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61557
6" BUFFER
®
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 date code 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. 26j
When unpacking, make sure that the product is intact and
undamaged. If any parts are missing or broken, please
visit harborfreight.com/customer-support/contact-us
as soon as possible.
Copyright
©
2026 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
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Item 61557
SaFety OperatiOn MaintenanceSetup
table of contents
Safety ......................................................... 2
Specifications ............................................. 6
Setup .......................................................... 6
Operation .................................................... 7
Maintenance ............................................... 8
Component List and Diagram .................... 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 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.
1. KEEP GUARDS IN PLACE and in working order.
2. REMOVE ADJUSTING KEYS AND
WRENCHES. Form habit of checking to
see that keys and adjusting wrenches are
removed from tool before turning it on.
3. KEEP WORK AREA CLEAN.
Cluttered areas and benches invite accidents.
4. DON’T USE IN DANGEROUS ENVIRONMENT.
Don’t use power tools in damp or wet locations,
or expose them to rain. Keep work area well lighted.
5. KEEP CHILDREN AWAY. All visitors should
be kept safe distance from work area.
6. MAKE WORKSHOP KID PROOF with padlocks,
master switches, or by removing starter keys.
7. DON’T FORCE TOOL. It will do the job better
and safer at the rate for which it was designed.
8. USE RIGHT TOOL. Don’t force tool or attachment
to do a job for which it was not designed.
Page 3
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Item 61557
SaFetyOperatiOnMaintenance Setup
table a: recOMMenDeD MiniMuM Wire GauGe
FOr eXtenSiOn cOrDS
(120 VOLt)
naMepLate
aMpereS
(at full load)
eXtenSiOn cOrD
LenGtH
25′ 50′ 100′ 150′
0 – 6 18 16 16 14
6.1 – 10 18 16 14 12
10.1 – 12 16 16 14 12
12.1 – 16 14 12 Do not use.
9. USE PROPER EXTENSION CORD. Make sure your
extension cord is in good condition. When using
an extension cord, be sure to use one heavy
enough to carry the current your product will draw.
An undersized cord will cause a drop in line voltage
resulting in loss of power and overheating.
Table A shows the correct size to use depending
on cord length and nameplate ampere rating.
If in doubt, use the next heavier gauge.
The smaller the gauge number, the heavier the cord.
10. WEAR PROPER APPAREL. Do not wear
loose clothing, gloves, neckties, rings, bracelets,
or other jewelry which may get caught in moving
parts. Nonslip footwear is recommended.
Wear protective hair covering to contain long hair.
11. ALWAYS USE SAFETY GLASSES. Also use
face or dust mask if cutting operation is dusty.
Everyday eyeglasses only have impact resistant
lenses, they are NOT safety glasses.
12. SECURE WORK. Use clamps or a vise to
hold work when practical. It’s safer than using your
hand and it frees both hands to operate tool.
13. DON’T OVERREACH.
Keep proper footing and balance at all times.
14. MAINTAIN TOOLS WITH CARE. Keep
tools sharp and clean for best and safest
performance. Follow instructions for
lubricating and changing accessories.
15. DISCONNECT TOOLS before servicing;
when changing accessories, such as
blades, bits, cutters, and the like.
16. REDUCE THE RISK OF UNINTENTIONAL
STARTING. Make sure switch is in
off position before plugging in.
17. USE RECOMMENDED ACCESSORIES.
Consult the owner’s manual for recommended
accessories. The use of improper accessories
may cause risk of injury to persons.
18. NEVER STAND ON TOOL.
Serious injury could occur if the tool is tipped or
if the cutting tool is unintentionally contacted.
19. CHECK DAMAGED PARTS. Before further use
of the tool, a guard or other part that is damaged
should be carefully checked to determine that
it will operate properly and perform its intended
function – check for alignment of moving parts,
binding of moving parts, breakage of parts,
mounting, and any other conditions that may
affect its operation. A guard or other part that is
damaged should be properly repaired or replaced.
20. DIRECTION OF FEED.
Feed work into a blade or cutter buffing wheel on
the lower quarter of the buffing wheel against the
direction of rotation of the blade or cutter only.
21. NEVER LEAVE TOOL RUNNING UNATTENDED.
TURN POWER OFF. Don’t leave tool
until it comes to a complete stop.
Page 4
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Item 61557
SaFety OperatiOn MaintenanceSetup
Grounding instructions
tO preVent eLectric SHOcK anD DeatH FrOM incOrrect
GrOunDinG Wire cOnnectiOn reaD anD FOLLOW tHeSe inStructiOnS:
110-120 Vac Grounded tools: tools with three prong plugs
1. In the event of a malfunction or breakdown,
grounding provides a path of least resistance for
electric current to reduce the risk of electric shock.
This tool is equipped with an electric cord having an
equipment-grounding conductor and a grounding
plug. The plug must be plugged into a matching
outlet that is properly installed and grounded in
accordance with all local codes and ordinances.
2. Do not modify the plug provided – if it will
not fit the outlet, have the proper outlet
installed by a qualified electrician.
3. Improper connection of the equipment-grounding
conductor can result in a risk of electric shock.
The conductor with insulation having an outer
surface that is green with or without yellow
stripes is the equipment-grounding conductor.
If repair or replacement of the electric cord or
plug is necessary, do not connect the equipment-
grounding conductor to a live terminal.
4. Check with a qualified electrician or service
personnel if the grounding instructions are
not completely understood, or if in doubt as
to whether the tool is properly grounded.
5. Use only 3-wire extension cords that
have 3-prong grounding plugs and 3-pole
receptacles that accept the tool’s plug.
6. Repair or replace damaged or
worn cord immediately.
Grounding
pin
125 Vac 3-prong plug and Outlet
(for up to 125 Vac and up to 15 a)
7. This tool is intended for use on a circuit that has
an outlet that looks like the one illustrated above in
125 Vac 3-prong plug and Outlet. The tool has
a grounding plug that looks like the plug illustrated
above in 125 Vac 3-prong plug and Outlet.
8. The outlet must be properly installed and grounded
in accordance with all codes and ordinances.
9. Do not use an adapter to connect
this tool to a different outlet.
Page 5
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Item 61557
SaFetyOperatiOnMaintenance Setup
Buffer Safety Warnings
For your Own Safety read instruction
Manual Before Operating Buffer
1. Wear eye protection.
2. Use buffing wheel suitable for speed of buffer.
3. Do not buff with side of wheel.
4. DO nOt uSe GrinDinG WHeeLS Or OtHer
unintenDeD acceSSOrieS On tHiS BuFFer.
5. Do not wear gloves, necktie, or loose clothing.
6. DO nOt Operate WitH any GuarD
DiSaBLeD, DaMaGeD, Or reMOVeD. Moving
guards must move freely and close instantly.
7. The use of accessories or attachments not
recommended by the manufacturer may
result in a risk of injury to persons.
8. When servicing use only identical replacement parts.
9. 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.
10. 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.
11. Industrial applications must follow OSHA guidelines.
12. Maintain labels and nameplates on the tool.
These carry important safety information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
13. Avoid unintentional starting.
Prepare to begin work before turning on the tool.
14. 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.
15. The warnings, precautions, and instructions
discussed in this instruction manual cannot cover all
possible conditions and situations that may occur.
It must be understood by the operator that
common sense and caution are factors
which cannot be built into this product,
but must be supplied by the operator.
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. Grip workpiece as lightly as possible (while still
keeping safe control of it). 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.
Page 6
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Item 61557
SaFety OperatiOn MaintenanceSetup
Specifications
Electrical Rating 120VAC / 60Hz / 4A
Motor No Load Speed 3450 RPM
Max. Accessory Diameter 6″
Arbor Size 1/2″
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.
tO preVent SeriOuS inJury FrOM acciDentaL OperatiOn:
turn the power Switch of the tool off and unplug the tool from its electrical outlet
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.
Mounting
Before operation, use 2 bolts (sold separately) to mount
the Buffer securely to a stable work surface or stand.
Functions
Hard Buffing Wheel
Soft Buffing Wheel
power Switch
Base
Hard Buffing Wheel: Removes material from
workpiece; surface scratches, nicks or tooling marks.
Soft Buffing Wheel: Produces a high luster finish.
Page 7
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Item 61557
SaFetyOperatiOnMaintenance Setup
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:
turn the power Switch of the tool off and unplug the tool from its electrical outlet
before performing any procedure in this section.
installing a Buffing Wheel
tO preVent SeriOuS inJury FrOM acceSSOry FaiLure:
DO nOt uSe GrinDinG WHeeLS Or OtHer unintenDeD acceSSOrieS On tHiS BuFFer.
1. Add a Spacer and Wheel Flange with cupped
surface facing out onto the Spindle.
2. Add Buffing Wheel onto Spindle
against the inner Wheel Flange.
3. Add another Wheel Flange onto the Spindle with its
cupped surface sitting flat against the Buffing Wheel.
4. Facing the Power Switch:
a. Right side, thread on the silver M12 Nut
and tighten securely.
b. Left side, thread on the brass, reverse thread,
M12 Nut and tighten securely.
Spindle
Spacer
Buffing Wheel
nut
Wheel
Flanges
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. There must not be objects, such as utility lines,
nearby that will present a hazard while working.
General Operating instructions
cautiOn! tO preVent inJury: Wear
ANSI-approved safety glasses.
1. Make sure that the Power Switch is in the
off-position and plug in the tool. Turn on the tool.
2. Apply desired polishing compound (hard
or soft, sold separately) onto the lower
quarter of the Buffing Wheel(s).
note: Practice on a sample workpiece
before buffing actual workpiece.
Good buffing results require experience.
cautiOn! tO preVent inJury FrOM KicKBacK:
Only apply the workpiece to the lower quarter
of the Buffing Wheel(s). Objects can be thrown
forcefully away from a Buffing Wheel causing injury.
3. Using two hands, firmly hold the workpiece
and gently contact Buffing Wheel.
4. Move the workpiece with the direction of the
wheel, using a medium to hard pressure.
note: The correct pressure must be applied to the
workpiece to provide the best finish. Excessive
pressure may slow down the action of the Buffing Wheel
as well as cause uneven marks on the workpiece.
5. Every few minutes, turn off tool and check the
condition and wear of the Buffing Wheels. Replace
a Buffing Wheel when it is worn or damaged.
6. When buffing is finished, remove the workpiece
from the Buffing Wheel before turning Buffer off.
7. To prevent accidents, turn off the tool and unplug
the tool from its electrical outlet after use. Clean,
then store the tool indoors out of children’s reach.
Page 8
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Item 61557
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:
turn the power Switch of the tool off 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,
• 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. To clean the Buffing Wheels,
hand wash and air dry using only mild detergents.
Do not immerse any part of the tool in liquid.
3. If a Buffing Wheel has become too hard, use a
stiff wire brush (sold separately) to fluff it up.
4. Periodically, wear ANSI-approved
safety goggles and NIOSH-approved
breathing protection and blow dust out of
the motor vents using dry compressed air.
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 9
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Item 61557
SaFetyOperatiOnMaintenance Setup
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.)
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.
Extension cord too long or
wire size too small.
Eliminate use of extension cord. If an extension cord
is needed, use one with the proper diameter for its
length and load. See table a on page 3.
Performance
decreases
over time.
1. Accessory worn or damaged.
2. Carbon brushes worn or damaged.
1. Keep cutting accessories in good repair.
Replace as needed.
2. Have qualified technician replace brushes.
Excessive noise
or rattling.
Internal damage or wear. (Carbon
brushes or bearings, for example.)
Have technician service tool.
Overheating. 1. Forcing machine to work too fast.
2. Accessory worn or damaged.
3. Blocked motor housing vents.
4. Motor being strained by long or
small diameter extension cord.
1. Allow machine to work at its own rate.
2. Keep accessories in good repair.
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 table a on page 3.
Follow all safety precautions whenever diagnosing or servicing the tool.
Disconnect power supply before service.
Page 10
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Item 61557
SaFety OperatiOn MaintenanceSetup
component List and Diagram
pLeaSe reaD tHe FOLLOWinG careFuLLy
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE COMPONENT LIST AND ASSEMBLY
DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR
DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE
OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS QUALIFIED
TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR
EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY
CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK
AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT
PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.
component List
part Description Qty
1 Brass M12 Nut (Reverse Thread) 1
2 Wheel Flange 4
3 Soft Buffing Wheel 1
4 Spacer 2
5 Nut M5 2
6 End Cap 2
7 Wave Washer Ø35 1
8 Ball Bearing 6202 2
9 Spindle 1
10 Fan 1
11 Stator 1
12 Cross-Head Screw M5x200 2
13 Hard Buffing Wheel 1
14 Silver M12 Nut 1
15 Power Cord 1
16 Black Cross-Head Screw M5x8 4
part Description Qty
17 Cord Clip 1
18 Clip Plate 1
19 Base 1
20 Capacitor 1
21 Cross-Head Screw M6x20 2
22 Cross-Head Screw M4x12 4
23 Rubber Foot 4
24 Base Cover 1
25 Cross-Head Screw M4x8 2
26 Capacitor Bracket 1
27 Nut M8 1
28 Switch Cover 1
29 Power Switch 1
30 Cord Bushing 1
31 Nut M6 1
32 Tooth Locking Washer Ø4 1
record product’s Date code Here:
note: if product has no date code, record month and year of purchase instead.
note: The component list and assembly diagram are shown for reference only.
To view all currently available replacement parts, please visit harborfreight.com/parts
Specify UPC 193175611994 when ordering parts.
Page 11
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Item 61557
SaFetyOperatiOnMaintenance Setup
assembly Diagram
9
8
11
6
12
4
2
13 2 14
15
16
17
21
20
27
25
26
28
29
22 24
10
30
31 25
32
16
16
18
19
23
2
6 7
1
3
5 8
42
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.
For product assistance, visit harborfreight.com/customer-support/contact-us
®
