREVENT ACCIDENTS, AFTER USE:
Turn off the tool.
WARNING! TO PREVENT SERIOUS INJURY:
Allow the tool to come to a complete stop
before setting it down.
Remove the tool’s Battery Pack. Clean, then
store the tool indoors out of children’s reach.
Page 12 For technical questions, please call 1-888-866-5797. Item 58260
SAFETY OPERATION MAINTENANCESETUP
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:
Make sure that the Paddle Switch is in the
off-position and remove its Battery Pack 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.
Page 13For technical questions, please call 1-888-866-5797.Item 58260
SAFETYOPERATIONMAINTENANCE SETUP
Cleaning, Maintenance,
and Lubrication
1. BEFORE EACH USE, inspect the general
condition of the tool. Check for:
• leaking, swollen, or cracked battery pack,
• loose hardware,
• misalignment or binding of moving parts,
• 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. Periodically, wear ANSI-approved safety goggles
and NIOSH-approved breathing protection
and blow dust and grit out of the motor
vents using dry compressed air.
4. Disconnect battery pack and store battery pack,
charger, and tool in dry, indoor area out of
reach of children and away from metal objects
(i.e., paperclips, coins) to prevent shorting.
Accessory Storage and Handling
1. Handle accessories carefully to prevent
dropping or bumping. Do not use wheels
that have been dropped or bumped.
2. Store accessories in shelves, racks, boxes, or
drawers. Keep storage area dry and above
freezing. Any grinding or cut-off wheels exposed to
humidity or freezing temperatures must not be used.
Page 14 For technical questions, please call 1-888-866-5797. Item 58260
SAFETY OPERATION MAINTENANCESETUP
Troubleshooting
Problem Possible Causes Likely Solutions
Tool will not start. 1. Battery Pack not properly connected.
2. Battery Pack not properly charged.
3. Battery Pack burnt-out.
4. Tool’s thermal reset
breaker tripped (if equipped).
5. Internal damage or wear.
(Switch, for example.)
1. Remove Battery Pack, make sure there
are no obstructions, reinsert the Battery
Pack according to its shape (it should
only fit one way), and press firmly until
the Battery Pack locks in place.
2. Make sure Charger is connected and
operating properly. Give enough time
for Battery Pack to recharge properly.
3. Dispose of old Battery Pack
properly or recycle. Replace Battery Pack.
4. Turn off tool and allow to cool.
Press reset button on tool.
5. Have technician service tool.
Tool operates slowly. 1. Excess pressure applied to workpiece.
2. Battery Pack power low.
3. Battery Pack burnt-out.
1. Decrease pressure, allow
tool to do the work.
2. Recharge Battery Pack.
3. Dispose of old Battery Pack
properly or recycle. Replace Battery Pack.
Performance
decreases over time.
Battery Pack wearing out. Battery Pack capacity will gradually
decrease through use. If symptoms
are severe, recycle old Battery Pack
(or dispose of properly) and replace it.
Excessive noise
or rattling.
Internal damage or wear.
(Bearings, for example.)
Have technician service tool.
Overheating. 1. Forcing tool to work too fast.
2. Blocked motor housing vents.
1. Allow tool to work at its own rate.
2. Wear ANSI-approved safety goggles
and NIOSH-approved dust mask/
respirator while blowing dust out of
motor using compressed air.
Tool does not
operate effectively.
1. Accessory loose.
2. Accessory damaged, worn or
wrong type for the material.
1. Confirm accessory arbor is correct
and Outer Flange/Arbor Nut is tight.
2. Check condition and type of disc accessory.
Use only proper type of disc
accessory in good condition.
Follow all safety precautions whenever diagnosing or servicing
the tool. Disconnect power supply before service.
Page 15For technical questions, please call 1-888-866-5797.Item 58260
SAFETYOPERATIONMAINTENANCE SETUP
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. Specify UPC 193175434838 when ordering parts.
26677 Agoura Road • Calabasas, CA 91302 • 1-888-866-5797
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.
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