


Owner’s Manual &
Safety Instructions

WARNING:        
.
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 64984.
Page 2  Item 64984
IMPORTANT SAFETY INFORMATION
General Power Tool Safety Warnings


Failure to follow all instructions listed below may r
esult in electric shock, fire and/or serious injury.


The term “power tool” in the warnings refers
to your mains-operated (corded) power tool or
battery-operated (cordless) power tool.
1. 
a. 
Cluttered or dark areas invite accidents.
b. 

Power tools
create sparks which may ignite the dust or fumes.
c. 
Distractions
can cause you to lose control.
2. 
a. 


Unmodified plugs and matching
outlets will reduce risk of electric shock.
b. 

There is an increased risk of
electric shock if your body is earthed or grounded.
c. 
Water entering a power tool
will increase the risk of electric shock.
d. 


Damaged or entangled
cords increase the risk of electric shock.
e. 

Use of a cord suitable for outdoor
use reduces the risk of electric shock.
f. 

Use of
a GFCI reduces the risk of electric shock.
3. 
a. 



A moment
of inattention while operating power tools
may result in serious personal injury.
b. 
Protective equipment
such as dust mask, non-skid safety shoes, hard
hat, or hearing protection used for appropriate
conditions will reduce personal injuries.
c. 


Carrying power tools
with your finger on the switch or energizing power
tools that have the switch on invites accidents.
d. 
A wrench
or a key left attached to a rotating part of the
power tool may result in personal injury.
e. 
 This enables better control
of the power tool in unexpected situations.
f. 

Loose clothes, jewelry
or long hair can be caught in moving parts.
g. 

Use of
dust collection can reduce dust-related hazards.
h. 


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.
Page 3Item 64984
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 the
Battery Pack is connected. Turn off the
tool, and unplug it from its electrical outlet
remove the Battery Pack 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. 
a. 
The correct
power tool will do the job better and safer
at the rate for which it was designed.
b. 
Any power
tool that cannot be controlled with the switch
is dangerous and must be repaired.
c. 




Such preventive safety measures reduce the
risk of starting the power tool accidentally.
d. 


Power tools are
dangerous in the hands of untrained users.
e. 




Many accidents are
caused by poorly maintained power tools.
f. Properly
maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
g. 


Use of the
power tool for operations different from those
intended could result in a hazardous situation.
h. 

Slippery handles and grasping surfaces
do not allow for safe handling and control
of the tool in unexpected situations.
5. 
a. 

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. 

a. 


 If both hands are holding
the saw, they cannot be cut by the blade.
b. 
The guard cannot protect you from
the blade below the workpiece.
c. 
Less than a full tooth of the blade
teeth should be visible below the workpiece.
d. 

 It is important
to support the work properly to minimise body
exposure, blade binding, or loss of control.
e. 


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. 
This improves the accuracy
of cut and reduces the chance of blade binding.
Page 4  Item 64984
g. 
Blades
that do not match the mounting hardware of the
saw will run off-center, causing loss of control.
h. 
The blade washers and
bolt were specially designed for your saw, for
optimum performance and safety of operation.
7. 
- 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.
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. 



Kickback could cause the saw to jump backwards,
but kickback forces can be controlled by the
operator, if proper precautions are taken.
b. 






 Investigate and take corrective actions
to eliminate the cause of blade binding.
c. 


If a saw blade binds, it may walk up or kickback
from the workpiece as the saw is restarted.
d. 
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.
e. 
Unsharpened or improperly set blades
produce narrow kerf causing excessive
friction, blade binding and kickback.
f. 

If blade adjustment shifts while
cutting, it may cause binding and kickback.
g. 
The protruding
blade may cut objects that can cause kickback.
8. 
a. 



 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. 


 Lower guard may
operate sluggishly due to damaged parts,
gummy deposits, or a build-up of debris.
c. 




 For all other sawing, the
lower guard should operate automatically.
d. 

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.
9. 
a. 
 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. 
 Incorrect spacing,
positioning and alignment can make the riving
knife ineffective in preventing kickback.
c. 
 The riving knife must be
replaced after plunge cutting. The riving
knife causes interference during plunge
cutting and can create kickback.
d. 
 The riving knife is ineffective
in preventing kickback during short cuts.
e. 
 Even a light interference
can slow the closing rate of a guard.
Page 5Item 64984
10. 
a. Ensure the
switch is in the off-position before connecting
to battery pack, picking up or carrying the
power tool. Carrying the power tool with your
finger on the switch or energizing power tool
that have the switch on invites accidents.
b. 


Such preventive safety measures reduce the
risk of starting the power tool accidentally.
c. 
A charger that is suitable
for one type of battery pack may create a risk
of fire when used with another battery pack.
d. 
Use of any other
battery packs may create a risk of injury and fire.
e. 



Shorting the battery
terminals together may cause burns or a fire.
f. 

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.
g. 
Damaged or modified
batteries may exhibit unpredictable behavior
resulting in fire, explosion or risk of injury.
h. 
Exposure to fire
or temperature above 265°F may cause explosion.
i. 


Charging improperly or at
temperatures outside of the specified range may
damage the battery and increase the risk of fire.
j. 

This will ensure that
the safety of the product is maintained.
k. 


l. 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. 


Place the Charger on a
stable, solid, nonflammable surface (such as a
stable metal workbench or concrete floor) at least
1 foot away from all flammable objects, such as
drapes or walls. Keep a fire extinguisher and a
smoke detector in the area. Frequently monitor
the Charger and Battery Pack while charging.
m. 

11. 




a. 
B. 

 
 
 
 
 
 
c. Charge Battery Pack only according
to its Charger’s instructions.
d. Inspect Battery Pack before every use;
do not use or charge if damaged.
12. 
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.
Page 6  Item 64984
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.
Grounding Instructions
Extension cords must not be used with this
item’s Charger.
Warning Symbols and Definitions















Symbology
Volts
Direct 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.
Keep hands clear of fence area.
DANGER marking concerning
Risk of Amputation.
Keep hands well clear of cutting area.
Charge on fireproof surface only.
SPECIFICATIONS
Battery Type 20V Li-Ion Hercules Battery
Spindle No Load Speed 5,000 RPM
Max. Accessory Diameter
6-1/2"
Arbor 5/8" Round
Max. Depth of Cut 
Page 7Item 64984
FUNCTIONAL DESCRIPTION





















Page 8  Item 64984
OPERATION








Tool Set Up




 For additional information regarding the
parts listed in the following pages, refer to the
Assembly Diagram near the end of this manual.

1. Push and hold Spindle Lock, located above
Upper Guard, to keep Spindle from rotating.
2. Use the included hex key to loosen () and
remove Saw Blade Bolt. Remove Outer Flange.
3. Use the Lower Guard Lever to pull Lower Guard
all the way up into Upper Guard. While holding
Lower Guard in upward position, remove old
blade if needed and install new Saw Blade.
WARNING!
Blade must be rated to at least 5,000 RPM.
 Install the new Saw Blade with its
teeth and its arrow pointing in the same
direction as the Lower Guard’s arrow.
4. Replace Outer Flange on Spindle with the
cupped side towards the blade, then tighten the
Blade Bolt by turning .

1. Align mounting hole on Dust Chute with threaded
hole on the Saw Base behind the Upper Guard.
2. Insert mounting screw into hole and tighten securely.

1. Push the Depth Gauge Lever down to unlock.
2. Hold Base Plate down with one hand and
raise or lower Saw with the other hand until
the Blade is at the desired depth of cut,
using the Depth Gauge as a guide.
3. Pull Depth Gauge Lever up to lock.
WARNING! To reduce the risk of Serious Injury:
Depth of cut must be adjusted to just clear the workpiece.

1. Loosen Angle Gauge Lock Knob.
2. Adjust Base Plate to desired angle between
0 and 50, using the Angle Gauge as a guide.
3. Tighten Angle Gauge Lock Knob.
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. Secure loose workpieces using a vise or clamps
(not included) to prevent movement while working.
4. Verify that there are no utility lines or
hardware in or near the workpiece.
This is especially critical for plunge cuts.
5. Connect a dust collection system
(sold separately) to the Dust Chute.
Charging
Refer to Hercules charger manual for instructions on how
to properly charge a Hercules battery (sold separately).
General Operation
1. Make all necessary adjustments to the Circular Saw.
2. Make sure that all guards are in place in
proper working order and that all adjustment
knobs are tight before operation.
3. Connect a 20V Hercules battery (sold
separately) to back of handle.
4. Firmly grip the Main Handle with one hand and
the Auxiliary Handle with the other hand.
5. Press and hold Trigger Lock, then the
Trigger to turn on the Circular Saw.
6. Release Trigger Lock.
7. Allow the Saw Blade to reach full speed before
feeding Saw Blade into the workpiece.
8. Make straight cuts only. DO NOT twist Saw 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.
9. Do not force the Circular Saw to cut faster
than it is designed to cut. Feed the Saw
Blade gradually into the workpiece.
10. Release Trigger if the Saw Blade is to be backed
out of an uncompleted cut. Wait until the Saw
Blade stops spinning before removing the Saw.
Do not press against the Saw Blade to stop it.
11. Once the cutting job is completed, release the
Trigger and wait until the Saw Blade stops spinning.
Page 9Item 64984
12. Disconnect battery by pressing down on release
button and removing from back of handle.
13. Clean, then store the tool indoors
out of children’s reach.
MAINTENANCE AND SERVICING












Cleaning, Maintenance,
and Lubrication
1.  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
• damaged electrical wiring
• any other condition that may
affect its safe operation.
2.  wipe external surfaces
of the tool with clean cloth.
3. Li-Ion BATTERY MUST BE RECYCLED OR
DISPOSED OF PROPERLY.
Do not short, incinerate or open battery.
4. 



5. For making accurate cuts, the Saw Blade must
be adjusted to be exactly vertical to the Table.
If adjustment is necessary, have the Miter Saw
serviced by a qualified service technician.
Troubleshooting
  
Tool will not start. 1. No power at outlet.
2. Cord not connected.
1. Check power at outlet.
2. Check that cord is plugged in.
Tool operates
sporadically or
at low power.
1. Low power supply or
improper extension cords.
2. Worn or cracked
Carbon Brushes.
1. Check power supply and power cords.
2. Check Carbon Brushes. Replace if damaged or worn.
Wood burns at
ends when cut.
1. Dirty Blade.
2. Material is binding.
1. Clean Blade using blade cleaner or mineral spirits.
2. Check position of work material on Table. Material must
be flat, flush against Fence and supported on ends.
Material frays
or chips out.
1. Finished side is down.
2. Blade chipped or dull.
3. Blade inappropriate for material.
4. Material is unsupported.
1. Keep finished side of material up or facing operator.
Bottom and back side are prone to chip out.
2. Check for damaged teeth. Sharpen or replace blade.
3. Check blade manufacturer’s recommendations for
material being cut. For cross cutting hard wood and for
precision cuts use a thin kerf blade with 60 or more teeth.
4. 
plywood, underneath or behind the material to support
the edges of the material as it is being cut.
Blade binds, slowing
or stopping saw.
1. Material is misaligned on the
saw or ends are not supported.
2. Material is wet, contaminated or
inappropriate blade is being used.
1. Material must be flat on table, flush against
the fence and supported on both ends.
2. Check condition of material and check
compatibility of blade to material.
Blade does not
cut completely
through workpiece.
1. Depth Stop setting in use.
2. Depth Stop set too shallow.
1. Swing Depth Stop up to its vertical position to disengage.
2. Adjust Depth Adjustment Bolt for desired depth of cut.
Motor runs but
blade does not turn.
Drive belt has failed. Have qualified technician service tool.


Page 10  Item 64984
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 AND DIAGRAM
Parts List
  
1 Pan Head Self-Tapping Screw 8
2 Cover Cap 1
3 Socket Pan Head Triplex Screw 4
4 Housing 1
5 Brush Component 1
6 Rubber Column 1
7 Cross Pan Head Screw 2
8 Deep Groove Ball Bearing 1
9 Rotor 1
10 Deep Groove Ball Bearing 2
11 Stator 1
12 Pan Head Screw 5
13 Trigger 1
14 Windshield 1
15 Screw 1
16 Washer 1
17 Screw 1
18 Right Handle 1
19 Spacer 1
20 Bracket 1
21 Compression Spring 1
22 Self-Tapping Screw 2
23 Fixing Sleeve 1
24 Elastic Cylindrical Pin 2
25 Hook 1
26 Baseboard 1
27 Guide Plate 1
28 Flat Washer 2
29 Thin Head Semi-Tubular Rivet 1
30 Left Handle 1
31 Gear Box 1
32 Seal Ring 1
33 Compression Spring 1
34 Lockpin 1
35 Button 1
36 Shaft Sleeve 1
37 Flange Head-Tapping Screw 1
38 Electronic Component 1
39 Inner Socket-Tapping Screw 1
40 Hex Socket Set Screw 2
  
41 Guide Plate 1
42 Oval Head Semi-Tubular Rivet 1
43 Knob Component 1
44 Flat Washer 1
45 Guide Ruler 1
46 Cross Countersunk Screw 4
47 Spring 1
48 Knob Component 1
49 Screw 1
50 Guide Ruler 1
51 Wrench 1
52 Cylindrical Pin 1
53 Button 1
54 Reverse Lock Button Spring 1
55 Shield 1
56 Cover Cap 1
57 Spring Pin 1
58 Absorber 1
59 Socket Screw 1
60 Circlip 1
61 Gear 1
62 Circlip For Hole 1
63 Wave Washer 1
64 Output Shaft 1
65 Oil Seal 1
66 End Cover 1
67 Socket Countersunk Head Screw 8
68 Inner Flange 1
69 Outer Flange 1
70 Saw Blade Bolt 1
71 Torsion Spring 1
72 Shield 1
73 Stop Collar 1
74 Guard Handle 1
75 Socket Pan Head Screw 2
76 Compound Slot Pan Head Screw 1
77 Dust Chute 1
78 Blade 1
79 Hex Key (Not Shown) 1
Page 11Item 64984
Assembly Diagram

 If product has no serial number, record month and year of purchase instead.
 Some parts are listed and shown for illustration purposes only,
and are not available individually as replacement parts.




Copyright
©
2018 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.
LIMITED 90 DAYS 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.