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email our technical support at: [email protected]
21701EB
7-1/4"
CIRCULAR SAW
57672
Blade Sold Separately
Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the
back of the manual (or month and year of purchase if product has no number). Keep this manual and the
receipt in a safe and dry place for future reference. 23f
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1‑888‑866‑5797 as soon as possible.
Copyright
©
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.
Page 2 For technical questions, please call 1-888-866-5797. Item 57672
SaFety OperatiOn MaintenanceSetup
table of contents
Safety ......................................................... 2
Specifications ............................................. 8
Setup .......................................................... 9
Operation ................................................... 10
Maintenance .............................................. 13
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, instructions, illustrations and specifications provided with this power tool.
Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
The term “power tool” in the warnings refers to your mains-operated (corded)
power tool or battery-operated (cordless) power tool.
1. Work area safety
a. Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
b. Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust. Power tools
create sparks which may ignite the dust or fumes.
c. Keep children and bystanders away
while operating a power tool. Distractions
can cause you to lose control.
2. electrical safety
a. power tool plugs must match the outlet.
never modify the plug in any way. Do not use
any adapter plugs with earthed (grounded)
power tools. Unmodified plugs and matching
outlets will reduce risk of electric shock.
b. avoid body contact with earthed or
grounded surfaces, such as pipes,
radiators, ranges and refrigerators.
There is an increased risk of electric shock
if your body is earthed or grounded.
c. Do not expose power tools to rain or wet
conditions. Water entering a power tool
will increase the risk of electric shock.
Page 3For technical questions, please call 1-888-866-5797.Item 57672
SaFetyOperatiOnMaintenance Setup
d. Do not abuse the cord. never use the cord
for carrying, pulling or unplugging the power
tool. Keep cord away from heat, oil, sharp
edges or moving parts. Damaged or entangled
cords increase the risk of electric shock.
e. When operating a power tool outdoors,
use an extension cord suitable for outdoor
use. Use of a cord suitable for outdoor
use reduces the risk of electric shock.
f. if operating a power tool in a damp location
is unavoidable, use a ground fault circuit
interrupter (GFci) protected supply. Use of
a GFCI reduces the risk of electric shock.
3. personal safety
a. Stay alert, watch what you are doing and
use common sense when operating a
power tool. Do not use a power tool while
you are tired or under the influence of
drugs, alcohol or medication. A moment
of inattention while operating power tools
may result in serious personal injury.
b. use personal protective equipment. always
wear eye protection. Protective equipment
such as dust mask, non-skid safety shoes, hard
hat, or hearing protection used for appropriate
conditions will reduce personal injuries.
c. prevent unintentional starting. ensure the
switch is in the off-position before connecting
to power source and/or battery pack, picking
up or carrying the tool. Carrying power tools
with your finger on the switch or energizing power
tools that have the switch on invites accidents.
d. remove any adjusting key or wrench
before turning the power tool on. A wrench
or a key left attached to a rotating part of the
power tool may result in personal injury.
e. Do not overreach. Keep proper footing and
balance at all times. This enables better control
of the power tool in unexpected situations.
f. Dress properly. Do not wear loose clothing
or jewelry. Keep your hair, clothing
and gloves away from moving parts.
Loose clothes, jewelry or long hair
can be caught in moving parts.
g. if devices are provided for the connection
of dust extraction and collection
facilities, ensure these are connected
and properly used. Use of dust collection
can reduce dust-related hazards.
h. Do not let familiarity gained from frequent
use of tools allow you to become
complacent and ignore tool safety
principles. A careless action can cause
severe injury within a fraction of a second.
i. Only use safety equipment that has been
approved by an appropriate standards agency.
Unapproved safety equipment may not provide
adequate protection. Eye protection must be
ANSI‑approved and breathing protection
must be NIOSH‑approved for the
specific hazards in the work area.
j. Avoid unintentional starting.
Prepare to begin work before turning on the tool.
k. Do not lay the tool down until it has come to
a complete stop. Moving parts can grab the
surface and pull the tool out of your control.
l. When using a handheld power tool,
maintain a firm grip on the tool with
both hands to resist starting torque.
m. Do not depress the spindle lock when
starting or during operation.
n. 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.
o. This product is not a toy.
Keep it out of reach of children.
p. People with pacemakers should consult their
physician(s) before use. Electromagnetic fields
in close proximity to heart pacemaker could
cause pacemaker interference or pacemaker
failure. In addition, people with pacemakers
should:
• Avoid operating alone.
• Do not use with Trigger locked on.
• Properly maintain and inspect to avoid
electrical shock.
• Properly ground power cord.
Ground Fault Circuit Interrupter (GFCI)
should also be implemented – it prevents
sustained electrical shock.
q. The warnings, precautions, and instructions
discussed in this instruction manual cannot
cover all possible conditions and situations
that may occur. It must be understood by the
operator that common sense and caution are
factors which cannot be built into this product,
but must be supplied by the operator.
4. power tool use and care
a. Do not force the power tool. use the correct
power tool for your application. The correct
power tool will do the job better and safer
at the rate for which it was designed.
b. Do not use the power tool if the switch
does not turn it on and off. Any power
tool that cannot be controlled with the switch
is dangerous and must be repaired.
Page 4 For technical questions, please call 1-888-866-5797. Item 57672
SaFety OperatiOn MaintenanceSetup
c. Disconnect the plug from the power
source and/or remove the battery pack,
if detachable, from the power tool before
making any adjustments, changing
accessories, or storing power tools.
Such preventive safety measures reduce the
risk of starting the power tool accidentally.
d. Store idle power tools out of the reach of
children and do not allow persons unfamiliar
with the power tool or these instructions
to operate the power tool. Power tools are
dangerous in the hands of untrained users.
e. Maintain power tools and accessories.
check for misalignment or binding of moving
parts, breakage of parts and any other
condition that may affect the power tool’s
operation. if damaged, have the power tool
repaired before use. Many accidents are
caused by poorly maintained power tools.
f. Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
g. use the power tool, accessories and tool bits
etc. in accordance with these instructions,
taking into account the working conditions
and the work to be performed. Use of the
power tool for operations different from those
intended could result in a hazardous situation.
h. Keep handles and grasping surfaces
dry, clean and free from oil and grease.
Slippery handles and grasping surfaces
do not allow for safe handling and control
of the tool in unexpected situations.
5. Service
a. Have your power tool serviced by a
qualified repair person using only identical
replacement parts. This will ensure that
the safety of the power tool is maintained.
b. Maintain labels and nameplates on the tool.
These carry important safety information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
6. cutting procedures
a. DanGer: Keep hands away from
cutting area and the blade. Keep your
second hand on auxiliary handle, or
motor housing. If both hands are holding
the saw, they cannot be cut by the blade.
b. Do not reach underneath the workpiece.
The guard cannot protect you from
the blade below the workpiece.
c. adjust the cutting depth to the thickness of
the workpiece. Less than a full tooth of the blade
teeth should be visible below the workpiece.
d. never hold the workpiece in your hands or
across your leg while cutting. Secure the
workpiece to a stable platform. It is important
to support the work properly to minimise body
exposure, blade binding, or loss of control.
e. Hold the power tool by insulated gripping
surfaces, when performing an operation
where the cutting tool may contact
hidden wiring or its own cord. Contact
with a “live” wire will also make exposed
metal parts of the power tool “live” and
could give the operator an electric shock.
f. When ripping, always use a rip fence or
straight edge guide. This improves the accuracy
of cut and reduces the chance of blade binding.
g. always use blades with correct size
and shape (diamond versus round) of
arbor holes. Blades that do not match
the mounting hardware of the saw will
run off-center, causing loss of control.
h. never use damaged or incorrect blade
washers or bolt. The blade washers and
bolt were specially designed for your saw, for
optimum performance and safety of operation.
7. Kickback causes and related warnings
‑ Kickback is a sudden reaction to a pinched,
jammed or misaligned saw blade, causing
an uncontrolled saw to lift up and out of
the workpiece toward the operator;
‑ When the blade is pinched or jammed
tightly by the kerf closing down, the blade
stalls and the motor reaction drives the
unit rapidly back toward the operator;
‑ If the blade becomes twisted or misaligned
in the cut, the teeth at the back edge of the
blade can dig into the top surface of the
wood causing the blade to climb out of the
kerf and jump back toward the operator.
8. Kickback is the result of saw misuse and/
or incorrect operating procedures or
conditions and can be avoided by taking
proper precautions as given below.
a. Maintain a firm grip with both hands on the
and position your arms to resist kickback
forces. Position your body to either side of the
blade, but not In line with the blade. Kickback
could cause the saw to jump backwards,
but kickback forces can be controlled by the
operator , if proper precautions are taken.
Page 5For technical questions, please call 1-888-866-5797.Item 57672
SaFetyOperatiOnMaintenance Setup
9. When blade is binding, or when interrupting
a cut for any reason, release the trigger and
hold the saw motionless in the material until
the blade comes to a complete stop. never
attempt to remove the saw from the work or pull
the saw backward while the blade is in motion or
kickback may occur. Investigate and take corrective
actions to eliminate the cause of blade binding.
a. When restarting a saw in the workpiece,
centre the saw blade in the kerf so that the
saw teeth are not engaged into the material.
If a saw blade binds, it may walk up or kickback
from the workpiece as the saw is restarted.
10. Support large panels to minimise the risk of
blade pinching and kickback. Large panels tend
to sag under their own weight. Supports must
be placed under the panel on both sides, near
the line of cut and near the edge of the panel.
a. Do not use dull or damaged blades.
Unsharpened or improperly set blades
produce narrow kerf causing excessive
friction, blade binding and kickback.
b. Blade depth and bevel adjusting locking
levers must be tight and secure before
making the cut. If blade adjustment shifts while
cutting, it may cause binding and kickback.
c. use extra caution when sawing into existing
walls or other blind areas. The protruding
blade may cut objects that can cause kickback.
11. Lower guard function
a. check the lower guard for proper closing
before each use. Do not operate the saw if the
lower guard does not move freely and close
instantly. never clamp or tie the lower guard
into the open position. If the saw is accidentally
dropped, the lower guard may be bent. Raise the
lower guard with the retracting handle and make
sure it moves freely and does not touch the blade
or any other part, in all angles and depths of cut.
b. check the operation of the lower guard
spring. if the guard and the spring are
not operating properly, they must be
serviced before use. Lower guard may
operate sluggishly due to damaged parts,
gummy deposits, or a build-up of debris.
c. the lower guard may be retracted manually
only for special cuts such as “plunge cuts”
and “compound cuts”. raise the lower guard
by the retracting handle and as soon as the
blade enters the material, the lower guard
must be released. For all other sawing, the
lower guard should operate automatically.
d. always observe that the lower guard
is covering the blade before placing
the saw down on bench or floor. An
unprotected, coasting blade will cause the
saw to walk backwards, cutting whatever is
in its path. Be aware of the time it takes for
the blade to stop after switch is released.
12. riving knife function
a. use the appropriate saw blade for the riving
knife. For the riving knife to function, the body
of the blade must be thinner than the riving
knife and the cutting width of the blade must be
wider than the thickness of the riving knife.
b. adjust the riving knife as described in
this instruction manual. Incorrect spacing,
positioning and alignment can make the riving
knife ineffective in preventing kickback.
c. always use the riving knife except when
plunge cutting. The riving knife must be
replaced after plunge cutting. The riving
knife causes interference during plunge
cutting and can create kickback.
d. For the riving knife to work, it must
be engaged in the workpiece. The
riving knife is ineffective in preventing
kickback during short cuts.
e. Do not operate the saw if the riving
knife is bent. Even a light interference
can slow the closing rate of a guard.
13. Vibration Safety
This tool vibrates during use.
Repeated or long‑term exposure to vibration may
cause temporary or permanent physical injury,
particularly to the hands, arms and shoulders.
To reduce the risk of vibration‑related injury:
a. Anyone using vibrating tools regularly or for
an extended period should first be examined
by a doctor and then have regular medical
check‑ups to ensure medical problems are not
being caused or worsened from use. Pregnant
women or people who have impaired blood
circulation to the hand, past hand injuries,
nervous system disorders, diabetes, or
Raynaud’s Disease should not use this tool.
If you feel any symptoms related to
vibration (such as tingling, numbness,
and white or blue fingers), seek medical
advice as soon as possible.
b. Do not smoke during use. Nicotine reduces
the blood supply to the hands and fingers,
increasing the risk of vibration‑related injury.
c. Wear suitable gloves to reduce the
vibration effects on the user.
d. Use tools with the lowest vibration
when there is a choice.
e. Include vibration‑free periods each day of work.
f. Grip tool as lightly as possible (while still keeping
safe control of it). Let the tool do the work.
g. To reduce vibration, maintain the tool as
explained in this manual. If any abnormal
vibration occurs, stop use immediately.
Page 6 For technical questions, please call 1-888-866-5797. Item 57672
SaFety OperatiOn MaintenanceSetup
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.
Grounded tools: tools with three prong plugs
3-prong plug and Outlet
1. Tools marked with “Grounding Required” have
a three wire cord and three prong grounding
plug. The plug must be connected to a properly
grounded outlet. If the tool should electrically
malfunction or break down, grounding provides
a low resistance path to carry electricity away
from the user, reducing the risk of electric shock.
(See 3-prong plug and Outlet.)
2. The grounding prong in the plug is connected
through the green wire inside the cord to the
grounding system in the tool. The green wire
in the cord must be the only wire connected to
the tool’s grounding system and must never
be attached to an electrically “live” terminal.
(See 3-prong plug and Outlet.)
3. The tool must be plugged into an appropriate outlet,
properly installed and grounded in accordance
with all codes and ordinances. The plug and outlet
should look like those in the preceding illustration.
(See 3-prong plug and Outlet.)
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
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.)
Page 7For technical questions, please call 1-888-866-5797.Item 57672
SaFetyOperatiOnMaintenance Setup
5. If you are using one extension cord for more
than one tool, add the nameplate amperes
and use the sum to determine the required
minimum cord size. (See table a.)
6. If you are using an extension cord outdoors, make
sure it is marked with the suffix “W‑A” (“W” in
Canada) to indicate it is acceptable for outdoor use.
7. Make sure the extension cord is properly wired
and in good electrical condition. Always replace
a damaged extension cord or have it repaired
by a qualified electrician before using it.
8. Protect the extension cords from sharp objects,
excessive heat, and damp or wet areas.
taBLe a: recOMMenDeD MiniMuM Wire
GauGe FOr eXtenSiOn cOrDS* (120/240 VOLt)
naMepLate
aMpereS
(at full load)
eXtenSiOn cOrD
LenGtH
25´ 50´ 75´ 100´ 150´
0 – 2.0 18 18 18 18 16
2.1 – 3.4 18 18 18 16 14
3.5 – 5.0 18 18 16 14 12
5.1 – 7.0 18 16 14 12 12
7.1 – 12.0 18 14 12 10 ‑
12.1 – 16.0 14 12 10 ‑ ‑
16.1 – 20.0 12 10 ‑ ‑ ‑
* Based on limiting the line voltage drop to five volts at
150% of the rated amperes.
Symbology
Double Insulated
V
Volts
~
Alternating Current
a
Amperes
n
0
xxxx/min.
No Load Revolutions per Minute (RPM)
WARNING marking concerning Risk
of Eye Injury. Wear ANSI‑approved
safety goggles with side shields.
Read the manual before
set‑up and/or use.
WARNING marking
concerning Risk of Fire.
Do not cover ventilation ducts.
Keep flammable objects away.
WARNING marking concerning
Risk of Electric Shock.
Properly connect power cord
to appropriate outlet.
Page 8 For technical questions, please call 1-888-866-5797. Item 57672
SaFety OperatiOn MaintenanceSetup
Specifications
Electrical Rating 120VAC / 60Hz / 14A
No Load Speed n
0
: 5,200/min
Bevel Capacity 0° to 52°
Depth of Cut
2‑7/16″ @ 90°
1‑7/8″ @ 45°
Maximum Blade Diameter 7‑1/4″ (185mm)
Arbor 5/8″ (16mm) round
Page 9For technical questions, please call 1-888-866-5797.Item 57672
SaFetyOperatiOnMaintenance Setup
Setup - Before use:
read the entire iMpOrtant SaFety inFOrMatiOn section at the beginning of this
manual including all text under subheadings therein before set up or use of this product.
Functions
auxiliary
Handle
Fixed
Guard
Dust
port
Lower
Guard
Lever
Lower
Guard
Bevel
Lock
Knob
Bevel
Scale
Blade
(Sold Separately)
trigger
Depth
Scale
Handle
Depth
Lock Lever
Hex
Wrench
Spindle Lock
Page 10 For technical questions, please call 1-888-866-5797. Item 57672
SaFety OperatiOn MaintenanceSetup
Operating instructions
read the entire iMpOrtant SaFety inFOrMatiOn section at the beginning of this
manual including all text under subheadings therein before set up or use of this product.
tO preVent SeriOuS inJury FrOM acciDentaL OperatiOn:
Make sure that the trigger is in the off-position and unplug the tool from its
electrical outlet before performing any procedure in this section.
tool changing
tO preVent SeriOuS inJury FrOM FLyinG FraGMentS:
Do not use blades made from high-speed steel, abrasive blades, or metal- or masonry-cutting blades.
the guards of this saw are not designed to protect against the failure of such blades.
1. Hold in the Spindle Lock while removing
the Blade Bolt with included Hex Wrench,
turning it cOuntercLOcKWiSe.
Blade
Bolt
Outer
Flange
inner
Flange
Saw
Blade
2. Remove the Outer Flange.
3. Use the lever on the Lower Guard to
raise the Guard and remove the Blade.
Leave the inner flange in place.
4. Install the new blade, with the directional
arrow on the blade pointing the same as the
directional arrow on the Upper Guard.
5. Place the Outer Flange on the spindle,
chamfered side facing out.
6. Hold the Spindle Lock Button while using the Hex
Wrench to replace the Blade Bolt, turning clockwise.
Setting and testing
adjusting Depth
1. Set the Base flat against the edge of the workpiece.
2. Raise the Depth Lock Lever to allow
the depth of cut to be adjusted.
Depth Lock
Lever
Depth
Scale
3. Use the Depth Scale located behind the housing
to set depth of cut.
WarninG! to reduce the risk of serious injury,
adjust the depth of cut to just barely clear
the workpiece and remove shavings.
4. After adjustment, lower the Depth Lock Lever.
WarninG! tO preVent SeriOuS inJury:
tighten Depth Lock Knob before use.
Page 11For technical questions, please call 1-888-866-5797.Item 57672
SaFetyOperatiOnMaintenance Setup
adjusting Bevel
1. Loosen the Bevel Lock Knob to allow
the angle of cut to be adjusted.
Bevel
Scale
Bevel
Lock
Knob
2. Use the Bevel Scale to set the desired angle.
3. After adjustment, tighten the Bevel Lock Knob.
WarninG! tO preVent SeriOuS inJury:
tighten Bevel Lock Knob before use.
note: Bevel Stop at 45°.
Workpiece and Work area Set up
1. Workpiece selection:
a. Workpiece must be free of foreign
objects and loose knots.
b. Do not use to cut logs, tree limbs,
or uneven lumber.
c. Wet lumber, green (unseasoned) lumber,
and pressure treated lumber all have an
increased potential for kickback and should
only be cut with a blade designed for cutting
that lumber. Wear a NIOSH‑approved
respirator and have appropriate ventilation
whenever cutting pressure treated lumber.
2. 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.
3. 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.
4. Secure loose workpieces using a vise or clamps
(not included) to prevent movement while working.
5. There must not be objects, such as utility lines,
nearby that will present a hazard while working.
This is especially critical for plunge cuts.
Page 12 For technical questions, please call 1-888-866-5797. Item 57672
SaFety OperatiOn MaintenanceSetup
General instructions for use
1. Make sure that the Trigger is in the
off‑position, then plug in the tool.
2. Make sure that all guards are in place and in
proper working order and that all adjustment
knobs are tight before operation.
3. Firmly grip the Handle with one hand and the
Auxiliary Handle with the other hand. Squeeze
and hold the Trigger to turn on the Circular Saw.
4. Allow the saw blade to reach full speed before
feeding the saw blade into the workpiece.
5. Make straight cuts only. Do not attempt to twist
the Circular Saw to the right or left while cutting.
If this occurs, the saw blade will “bind” in the
workpiece causing kickback, potential injury, and/
or damage to the workpiece and Circular Saw.
6. Do not force the Circular Saw to cut faster
than it is designed to cut. Feed the saw
blade gradually into the workpiece.
7. Turn off the Circular Saw if the saw blade is to be
backed out of an uncompleted cut. When turning
off the Circular Saw, allow the saw blade to fully
stop on its own before removing the Circular Saw.
Do not press against the saw blade to stop it.
8. Once the cutting job is completed, release the
Trigger and wait until the saw blade stops spinning.
WarninG! tO preVent SeriOuS inJury:
The tool will restart automatically if stalled.
9. To prevent accidents, turn off the tool and
unplug it after use. Clean, then store the
tool indoors out of children’s reach.
Page 13For technical questions, please call 1-888-866-5797.Item 57672
SaFetyOperatiOnMaintenance Setup
Maintenance and Servicing instructions
procedures not specifically explained in this manual must
be performed only by a qualified technician.
tO preVent SeriOuS inJury FrOM acciDentaL OperatiOn:
Make sure that the trigger is in the off-position and unplug the tool from its
electrical outlet before performing any procedure in this section.
tO preVent SeriOuS inJury FrOM tOOL FaiLure:
Do not use damaged equipment. if abnormal noise or vibration
occurs, have the problem corrected before further use.
cleaning, Maintenance, and Lubrication
1. BeFOre eacH uSe, inspect the general
condition of the tool. Check for:
• loose hardware,
• misalignment or binding of moving parts,
• damaged cord/electrical wiring,
• cracked or broken parts, and
• any other condition that may
affect its safe operation.
2. aFter uSe, wipe external surfaces
of the tool with clean cloth.
3. tO cLean: Ventilation openings should be kept
clean and free of dirt and debris.
Wear ANSI‑approved safety goggles and
NIOSH‑approved dust mask/respirator before
cleaning ducts. Use compressed air to clean
ventilation openings. Outer body may be cleaned
with a clean cloth and a mild detergent. Do not use
solvents. Do not immerse the Circular Saw in liquid.
4. For blade changing instructions
see Tool Changing on page 10.
5. WarninG! tO preVent SeriOuS
inJury: if the plug or the supply cord of this
power tool is damaged, it must be replaced
only by a qualified service technician.
Page 14 For technical questions, please call 1-888-866-5797. Item 57672
SaFety OperatiOn MaintenanceSetup
troubleshooting
problem possible causes Likely Solutions
Tool will not start. 1. Cord not connected.
2. No power at outlet.
3. Tool’s thermal reset breaker
tripped (if equipped).
4. Internal damage or wear.
(Carbon brushes or
Trigger, for example.)
1. Check that cord is plugged in.
2. Check power at outlet. If outlet is unpowered,
turn off tool and check circuit breaker.
If breaker is tripped, make sure circuit is right
capacity for tool and circuit has no other loads.
3. Turn off tool and allow to cool.
Press reset button on tool.
4. Have technician service tool.
Tool operates slowly. 1. Forcing tool to work too fast.
2. Extension cord too long or cord
diameter too small.
1. Allow tool to work at its own rate.
2. Eliminate use of extension cord. If an extension
cord is needed, use one with the proper diameter
for its length and load. See Extension Cords
in Grounding section on page 6.
Performance
decreases over time.
1. Carbon brushes worn
or damaged.
2. Blade dull or damaged.
1. Replace brushes.
2. Keep blades sharp. Replace as needed.
Excessive noise
or rattling.
Internal damage or wear. (Carbon
brushes or bearings, for example.)
Have technician service tool.
Overheating. 1. Forcing tool to work too fast.
2. Blade misaligned.
3. Blade dull or damaged.
4. Blocked motor housing vents.
5. Motor being strained by long or
small diameter extension cord.
1. Allow tool to work at its own rate.
2. Check and correct blade alignment.
3. Keep blades 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 section on page 6.
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 57672
SaFetyOperatiOnMaintenance Setup
record product’s Serial number Here:
note: if product has no serial number, record month and year of purchase instead.
note: Reference UPC 193175420893.
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.
