Harbor Freight Tools Hercules HC104B User manual

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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 57145.
Owner’s Manual &
Safety Instructions
6),

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IMPORTANT SAFETY INFORMATION
GENERAL POWER TOOL SAFETY WARNINGS
=$,#0,%%0C,Y$-/0J,.1913C0,1#0,%%091C-.DO-9"1CL00
Failure to follow the warnings and instructions may
result in electric shock, fire and/or serious injury.
4,B$0,%%0J,.1913C0,1#091C-.DO-9"1C0
Y".0YD-D.$0.$Y$.$1O$L
The term ″power tool″ in the warnings refers to
your battery-operated (cordless) power tool.
Work Area Safety
1. Z$$50J".[0,.$,0O%$,10,1#0J$%%0%9-L00
Cluttered or dark areas invite accidents.
2. \"01"-0"5$.,-$05"J$.0-""%C0910$]5%"C9B$0
,-H"C52$.$CF0CDO20,C0910-2$05.$C$1O$0"Y0
Y%,HH,^%$0%9PD9#CF03,C$C0".0#DC-L Power tools
create sparks which may ignite the dust or fumes.
3. Z$$50O29%#.$10,1#0^/C-,1#$.C0
,J,/0J29%$0"5$.,-9130,05"J$.0-""%L
Distractions can cause you to lose control.
Electrical Safety
\"01"-0$]5"C$05"J$.0-""%C0-"0.,910".0J$-0O"1#9-9"1CL
Water entering a power tool will increase
the risk of electric shock.
Personal Safety
1. 4-,/0,%$.-F0J,-O20J2,-0/"D0,.$0#"9130,1#0DC$0
O"HH"10C$1C$0J2$10"5$.,-9130,05"J$.0-""%L00
\"01"-0DC$0,05"J$.0-""%0J29%$0/"D0,.$0-9.$#0
".0D1#$.0-2$091Y%D$1O$0"Y0#.D3CF0,%O"2"%0".0
H$#9O,-9"1L A moment of inattention while operating
power tools may result in serious personal injury.
2. GC$05$.C"1,%05."-$O-9B$0$PD95H$1-L00<%J,/C0J$,.0
$/$05."-$O-9"1L Protective equipment such
as dust mask, non-skid safety shoes, hard hat,
or hearing protection used for appropriate
conditions will reduce personal injuries.
3. X.$B$1-0D191-$1-9"1,%0C-,.-913L0M1CD.$0-2$04J9-O20
9C0910-2$0"YYQ5"C9-9"10^$Y".$0O"11$O-9130-"0
5"J$.0C"D.O$F059O[9130D50".0O,../9130-2$0-""%L
Carrying power tools with your finger on
the Switch or energizing power tools that
have the Switch on invites accidents.
4. \"01"-0"B$..$,O2L00Z$$505."5$.0Y""-9130,1#0
^,%,1O$0,-0,%%0-9H$CL This enables better control
of the power tool in unexpected situations.
5. \.$CC05."5$.%/L00\"01"-0J$,.0%""C$0O%"-29130".0
E$J$%./L00Z$$50/"D.02,9.F0O%"-29130,1#03%"B$C0
,J,/0Y."H0H"B91305,.-CL Loose clothes, jewelry
or long hair can be caught in moving parts.
6. ?Y0#$B9O$C0,.$05."B9#$#0Y".0-2$0O"11$O-9"10"Y0
#DC-0$]-.,O-9"10,1#0O"%%$O-9"10Y,O9%9-9$CF0$1CD.$0
-2$C$0,.$0O"11$O-$#0,1#05."5$.%/0DC$#L Use of
dust collection can reduce dust-related hazards.
7. I1%/0DC$0C,Y$-/0$PD95H$1-0-2,-02,C0^$$10
,55."B$#0^/0,10,55."5.9,-$0C-,1#,.#C0,3$1O/L
Unapproved safety equipment may not provide
adequate protection. Eye protection must be
ANSI-approved and breathing protection
must be NIOSH-approved for the
specific hazards in the work area.
Power Tool Use and Care
1. \"01"-0Y".O$0-2$05"J$.0-""%L00GC$0-2$0
O"..$O-05"J$.0-""%0Y".0/"D.0,55%9O,-9"1L
The correct power tool will do the job better and
safer at the rate for which it was designed.
2. \"01"-0DC$0-2$05"J$.0-""%09Y0-2$04J9-O200
#"$C01"-0-D.109-0"10,1#0"YYL
Any power tool that cannot be controlled with the
Switch is dangerous and must be repaired.
3. \9CO"11$O-0-2$0^,--$./05,O[0Y."H0-2$0
5"J$.0-""%0^$Y".$0H,[9130,1/0,#EDC-H$1-CF0
O2,139130,OO$CC".9$CF0".0C-".91305"J$.0
-""%CL Such preventive safety measures reduce
the risk of starting the power tool accidentally.
4. 4-".$09#%$05"J$.0-""%C0"D-0"Y0-2$0.$,O20"Y0
O29%#.$10,1#0#"01"-0,%%"J05$.C"1C0D1Y,H9%9,.0
J9-20-2$05"J$.0-""%0".0-2$C$091C-.DO-9"1C0
-"0"5$.,-$0-2$05"J$.0-""%L Power tools are
dangerous in the hands of untrained users.
5. !,91-,9105"J$.0-""%CL00'2$O[0Y".0H9C,%931H$1-0
".0^91#9130"Y0H"B91305,.-CF0^.$,[,3$0"Y05,.-C0
,1#0,1/0"-2$.0O"1#9-9"10-2,-0H,/0,YY$O-0-2$0
5"J$.0-""%KC0"5$.,-9"1L00?Y0#,H,3$#F02,B$0-2$0
5"J$.0-""%0.$5,9.$#0^$Y".$0DC$L Many accidents
are caused by poorly maintained power tools.
6. Z$$50OD--9130-""%C0C2,.50,1#0O%$,1L Properly
maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.

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7. GC$0-2$05"J$.0-""%F0,OO$CC".9$C0,1#0-""%0^9-C0
$-OL0910,OO".#,1O$0J9-20-2$C$091C-.DO-9"1CF0
-,[913091-"0,OO"D1-0-2$0J".[9130O"1#9-9"1C0
,1#0-2$0J".[0-"0^$05$.Y".H$#L Use of the
power tool for operations different from those
intended could result in a hazardous situation.
Battery Tool Use and Care
1. =$O2,.3$0"1%/0J9-20-2$0O2,.3$.0C5$O9Y9$#0^/0
-2$0H,1DY,O-D.$.L A charger that is suitable
for one type of battery pack may create a risk
of fire when used with another battery pack.
2. GC$05"J$.0-""%C0"1%/0J9-20C5$O9Y9O,%%/0
#$C931,-$#0^,--$./05,O[CL Use of any other
battery packs may create a risk of injury and fire.
3. ;2$10^,--$./05,O[09C01"-0910DC$F0[$$509-0,J,/0
Y."H0"-2$.0H$-,%0"^E$O-CF0%9[$05,5$.0O%95CF0
O"91CF0[$/CF01,9%CF0CO.$JC0".0"-2$.0CH,%%0H$-,%0
"^E$O-CF0-2,-0O,10H,[$0,0O"11$O-9"10Y."H0
"1$0-$.H91,%0-"0,1"-2$.L0Shorting the battery
terminals together may cause burns or a fire.
4. G1#$.0,^DC9B$0O"1#9-9"1CF0%9PD9#0H,/0^$0
$E$O-$#0Y."H0-2$0^,--$./_0,B"9#0O"1-,O-L0
?Y0O"1-,O-0,OO9#$1-,%%/0"OOD.CF0Y%DC20J9-20J,-$.L0
?Y0%9PD9#0O"1-,O-C0$/$CF0,##9-9"1,%%/0C$$[0
H$#9O,%02$%5L0Liquid ejected from the
battery may cause irritation or burns.
Service
&,B$0/"D.05"J$.0-""%0C$.B9O$#0^/0,0PD,%9Y9$#0.$5,9.0
5$.C"10DC9130"1%/09#$1-9O,%0.$5%,O$H$1-05,.-CL0
This will ensure that the safety of the
power tool is maintained.
Flashlight Safety Warnings
1. \"01"-0C291$0#9.$O-%/091-"0$/$C0
"Y05$"5%$0".0,19H,%CL
2. >"-0,0-"/_0[$$50,J,/0Y."H0O29%#.$1L
3. Maintain labels and nameplates on the tool.
These carry important safety information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
4. Avoid unintentional starting.
Prepare to begin work before turning on the tool.
5. Do not leave the tool unattended when the
Battery Pack is connected. Turn off the tool,
and remove the Battery Pack before leaving.
6. The battery Charger gets hot during use.
The Charger’s heat can build up to
unsafe levels and create a fire hazard if it
does not receive adequate
ventilation, due to an electrical fault, or if it is used in
a hot environment.
Do not place the Charger on a flammable surface.
Do not obstruct any vents on the Charger.
MC5$O9,%%/0,B"9#05%,O9130-2$0'2,.3$.0"10O,.5$-C0
,1#0.D3C_0-2$/0,.$01"-0"1%/0Y%,HH,^%$F0^D-0-2$/0
,%C"0"^C-.DO-0B$1-C0D1#$.0-2$0'2,.3$.L0
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.
7. This product is not a toy.
Keep it out of reach of children.
8. 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.
Lithium Battery Safety Warnings
1. Lithium batteries store a large amount of energy and
will vent fire or explode if mistreated:
2. Keep Battery Pack dry.
3. DO NOT DO ANY OF THE FOLLOWING
TO THE BATTERY PACK:
• I5$1F
• \."5F
• 42".-QO9.OD9-F
• XD1O-D.$F
• ?1O91$.,-$F0".
• M]5"C$0-"0-$H5$.,-D.$C03.$,-$.0-2,106ST`NL
4. Charge Battery Pack only according
to its Charger’s instructions.
5. Inspect Battery Pack before every use;
do not use or charge if damaged.
04<7M08&M4M0
?>48=G'8?I>4L

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GROUNDING
8I0X=M7M>80M:M'8=?'04&I'Z0<>\0
\M<8&0N=I!0?>'I==M'80@=IG>\?>@A0
'2$O[0J9-20,0PD,%9Y9$#0$%$O-.9O9,109Y0/"D0
,.$0910#"D^-0,C0-"0J2$-2$.0-2$0"D-%$-09C0
5."5$.%/03."D1#$#L00\"01"-0H"#9Y/0-2$05"J$.0O".#0
5%D305."B9#$#0J9-20-2$0O2,.3$.L00\"01"-0DC$0-2$0
O2,.3$.09Y0-2$05"J$.0O".#0".05%D309C0#,H,3$#L00
?Y0#,H,3$#F02,B$09-0.$5,9.$#0^/0,0C$.B9O$0Y,O9%9-/0
^$Y".$0DC$L00?Y0-2$05%D30J9%%01"-0Y9-0-2$0"D-%$-F0
2,B$0,05."5$.0"D-%$-091C-,%%$#0^/0,0
PD,%9Y9$#0$%$O-.9O9,1L
Extension Cords
>"-$A Extension cords must not be
used with this item’s Charger.
Symbology
Double Insulated
7Volts
aAlternating Current
<Amperes
n0 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 Charger
ventilation ducts.
Charge on fireproof surface only.
WARNING marking concerning
Risk of Electric Shock.
Properly connect Charger’s power
cord to appropriate outlet.
WARNING marking concerning
Risk of Explosion.
Do not puncture, short, or open
battery packs and do not charge
damaged battery packs.
Warning Symbols and Definitions
0829C09C0-2$0C,Y$-/0,%$.-0C/H^"%L00?-09C0DC$#0-"0
,%$.-0/"D0-"05"-$1-9,%05$.C"1,%091ED./02,b,.#CL00
I^$/0,%%0C,Y$-/0H$CC,3$C0-2,-0Y"%%"J0-29C0C/H^"%0-"0
,B"9#05"CC9^%$091ED./0".0#$,-2L
?1#9O,-$C0,02,b,.#"DC0
C9-D,-9"10J29O2F09Y01"-0
,B"9#$#F0J9%%0.$CD%-0910#$,-20".0C$.9"DC091ED./L
?1#9O,-$C0,02,b,.#"DC0
C9-D,-9"10J29O2F09Y01"-0
,B"9#$#F0O"D%#0.$CD%-0910#$,-20".0C$.9"DC091ED./L
?1#9O,-$C0,02,b,.#"DC0
C9-D,-9"10J29O2F09Y01"-0
,B"9#$#F0O"D%#0.$CD%-0910H91".0".0H"#$.,-$091ED./L
<##.$CC$C05.,O-9O$C01"-0
.$%,-$#0-"05$.C"1,%091ED./L
SPECIFICATIONS
Battery Hercules 20 V Li-ion (sold separately)
Charger Hercules 20V Li-Ion (sold separately)
SETUP - BEFORE USE:
0 =$,#0-2$0M>8?=M0?!XI=8<>80
4<NM8W0?>NI=!<8?I>0C$O-9"10,-0-2$0
^$39119130"Y0-29C0H,1D,%091O%D#9130
,%%0-$]-0D1#$.0CD^2$,#913C0-2$.$910
^$Y".$0C$-0D50".0DC$0"Y0-29C05."#DO-L

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4<NM8WIXM=<8?I>!<?>8M><>'M 4M8GX
Functions
(
6
c
T
*
1. LED Panel
2. Hook
3. Rotating Head
4. Power Switch
5. Handle
6. Battery Pack
(sold separately)
7. Wrist Strap
S
U
OPERATING INSTRUCTIONS
0 =$,#0-2$0M>8?=M0?!XI=8<>80
4<NM8W0?>NI=!<8?I>0C$O-9"10,-0-2$0
^$39119130"Y0-29C0H,1D,%091O%D#9130
,%%0-$]-0D1#$.0CD^2$,#913C0-2$.$910
^$Y".$0C$-0D50".0DC$0"Y0-29C05."#DO-L
Tool Set Up
8I0X=M7M>804M=?IG40?>dG=W0N=I!0
<''?\M>8<:0IXM=<8?I>A0
!,[$0CD.$0-2,-0-2$04J9-O209C0910-2$0"YYQ5"C9-9"10
,1#0.$H"B$09-C0+,--$./0X,O[0^$Y".$0
5$.Y".H9130,1/05."O$#D.$0910-29C0C$O-9"1L
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 objects, such as utility lines,
nearby that will present a hazard while working.
Charging
Charge battery before using this tool. Follow
instructions included with battery charger.
Battery pack and charger sold separately.
General Operating Instructions
1. Insert fully charged Battery Pack into the Light,
making sure it clicks into place securely.
2. Adjust the Rotating Head’s position by adjusting
it up or down and twisted side to side to click
in place at any of the locking positions.
3. The Hook may be used to hang the Light, if desired.
To access, grasp the Hook and pull up. Return
the Hook to its holding place when not in use.
4. The Wrist Strap may be used to
carry the Light, if desired.
5. Press Power Switch once for full light
output. Press again for less light output.
Press a third time to turn light off.
6. Turn off Light and remove Battery Pack
after use. Clean, then store the tool
indoors out of children’s reach.

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4<NM8W IXM=<8?I> !<?>8M><>'M4M8GX
MAINTENANCE AND SERVICING
0X."O$#D.$C01"-0C5$O9Y9O,%%/0$]5%,91$#0
910-29C0H,1D,%0HDC-0^$05$.Y".H$#0
"1%/0^/0,0PD,%9Y9$#0-$O219O9,1L
8I0X=M7M>804M=?IG40?>dG=W0N=I!0
<''?\M>8<:0IXM=<8?I>A0
!,[$0CD.$0-2,-0-2$04J9-O209C0910-2$0"YYQ5"C9-9"10
,1#0.$H"B$09-C0+,--$./0X,O[0^$Y".$0
5$.Y".H9130,1/05."O$#D.$0910-29C0C$O-9"1L
8I0X=M7M>804M=?IG40?>dG=W0N=I!08II:0
N<?:G=MA0
\"01"-0DC$0#,H,3$#0$PD95H$1-L00
?Y0,^1".H,%01"9C$0".0B9^.,-9"10"OOD.CF02,B$0
-2$05."^%$H0O"..$O-$#0^$Y".$0YD.-2$.0DC$L
Cleaning, Maintenance,
and Lubrication
1. +MNI=M0M<'&0G4MF inspect the general
condition of the tool. Check for:
• leaking, swollen, or cracked battery pack,
• loose hardware,
• misalignment or binding of moving parts,
• cracked or broken parts, and
• any other condition that may
affect its safe operation.
2. <N8M=0G4MF wipe external surfaces
of the tool with clean cloth.
3. Disconnect battery pack and store battery pack,
charger, and tool in dry, indoor area out of
reach of children and away from metal objects
(i.e., paperclips, coins) to prevent shorting.
TROUBLESHOOTING
X."^%$H X"CC9^%$0',DC$C :9[$%/04"%D-9"1C
Light will not turn on. 1. Battery Pack not properly
connected.
2. Battery Pack not properly
charged.
3. Battery Pack burnt-out.
4. Internal damage or wear.
1. Remove Battery Pack, make sure there are no
obstructions, reinsert the Battery Pack according
to its shape (it should only fit one way), and press
firmly until the Battery Pack locks in place.
2. Make sure Charger is connected and
operating properly. Give enough time for
Battery Pack to recharge properly.
3. Dispose of old Battery Pack properly or recycle.
Replace Battery Pack.
4. Have technician service tool.
0 N"%%"J0,%%0C,Y$-/05.$O,D-9"1C0J2$1$B$.0#9,31"C9130".0C$.B9O9130-2$0-""%L000
\9CO"11$O-0+,--$./0X,O[0,1#0'2,.3$.05"J$.0CD55%/0^$Y".$0C$.B9O$L
=$O".#0X."#DO-KC04$.9,%0>DH^$.0&$.$A0
>"-$A0?Y05."#DO-02,C01"0C$.9,%01DH^$.F0.$O".#0H"1-20,1#0/$,.0"Y05D.O2,C$091C-$,#L
>"-$A Some parts are listed and shown for illustration purposes only,
and are not available individually as replacement parts.
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.

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4<NM8WIXM=<8?I>!<?>8M><>'M 4M8GX
PARTS LIST AND DIAGRAM
X,.- \$CO.95-9"1 e-/
1 Handle, Left Side 1
2 Handle, Right Side 1
3 Rotating Head, Left Side 1
4 Rotating Head, Right Side 1
5 Left Cover for Rotating Head 1
6 Right Cover for Rotating Head 1
7 Housing Back Cover 1
8 Housing Front Cover 1
9 Lens Cover 1
10 Transparent Lens 1
11 Ball Pin 2
12 Ring 1
13 Contact Head 1
X,.- \$CO.95-9"1 e-/
14 Power Switch Cap 1
15 Switch Support 1
16 Hook 1
17 Spring 2
18 O-Ring 1
19 Contact Plate 1
20 Screw, 2.6 x 6 6
21 Screw, 2.6 x 6 4
22 Screw, 3.0 x 12 11
23 PCBA 1
24 LED Panel 1
25 Wrist Strap 1
26 Clip 1
27 Battery Pack (sold separately) 1
22
22
2
27
19
1
26
25
23
20
3
17
5
11
20
15
14
21
11
17
4
6
8
10
21
12
13
24
9
21 16
18
720

6ST*(0<3"D.,0=",#00f00',%,^,C,CF0'<0V(c)600f00(QRRRQRSSQTUVU
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.