Bauer 1919C-B Assembly instructions

For Best Results Use
3.0 Amp Hour Battery
(Sold Separately)
Base
Plate
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1919C-B
20V CORDLESS
DETAIL SANDER
56178
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 near the assembly diagram (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. 23c
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©2023 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.

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SAFETY OPERATION MAINTENANCESETUP
Table of Contents
Safety ......................................................... 2
Specifications ............................................. 8
Setup .......................................................... 8
Operation................................................... 11
Maintenance.............................................. 12
Parts List and Diagram.............................. 14
Warranty .................................................... 16
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 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.
The term ″power tool″ in the warnings refers to your battery-operated (cordless) 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.

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SAFETYOPERATIONMAINTENANCE SETUP
Electrical Safety
Do not expose power tools to rain or wet conditions.
Water entering a power tool will increase 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
of inattention while operating power tools
may result in serious personal injury.
2. Use safety equipment. Always wear eye
protection. Safety 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/trigger 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.
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
jewelry. Keep your hair, clothing and gloves
away from moving parts. Loose clothes, jewelry
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
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.
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 switch/trigger
does not turn it on and off.
Any power tool that cannot be controlled with the
switch/trigger is dangerous and must be repaired.
3. Disconnect the battery pack 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.
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.

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SAFETY OPERATION MAINTENANCESETUP
Battery tool use and care
1. Recharge only with the charger specified by
the manufacturer. A charger that is suitable
for one type of battery pack may create a risk
of fire when used with another battery pack.
2. Use power tools only with specifically
designated battery packs. Use of any other
battery packs may create a risk of injury and fire.
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 power tool is maintained.
Safety Warnings Common for Sanding Operations
1. This power tool is intended to function
as a sander. 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 grinding, wire brushing,
polishing, or cutting-off 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
accessory can be attached to your power tool,
it does not assure safe operation.
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
their RATED SPEED can break and fly apart.
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
hardware of the power tool will run out of balance,
vibrate excessively and may cause loss of control.
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,
wire brush for loose or cracked wires. 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 will
normally break apart during this test time.
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. The eye protection must
be capable of stopping flying debris generated by
various operations. The dust mask or respirator
must be capable of filtering out particles generated
by your operation. Prolonged exposure to high
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. Fragments of workpiece or of a
broken accessory may fly away and cause
injury beyond immediate area of operation.

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SAFETYOPERATIONMAINTENANCE SETUP
10. Hold power tool by insulated gripping surfaces
only, when performing an operation where
the accessory may contact hidden wiring
or its own cord. An accessory contacting a
″live″ wire may make exposed metal parts of
the power tool ″live″ and shock the operator.
11. Never lay the power tool down until the
accessory has come to a complete stop.
The spinning accessory may grab the surface
and pull the power tool out of your control.
12. Do not run the power tool while carrying
it at your side. Accidental contact with the
spinning accessory could snag your clothing,
pulling the accessory into your body.
13. Regularly clean the power tool’s air vents.
The motor’s fan will draw the dust inside
the housing and excessive accumulation of
powdered metal may cause electrical hazards.
14. Do not operate the power tool near flammable
materials. Sparks could ignite these 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.
• Properly ground power cord. Ground Fault Circuit
Interrupter (GFCI) should also be implemented
– it prevents sustained 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.
The operator can control torque reactions or
kickback forces, if proper precautions are taken.
2. Never place your hand near the
rotating accessory. Accessory may
kickback over your hand.

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SAFETY OPERATION MAINTENANCESETUP
3. Do not position your body in the area where
power tool will move if kickback occurs.
Kickback will propel the tool in direction opposite
to the wheel’s movement at the point of snagging.
4. Use special care when working corners, sharp
edges etc. Avoid bouncing and snagging the
accessory. Corners, sharp edges or bouncing
have a tendency to snag the rotating accessory
and cause loss of control or kickback.
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 Sanding Operations
Do not use excessively oversized sanding disc paper. Follow manufacturer’s recommendations
when selecting sanding paper. Larger sanding paper extending beyond the sanding pad
presents a laceration hazard and may cause snagging, tearing of the disc or kickback.
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.
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.
SAVE THESE INSTRUCTIONS.

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SAFETYOPERATIONMAINTENANCE SETUP
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.)
Extension Cords
Note: Extension cords must not be used with this item’s Charger.
Symbology
Double Insulated
VVolts
~Alternating 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.

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SAFETY OPERATION MAINTENANCESETUP
Specifications
Battery Type Bauer 20V Li‑Ion (sold separately)
No Load Speed 11,000 OPM
Sandpaper Hook and Loop,
5‑3/8" L x 3‑3/4" W
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:
Make sure that the Power 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.
ASSEMBLY
Installing the Vacuum Adapter
1. Remove the battery pack before
installing the Vacuum Adapter.
2. The Vacuum Adapter is installed on the side
of the Detail Sander, under the Dust Flap.
3. Pull the Dust Flap up and insert the Vacuum
Adapter into the hole. Push in to secure.
4. Connect a vacuum with a 1‑1/4" diameter
vacuum hose to end of Vacuum Adapter.
Note: When the Detail Sander is not connected
to a vacuum, do not install the Vacuum Adapter
and keep the Dust Flap closed securely.
Dust
Flap
Vacuum
Adapter
To
Vacuum

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SAFETYOPERATIONMAINTENANCE SETUP
Installing the Sandpaper
Note; This Detail Sander uses
hook and loop Sandpaper.
1. Before installing the sandpaper, make
sure the Base Plate is free of dust and dirt,
and press Detail Sander’s Switch off.
2. Line up the hook and loop Sandpaper with
the Base Plate and press together.
3. Remove used Sandpaper by peeling
one edge away from the Base Plate
until the whole sheet is free.
NOTICE: Do not use torn or severely worn
or damaged sandpaper. To do so could
damage the surface of the Base Plate.
Installing the Battery Pack
Note: Battery pack and Charger sold separately.
Charge battery after unpacking and before using this tool. Follow instructions included with battery charger.
1. Press Switch off then insert a fully charged
battery pack into the Battery Receptacle
until it clicks in place.
2. To remove, push the latch on the
battery pack and pull up.
Battery
Receptacle

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SAFETY OPERATION MAINTENANCESETUP
Functions
Base Plate
Switch
Battery
Receptacle
(on back)

Page 11For technical questions, please call 1-888-866-5797.Item 56178
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:
Make sure that the Power Switch is in the off-position and remove its
Battery Pack before performing any procedure in this section.
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.
Sanding Instructions
TO PREVENT SERIOUS INJURY: Grip the tool firmly in both hands.
1. Wipe the work surface clean of all dirt and debris,
especially that of previous
coarser sanding sessions, which will scratch
the surface of a finer grit sanding session.
2. Attach the desired grit sandpaper
(sold separately) onto the Base Plate.
CAUTION! If the Detail Sander is not
connected to a vacuum, make sure
the Dust Flap is closed securely.
3. Press Switch off, then connect the battery pack.
4. To begin, grip the tool with both hands and
press the Switch on to start the tool. If
connected to a vacuum, start the vacuum.
5. Wait until the tool has reached full speed,
then gently contact the surface.
6. Keep heavy pressure off of the tool when operating.
Allow the tool to do the work.
NOTICE: Do not cover air vents.
7. Move the tool in a uniform pattern up and down or
side to side while sanding to ensure even sanding.
8. Periodically, stop the tool and check for:
• sandpaper wear. Replace worn
sandpaper as needed.
• dust accumulation under the Dust
Flap (if not using a vacuum). Clean
away debris then close Dust Flap.
Note: When sanding for extended periods of time, the
motor may overheat. If this occurs, turn off the sander
and let it come to a complete stop before removing from
workpiece. Allow the motor to cool before resuming.
9. To prevent accidents, after use:
a. Turn off the tool by pressing the Switch off.
CAUTION! Allow the tool to come to a
complete stop before setting it down.
b. Stop the vacuum and disconnect
it from the Sander.
c. Remove the tool’s Battery Pack. Clean, then
store the tool indoors out of children’s reach.

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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 Power Switch/Trigger 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.
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,
• clean away debris accumulated under
the Dust Flap. When clean, be sure
to close the Dust Flap securely.
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.
5. Li‑Ion battery must be recycled or
disposed of properly. Do not open, crush,
heat above 140° F or incinerate.

Page 13For technical questions, please call 1-888-866-5797.Item 56178
SAFETYOPERATIONMAINTENANCE SETUP
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. (Carbon
brushes or 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.
1. Carbon brushes worn or damaged.
2. Battery Pack wearing out.
1. Have qualified technician replace brushes.
2. 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.
(Carbon brushes or 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
grind, sand or
brush 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 14 For technical questions, please call 1-888-866-5797. Item 56178
SAFETY OPERATION MAINTENANCESETUP
Note: Some parts are listed and shown for illustration purposes only, and are not available
individually as replacement parts. Specify UPC 792363561785 when ordering parts.
Part Description Qty.
1 Left Housing 1
2 Switch Cover 1
3 Switch 1
4 Wire 1
5 Right Housing 1
6 Motor 1
7 Bearing,Ø8 x Ø22 x 7 1
8 PCB 1
9 Front Support 1
10 Shaft 1
11 Rear Support 1
12 Fan 1
13 Bearing Cover 1
Part Description Qty.
14 Bearing, Ø8 x Ø24 x8 1
15 Fan Cover 1
16 Pin 1
17 Ring 1
18 Platen, 136 x 96 x 16 1
19 Base Plate, 136 x 96 x 8 1
20 Sandpaper 3
21 Dust Flap 1
22 Vacuum Adapter 1
23 Screw, ST3 x 8 3
24 Screw, ST4 x 8 9
25 Screw, ST4 x 16 6
Parts List and Diagram
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS 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.
Parts List

Page 15For technical questions, please call 1-888-866-5797.Item 56178
SAFETYOPERATIONMAINTENANCE SETUP
Assembly Diagram
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Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.

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.