Hercules HCE33 Assembly instructions

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589::
Owner’s Manual &
Safety Instructions
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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 56846

Page 2 N16#3/OP42O*$#QD/C3214CF#.$/*C/#O*$$#!(RRR(RSS(TUVUK Item 56846
IMPORTANT SAFETY INFORMATION
GENERAL POWER TOOL SAFETY WARNINGS
=/*7#*$$#C*W/3-#I*6424XC#*47#*$$#24C36DO3214CK##
Failure to follow the warnings and instructions may result
in electric shock, fire and/or serious injury.
&*B/#*$$#I*6424XC#*47#24C36DO3214C#
W16#WD3D6/#6/W/6/4O/K#

your 
Work area safety
1. Y//.#I16Z#*6/*#O$/*4#*47#I/$$#$23K##
Cluttered or dark areas invite accidents.
2. '1#413#1./6*3/#.1I/6#311$C#24#/+.$1C2B/#
*301C.P/6/CF#CDOP#*C#24#3P/#.6/C/4O/#1W#
W$*00*%$/#$2QD27CF#X*C/C#16#7DC3K Power tools

3. Y//.#OP2$76/4#*47#%-C3*47/6C#
*I*-#IP2$/#1./6*324X#*#.1I/6#311$K
Distractions can cause you to lose control.
Electrical safety
1. [1I/6#311$#.$DXC#0DC3#0*3OP#3P/#1D3$/3K##
>/B/6#0172W-#3P/#.$DX#24#*4-#I*-K##
'1#413#DC/#*4-#*7*.3/6#.$DXC#I23P#X61D47/7#
.1I/6#311$CK
outlets will reduce risk of electric shock.
2. <B127#%17-#O143*O3#I23P#X61D47/7#CD6W*O/C#
CDOP#*C#.2./CF#6*72*316CF#6*4X/C#*47#
6/W62X/6*316CK# There is an increased risk of
electric shock if your body is grounded.
3. '1#413#/+.1C/#.1I/6#311$C#31#6*24#16#I/3#
O14723214CK
will increase the risk of electric shock.
4. '1#413#*%DC/#3P/#O167K##>/B/6#DC/#3P/#O167#W16#
O*66-24XF#.D$$24X#16#D4.$DXX24X#3P/#.1I/6#311$K##
Y//.#O167#*I*-#W610#P/*3F#12$F#CP*6.#/7X/C#
16#01B24X#.*63CK##Damaged or entangled
cords increase the risk of electric shock.
5. ;P/4#1./6*324X#*#.1I/6#311$#1D37116CF#
DC/#*4#/+3/4C214#O167#CD23*%$/#W16#
1D37116#DC/K Use of a cord suitable for outdoor
use reduces the risk of electric shock.
6. ?W#1./6*324X#*#.1I/6#311$#24#*#7*0.#$1O*3214#
2C#D4*B127*%$/F#DC/#*#@61D47#N*D$3#826OD23#
?43/66D.3/6#\@N8?]#.613/O3/7#CD..$-K
Use of a GFCI reduces the risk of electric shock.
Personal safety
1. &3*-#*$/63F#I*3OP#IP*3#-1D#*6/#7124X#*47#DC/#
O10014#C/4C/#IP/4#1./6*324X#*#.1I/6#311$K#
'1#413#DC/#*#.1I/6#311$#IP2$/#-1D#*6/#326/7#
16#D47/6#3P/#24W$D/4O/#1W#76DXCF#*$O1P1$#16#
0/72O*3214K##

2. GC/#./6C14*$#.613/O32B/#/QD2.0/43K#<$I*-C#
I/*6#/-/#.613/O3214K##
such as dust mask, non-skid safety shoes, hard


3. [6/B/43#D4243/43214*$#C3*6324XK#94CD6/#3P/#
CI23OP#2C#24#3P/#1WW(.1C23214#%/W16/#O144/O324X#
31#.1I/6#C1D6O/#*47^16#%*33/6-#.*OZF#.2OZ24X#
D.#16#O*66-24X#3P/#311$K##

tools that have the switch on invites accidents.
4. =/01B/#*4-#*7EDC324X#Z/-#16#I6/4OP#
%/W16/#3D6424X#3P/#.1I/6#311$#14K##A wrench


5. '1#413#1B/66/*OPK#Y//.#.61./6#W11324X#*47#
%*$*4O/#*3#*$$#320/CK# This enables better control

6. '6/CC#.61./6$-K#'1#413#I/*6#$11C/#O$13P24X#16#
E/I/$$/6-K#Y//.#-1D6#P*26F#O$13P24X#*47#X$1B/C#
*I*-#W610#01B24X#.*63CK Loose clothes, jewellery

7. ?W#7/B2O/C#*6/#.61B27/7#W16#3P/#O144/O3214#1W#
7DC3#/+36*O3214#*47#O1$$/O3214#W*O2$232/CF#/4CD6/#
3P/C/#*6/#O144/O3/7#*47#.61./6$-#DC/7K Use of
dust collection can reduce dust-related hazards.
8. H4$-#DC/#C*W/3-#/QD2.0/43#3P*3#P*C#%//4#
*..61B/7#%-#*4#*..61.62*3/#C3*47*67C#*X/4O-K





Power tool use and care
1. '1#413#W16O/#3P/#.1I/6#311$K##GC/#3P/#
O166/O3#.1I/6#311$#W16#-1D6#*..$2O*3214K

safer at the rate for which it was designed.
2. '1#413#DC/#3P/#.1I/6#311$#2W#3P/#&I23OP##
71/C#413#3D64#23#14#*47#1WWK



Page 3N16#3/OP42O*$#QD/C3214CF#.$/*C/#O*$$#!(RRR(RSS(TUVUKItem 56846
3. '2CO144/O3#3P/#.$DX#W610#3P/#.1I/6#C1D6O/#
%/W16/#0*Z24X#*4-#*7EDC30/43CF#OP*4X24X#
*OO/CC162/CF#16#C31624X#.1I/6#311$CK


4. &316/#27$/#.1I/6#311$C#1D3#1W#3P/#6/*OP#1W#
OP2$76/4#*47#71#413#*$$1I#./6C14C#D4W*02$2*6#
I23P#3P/#.1I/6#311$#16#3P/C/#24C36DO3214C#
31#1./6*3/#3P/#.1I/6#311$K Power tools are
dangerous in the hands of untrained users.
5. )*243*24#.1I/6#311$CK##8P/OZ#W16#02C*$2X40/43#
16#%24724X#1W#01B24X#.*63CF#%6/*Z*X/#1W#.*63C#
*47#*4-#13P/6#O14723214#3P*3#0*-#*WW/O3#3P/#
.1I/6#311$JC#1./6*3214K##?W#7*0*X/7F#P*B/#3P/#
.1I/6#311$#6/.*26/7#%/W16/#DC/K Many accidents

6. Y//.#OD3324X#311$C#CP*6.#*47#O$/*4K

are less likely to bind and are easier to control.
7. GC/#3P/#.1I/6#311$F#*OO/CC162/C#*47#311$#%23C#
/3OK#24#*OO167*4O/#I23P#3P/C/#24C36DO3214CF#
3*Z24X#2431#*OO1D43#3P/#I16Z24X#O14723214C#
*47#3P/#I16Z#31#%/#./6W160/7K Use of the

intended could result in a hazardous situation.
Service
5*B/#-1D6#.1I/6#311$#C/6B2O/7#%-#*#QD*$2W2/7#6/.*26#
./6C14#DC24X#14$-#27/432O*$#6/.$*O/0/43#.*63CK#
This will ensure that the safety of the

Percussion Hammer Safety Warnings
1. ;/*6#/*6#.613/O316CK 
noise can cause hearing loss.
2. GC/#*D+2$2*6-#P*47$/C#CD..$2/7#I23P#3P/#311$K

3. 51$7#.1I/6#311$C#%-#24CD$*3/7#X62..24X#CD6W*O/C#
IP/4#./6W16024X#*4#1./6*3214#IP/6/#3P/#OD3324X#
311$#0*-#O143*O3#P277/4#I2624X#16#23C#1I4#O167K#

#
4. Y//.#O$/*6#1W#01B24X#.*63CK
5. G4.$DX#%/W16/#24C./O324XF#6/01B24X#16#
24C3*$$24X#%23F#16#./6W16024X#*4-#C/6B2O/K
6. [D$$#14#%23#*W3/6#24C3*$$*3214#*47#%/W16/#DC/_#
%23#0*-#01B/#%D3#)G&,#>H,#C$27/#1D3K
7. Wear steel-toed boots during use.
8. Do not operate this tool if you have back, neck,
or wrist injuries, or other conditions that will
be aggravated by the severe jerking forces
that this tool exerts upon the operator.
9. Maintain labels and nameplates on
the tool. These carry important safety
information. If unreadable or missing, contact
Harbor Freight Tools for a replacement.
10. Avoid unintentional starting. Prepare to
begin work before turning on the tool.
11. 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.
12. ;P/4#DC24X#*#P*47P/$7#.1I/6#311$F#
0*243*24#*#W260#X62.#14#3P/#311$#I23P#
%13P#P*47C#31#6/C2C3#C3*6324X#316QD/K#
13. 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.
14. This product is not a toy. Keep it
out of reach of children.
15. 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.
• 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.
16. The warnings, precautions, and instructions
discussed in this instruction manual cannot cover all
possible conditions and situations that may occur.
It must be understood by the operator that
common sense and caution are factors
which cannot be built into this product,
but must be supplied by the operator.
Vibration Safety
This tool vibrates during use. Repeated or long-term
exposure to vibration may cause temporary or permanent
physical injury, particularly to the hands, arms and
shoulders. To reduce the risk of vibration-related injury:
1. Anyone using vibrating tools regularly or for an
extended period should first be examined by a
doctor and then have regular medical check-ups
to ensure medical problems are not being caused
or worsened from use. Pregnant women or
people who have impaired blood circulation to
the hand, past hand injuries, nervous system
disorders, diabetes, or Raynaud’s Disease should
not use this tool. If you feel any medical or
physical symptoms related to vibration (such as
tingling, numbness, and white or blue fingers),
seek medical advice as soon as possible.
2. Do not smoke during use. Nicotine reduces
the blood supply to the hands and fingers,
increasing the risk of vibration-related injury.
3. Use tools with the lowest vibration when there
is a choice between different processes.
4. Include vibration-free periods each day of work.
5. Let the tool do the work.
6. To reduce vibration, maintain the tool as
explained in this manual. If any abnormal
vibration occurs, stop use immediately.
&<L9#,59&9#
?>&,=G8,?H>&

Page 4 N16#3/OP42O*$#QD/C3214CF#.$/*C/#O*$$#!(RRR(RSS(TUVUK Item 56846
GROUNDING INSTRUCTIONS
#
,H#[=9L9>,#9M98,=?8#&5H8Y#<>'#
'9<,5#N=H)#?>8H==98,#
@=HG>'?>@#;?=9#8H>>98,?H>A#
8P/OZ#I23P#*#QD*$2W2/7#/$/O362O2*4#2W#-1D#*6/#24#71D%3#
*C#31#IP/3P/6#3P/#1D3$/3#2C#.61./6$-#X61D47/7K##'1#
413#0172W-#3P/#.1I/6#O167#.$DX#.61B27/7#I23P#3P/#
311$K##>/B/6#6/01B/#3P/#X61D4724X#.614X#W610#3P/#
.$DXK##'1#413#DC/#3P/#311$#2W#3P/#.1I/6#O167#16#.$DX#2C#
7*0*X/7K##?W#7*0*X/7F#P*B/#23#6/.*26/7#%-#*#C/6B2O/#
W*O2$23-#%/W16/#DC/K##?W#3P/#.$DX#I2$$#413#W23#3P/#1D3$/3F#
P*B/#*#.61./6#1D3$/3#24C3*$$/7#%-#*#
QD*$2W2/7#/$/O362O2*4K
Double Insulated Tools: Tools with
Two Prong Plugs
1. Tools marked “Double Insulated” do not
require grounding. They have a special
double insulation system which satisfies
OSHA requirements and complies with
the applicable standards of Underwriters
Laboratories, Inc., the Canadian Standard
Association, and the National Electrical Code.
2. Double insulated tools may be used in either of the
120 volt outlets shown in the following illustration.
\&//#HD3$/3C#W16#"([614X#[$DXK]
HD3$/3C#W16#"([614X#[$DX
Extension Cords
1. Grounded tools require a three wire extension cord.
Double Insulated tools can use either
a two or three wire extension cord.
2. As the distance from the supply outlet increases,
you must use a heavier gauge extension cord.
Using extension cords with inadequately sized wire
causes a serious drop in voltage, resulting in loss of
power and possible tool damage. \&//#,*%$/#<K]
3. The smaller the gauge number of the wire, the
greater the capacity of the cord. For example,
a 14 gauge cord can carry a higher current
than a 16 gauge cord. \&//#,*%$/#<K]
4. When using more than one extension cord to make
up the total length, make sure each cord contains at
least the minimum wire size required. \&//#,*%$/#<K]
5. If you are using one extension cord for more
than one tool, add the nameplate#amperes
and use the sum to determine the required
minimum cord size. \&//#,*%$/#<K]
6. If you are using an extension cord outdoors, make
sure it is marked with the suffix “W-A” (“W” in
Canada) to indicate it is acceptable for outdoor use.
7. Make sure the extension cord is properly wired
and in good electrical condition. Always replace
a damaged extension cord or have it repaired
by a qualified electrician before using it.
8. Protect the extension cords from sharp objects,
excessive heat, and damp or wet areas.
,<`M9#<A##=98H))9>'9'#)?>?)G)#;?=9#
@<G@9#NH=#9a,9>&?H>#8H='&b#\!"c^"dc#LHM,]
><)9[M<,9
<)[9=9&
\*3#WD$$#$1*7]
9a,9>&?H>#8H='#
M9>@,5
"Te Tce UTe !cce !Tce
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 - - -
b#`*C/7#14#$202324X#3P/#$24/#B1$3*X/#761.#31#W2B/#B1$3C#*3#
!Tcf#1W#3P/#6*3/7#*0./6/CK

Page 5N16#3/OP42O*$#QD/C3214CF#.$/*C/#O*$$#!(RRR(RSS(TUVUKItem 56846
Warning Symbols and Definitions
#,P2C#2C#3P/#C*W/3-#*$/63#C-0%1$K##?3#2C#DC/7#31#
*$/63#-1D#31#.13/432*$#./6C14*$#24ED6-#P*g*67CK##
H%/-#*$$#C*W/3-#0/CC*X/C#3P*3#W1$$1I#3P2C#C-0%1$#31#
*B127#.1CC2%$/#24ED6-#16#7/*3PK
?472O*3/C#*#P*g*671DC#
C23D*3214#IP2OPF#2W#413#
*B127/7F#I2$$#6/CD$3#24#7/*3P#16#C/621DC#24ED6-K
?472O*3/C#*#P*g*671DC#
C23D*3214#IP2OPF#2W#413#
*B127/7F#O1D$7#6/CD$3#24#7/*3P#16#C/621DC#24ED6-K
?472O*3/C#*#P*g*671DC#
C23D*3214#IP2OPF#2W#413#
*B127/7F#O1D$7#6/CD$3#24#02416#16#017/6*3/#24ED6-K
<776/CC/C#.6*O32O/C#413#
6/$*3/7#31#./6C14*$#24ED6-K
Symbology
Double Insulated
LVolts
hAlternating Current
<Amperes
n0 xxxx/min. No Load Revolutions per Minute (RPM)
WARNING marking concerning Risk
of Eye Injury. Wear ANSI-approved
safety goggles with side shields.
Read the manual before set-up and/or use.
WARNING marking
concerning Risk of Fire.
Do not cover ventilation ducts.
Keep flammable objects away.
WARNING marking concerning
Risk of Electric Shock.
Properly connect power cord
to appropriate outlet.
WARNING marking concerning
Risk of Hearing Loss.
Wear hearing protection.
Specifications
Electrical Rating 120VAC / 60Hz / 10A
Bit Type 3/4" (18mm) SDS-Max Type
Bits
1 Bull Point Bit
1 Flat Bit
Functional Description
8PDOZ#
=24X
N6143#
5*47$/
5*47$/
,62XX/6 ,62XX/6#M1OZ
8*6%14#`6DCP#
?472O*316

Page 6 N16#3/OP42O*$#QD/C3214CF#.$/*C/#O*$$#!(RRR(RSS(TUVUK Item 56846
OPERATION
=/*7#3P/#9>,?=9#?)[H=,<>,#&<N9,i#
?>NH=)<,?H>#C/O3214#*3#3P/#%/X24424X##
1W#3P2C#0*4D*$#24O$D724X#*$$#3/+3#D47/6#
CD%P/*724XC#3P/6/24#%/W16/#C/3#D.#16#DC/#1W#
3P2C#.617DO3K
Tool Set Up
,H#[=9L9>,#&9=?HG&#?>jG=i#N=H)#
<88?'9>,<M#H[9=<,?H>A#
)*Z/#CD6/#3P*3#3P/#,62XX/6#2C#24#3P/#1WW(.1C23214#*47#
D4.$DX#3P/#311$#W610#23C#/$/O362O*$#1D3$/3#%/W16/#
./6W16024X#*4-#.61O/7D6/#24#3P2C#C/O3214K
1. Clean the loading end of the Bit to remove any
debris, then lubricate the Bit with grease.
2. Pull the Chuck Ring back and hold it.
3. Insert the Bit while twisting it.
!
"
:
4. Release the Chuck Ring. If not, adjust the Bit
until the Chuck Ring slides back into place.
5. Physically check that the Bit is secure before
operating. The Bit will have some play, but
should not come out when pulled.
6. To adjust the Front Handle, twist it to loosen it,
rotate it as needed, and retighten it securely.
Workpiece and Work Area Set Up
1. Designate a work area that is clean and well-lit.
The work area must not allow access by children
or pets to prevent distraction and injury.
2. Route the power cord along a safe route to reach
the work area without creating a tripping hazard or
exposing the power cord to possible damage. The
power cord must reach the work area with enough
extra length to allow free movement while working.
3. Secure loose work pieces using a vise or clamps
(not included) to prevent movement while working.
4. There must not be objects, such as utility lines,
nearby that will present a hazard while working.
If working in the ground or on a concrete slab
on the earth, call local utility company to
ensure that area is clear of utility lines.
5. Protect power cord from crushing, abrasion,
and scraping by broken rock or concrete.
6. Keep power cord away from moving machines.

Page 7N16#3/OP42O*$#QD/C3214CF#.$/*C/#O*$$#!(RRR(RSS(TUVUKItem 56846
General Operation
,H#[=9L9>,#&9=?HG&#?>jG=iA#
;/*6#<>&?(*..61B/7#C*W/3-#X1XX$/CF#/*6#.613/O3214F#
C3//$(31/#%113CF#*47#7DC3#0*CZ#7D624X#DC/K###
Y//.#W//3#O$/*6#1W#'/01$23214#5*00/6K###
Y//.#OP2$76/4#*47#*420*$C#I/$$#
O$/*6#1W#3P/#I16Z#*6/*K
1. Check Bit for dullness, cracks, or other damage.
8<G,?H>k Dull tipped bits can cause unnecessary
bit movement, resulting in tool wear and
possible injury. Use only sharp tipped bits.
2. Clearly mark the work area.
3. Make sure that the Trigger is in
the off-position, then plug the tool in.
4. Set the bit against the work area.
8<G,?H>k Keep power cord away
from moving machines.
5. Place one hand on the Front Handle and
the other hand around the Handle.
6. Press the upper part of the Trigger to start the tool.
>13/A Trigger will lock on. Press the lower
part of the Trigger to turn the tool off.
7. Push the tip forcibly down to begin striking material.
>H,?89A Running tool with no load or “empty blows”
will damage the Demolition Hammer.
8<G,?H>k Once activated, do not bear down,
or thrust forcibly against the work surface.
>13/A If the Demolition Hammer has not been used
for a long time or is being used in low temperatures,
the tool may require 3-5 minutes to warm up.
>H,9A Carbon Brushes will wear during use.
,P/#8*6%14#`6DCP#?472O*316#I2$$#$2XP3#2W#3P/#
`6DCP/C#*6/#I164K If the Carbon Brush Indicator
lights, the worn Brushes will need to be replaced with
the included Brushes by a qualified technician.
>13/A During extended operation, periodically remove
the bit and re-lubricate the loading end with grease.
8. If a different speed setting is needed, press
the lower part of the Trigger, allow the tool
to stop, and adjust the Speed Knob.
9. When work is complete, press the lower
part of the Trigger to turn the tool off.
10. To prevent accidents, turn off the tool and
disconnect its power supply after use.
11. Clean, then store the tool indoors
out of children’s reach.

Page 8 N16#3/OP42O*$#QD/C3214CF#.$/*C/#O*$$#!(RRR(RSS(TUVUK Item 56846
MAINTENANCE AND SERVICING
# [61O/7D6/C#413#C./O2W2O*$$-#/+.$*24/7#
24#3P2C#0*4D*$#0DC3#%/#./6W160/7#
14$-#%-#*#QD*$2W2/7#3/OP42O2*4K
,H#[=9L9>,#&9=?HG&#?>jG=i#N=H)#
<88?'9>,<M#H[9=<,?H>A#
)*Z/#CD6/#3P*3#3P/#,62XX/6#2C#24#3P/#1WW(.1C23214#
*47#D4.$DX#3P/#311$#W610#23C#/$/O362O*$#1D3$/3#%/W16/#
./6W16024X#*4-#.61O/7D6/#24#3P2C#C/O3214K#
,H#[=9L9>,#&9=?HG&#?>jG=i#N=H)#,HHM#
N<?MG=9A#
'1#413#DC/#7*0*X/7#/QD2.0/43K##
?W#*%4160*$#412C/#16#B2%6*3214#1OOD6CF#P*B/#
3P/#.61%$/0#O166/O3/7#%/W16/#WD63P/6#DC/K
Cleaning, Maintenance,
and Lubrication
1. `9NH=9#9<85#G&9F inspect the general
condition of the tool. Check for:
• 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. <N,9=#G&9F wipe external surfaces
of the tool with clean cloth.
3. Store in temperatures no lower than 50-60°F.
>H,9A The Demolition Hammer has airtight construction,
allowing long periods of use (approximately six
months of regular usage) before lubrication.

Page 9N16#3/OP42O*$#QD/C3214CF#.$/*C/#O*$$#!(RRR(RSS(TUVUKItem 56846
Troubleshooting
[61%$/0 [1CC2%$/#8*DC/C M2Z/$-#&1$D3214C
Tool will
not start.
1. Cord not connected.
2. No power at outlet.
3. Tool’s thermal reset breaker
tripped (if equipped).
4. Internal damage or wear.
(Carbon brushes or
Trigger, for example.)
1. Check that cord is plugged in.
2. Check power at outlet. If outlet is unpowered,
turn off tool and check circuit breaker. If breaker
is tripped, make sure circuit is right capacity
for tool and circuit has no other loads.
3. Turn off tool and allow to cool.
Press reset button on tool.
4. Have technician service tool.
Tool operates
slowly.
Extension cord too long
or wire size too small.
Eliminate use of extension cord. If an extension
cord is needed, use shorter/heavier gauge cord.
See  in GROUNDING section.
Performance
decreases
over time.
1. Bit dull or damaged.
2. Internal lubrication cold.
3. Carbon brushes worn
or damaged.
1. Keep cutting bits sharp. Replace as needed.
2. Allow tool to operate with no load
for 5 minutes before use.
3. Have qualified technician replace brushes.
Excessive
noise or
rattling.
Internal damage or wear.
(Carbon brushes or bearings,
for example.)
Have technician service tool.
Overheating. 1. Forcing tool to work too fast.
2. Bit dull or damaged.
3. Blocked motor housing vents.
4. Motor being strained by long or
small diameter extension cord.
1. Allow tool to work at its own rate.
2. Keep cutting bits sharp. Replace as needed.
3. Wear ANSI-approved safety goggles and
NIOSH-approved dust mask/respirator while
blowing dust out of motor using compressed air.
4. Eliminate use of extension cord. If an extension cord is
needed, use one with the proper diameter for its length
and load. See  in GROUNDING section.
# N1$$1I#*$$#C*W/3-#.6/O*D3214C#IP/4/B/6#72*X41C24X#16#C/6B2O24X#3P/#311$K#
###############'2CO144/O3#.1I/6#CD..$-#%/W16/#C/6B2O/K
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.
=/O167#[617DO3JC#&/62*$#>D0%/6#5/6/A#
#
>13/A If product has no serial number, record
month and year of purchase instead.
>13/A Some parts are listed and shown for
illustration purposes only, and are not available
individually as replacement parts.

Page 10 N16#3/OP42O*$#QD/C3214CF#.$/*C/#O*$$#!(RRR(RSS(TUVUK Item 56846
PARTS LIST AND DIAGRAM
Parts List
[*63 '/CO62.3214 l3-
1 Hammer Rod Protector 1
2 Ø28 Retaining Ring 1
3 Move Limited Ring 1
4 Chuck Ring 1
5 Flex Spring 1
6 Ø32 Retaining Ring 1
7 Plum Blossom Chuck 1
8 Move Limited Ring 1
9 Cover 1
10 SØ6 Steel Ball 4
11 Front Cover 1
12 O Ring Ø27.5×Ø2 1
13 Lock Bit Bead 2
14 Hammer Bit Sheath 1
15 Impact Hammer 1
16 Hammer Ring 1
17 Impact Piston 1
18 O Ring Ø23.2x3.5 1
19 Cylinder 1
20 Cylinder Cover 1
21 Hex Socket Bolt M6×25(12.9) 8
22 Ø6×Ø10.5 Flat Washer 4
23 O Ring Ø44×Ø2.2 1
24 O Ring Ø22×Ø4 1
25 O Ring Ø24×Ø1.8 1
26 Gas Press Piston 1
27 Piston Pin Ø8×26 1
28 Connecting Rod Asm. 1
29 M4×12 Hex Socket Bolt 4
30 Oil Tank Cover 1
31 O Ring Ø55×Ø2.5 1
32 Crank Shaft 1
33 4×12 Key 1
34 Ø47 Retaining Ring 1
35 6303 RS Ball Bearing 1
36 O Ring Ø46.5×Ø2 1
37 Oil Seal Ring Ø17×Ø30×6 1
38 Gearbox 1
39 Gear 1
40 6001 RS Ball Bearing 1
41 Inner Cover 1
42 Ø5 Spring Washer 4
43 M5×16 Hex Socket Bolt 4
44 Ø5×14 Pin 1
45 Seal Ring 1
46 O Ring Ø31.5XØ2 1
47 6201 RS Ball Bearing 1
[*63 '/CO62.3214 l3-
48 Armature 1
49 Armature Insulation Washer 1
50 608ZT CW Ball Bearing 1
51 ST4.8×65 Screw 2
53 Stator 1
54 Fan Guide 1
55 Housing Asm. 1
56 Ø6 Spring Washer 4
57 Carbon Brush Wire 2
58 Carbon Brush 2
59 Coil Spring 2
60 Screw ST3.5x12 4
61 Fan Cover 1
62 ST4.2×16 Screw 8
63 Bottom Support Seat 1
64 Bottom Shock Absorption Jacket 1
65 Main Handle 1
66 Top Support Seat 1
67 Hex Socket Bolt M5×12 2
68 Top Shock Absorption Jacket 1
69 Shock Absorption Spring 1
70 Shock Absorption Pivot 1
71 Washer 2
72 M6×14 Hex Socket Bolt 2
73 Trigger 1
74 ST5.5×25 Machine Screw 1
75 Main Handle Cover 1
76 Screw ST5.5x38 1
79 Indicator Subassembly 1
80 Carbon Brush Indicator 1
81 Cord Clip 1
82 Cord Armor 1
83 Cord 1
84 Side Handle Asm. Steel Tie 1
85 Ø5×23 Spring Column Pin 1
86 Abnormity Bolt 1
87 Front Handle Asm. Base 1
88 Front Handle Asm. Cover 1
89 Front Handle Asm. 1
90 Grease Tube 1
92 Front Cover Washer 2mm 1
93 Woolen Washer Ø7.2×7 1
94 Woolen Ring Ø17×4.5 1
95 O Ring Ø31xØ5.25 1
96 Rubber Cushion 1
97 Seal Ø15.5xØ23.2x3.3 2

Page 11N16#3/OP42O*$#QD/C3214CF#.$/*C/#O*$$#!(RRR(RSS(TUVUKItem 56846
Assembly Diagram
1 4
3 7
3 6
3 5
3 4
3 3
3 2
3 1
3 0
2 9
9 3
3 8
5 0
4 9
4 8
4 7
4 5
4 6
4 4
1 1
1 0
9 2
9 4
9
78
6
5
4
1
3
2
1 5
1 3
4 2
4 3
4 1
3 9
4 0
8 3
8 2
8 1
6 2
8 0
7 9
7 6
7 5
6 2
7 4
7 1
7 0
6 9
6 8
6 6
7 2
7 3
6 5
6 4
6 3
6 7
5 3
6 1
6 2
6 0
5 9
8 8
8 7
8 6
8 5
8 4
5 6
5 5
5 4
5 1
2 2
5 8
5 7
2 1
5 8
9 0
8 9
1 2
9 5
2 6
2 4 2 5
2 8
2 7
2 3
2 0 2 1
1 9
1 8
1 7
9 6
1 6
9 7 9 7

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.
L2C23#1D6#I/%C23/#*3A#P33.A^^IIIKP*6%16W6/2XP3KO10
90*2$#1D6#3/OP42O*$#CD..163#*3A#.617DO3CD..163mP*6%16W6/2XP3KO10
N16#3/OP42O*$#QD/C3214CF#.$/*C/#O*$$#!(RRR(RSS(TUVU
Copyright© 2019 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.
"STd!#<X1D6*#=1*7##n##8*$*%*C*CF#8<#V!:c"##n##!(RRR(RSS(TUVU