Chicago Electric DEMOLITION HAMMER 93853 User manual

Model 93853
ASSEMBLY AND OPERATING INSTRUCTIONS
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our Web site at: http://www.harborfreight.com
Copyright© 2006 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
For technical questions, please call 1-800-444-3353.
®
Due to continuing improvements, actual product may differ slightly from the product described herein.
TO PREVENT SERIOUS INJURY,
READ AND UNDERSTAND ALL WARNINGS
AND INSTRUCTIONS BEFORE USE.
without the express written consent of Harbor Freight Tools.
DEMOLITION HAMMER

SKU 93853 For technical questions, please call 1-800-444-3353 PAGE 2
PRODUCT SPECIFICATIONS
SAVE THIS MANUAL
You will need this manual for the safety warnings and precautions, assembly, operating,
inspection, maintenance and cleaning procedures, parts list and assembly diagram.
Keep your invoice with this manual. Write the invoice number on the inside of the
front cover. Keep this manual and invoice in a safe and dry place for future reference.
GENERAL SAFETY RULES
WARNING!
READ AND UNDERSTAND ALL INSTRUCTIONS
Failure to follow all instructions listed in this manual
may result in electric shock, fire, and/or serious injury.
SAVE THESE INSTRUCTIONS
Item Description
Electrical Requirements 120 VAC / 60 Hz / 1500 Watts
20 AMPs (Start Up) / 9.5 AMPs (No Load) / 13.0 AMPs (With Load)
Power Cord Type: 82” Long / 14AWG x 2C
Power Cord Plug Type: 2-Prong / Polarized
Power Switch Type: 2-Position Toggle Switch w/Slider Cover
Blows Per Minute 900 ~ 1800 BPM (Using Variable Speed Dial)
Variable Speed Settings 1-2-3-4-5-6
Handle Types Fixed Main Rear Handle (7” x 4-1/4” x 1-3/8”)
Rotating Swivel “D” Style Auxiliary Handle (6” x 5” x 1-1/4”)
Included Chisels Bull Point (13-7/8” Long / Qty. 1)
Spade (1” Wide x 13-7/8” Long / Qty. 1)
Chisel Shank Size 45/64” Diameter
Chisel Hardness Bull Point (51 HRC) / Spade (52 HRC) / Tolerance (30 ~ 53 HRC)
Chisel Retainer Quick-Release Retainer
Overall Dimensions 22-1/4” L x 8” W x 11” H
Net Weight 34 Pounds
WORK AREA
1. Keep your work area clean and well lit. Cluttered benches and dark areas
invite accidents.
Note: SDS and SDS MAX chisels (both not included)
can be used with this Demolition Hammer
REV 06/06

SKU 93853 For technical questions, please call 1-800-444-3353 PAGE 3
2. Do not operate power tools in explosive atmospheres, such as in the
presence of flammable liquids, gases, or dust. Power tools create sparks
which may ignite the dust or fumes.
3. Keep bystanders, children, and visitors away while operating a power tool.
Distractions can cause you to lose control. Protect others in the work area from
debris such as chips and sparks. Provide barriers or shields as needed.
ELECTRICAL SAFETY
4. Grounded tools must be plugged into an outlet properly installed and
grounded in accordance with all codes and ordinances. Never remove the
grounding prong or modify the plug in any way. Do not use any adapter
plugs. Check with a qualified electrician if you are in doubt as to whether
the outlet is properly grounded. If the tools should electrically malfunction or
break down, grounding provides a low resistance path to carry electricity away
from the user.
5. Double insulated tools are equipped with a polarized plug (one blade is
wider than the other). This plug will fit in a polarized outlet only one way. If
the plug does not fit fully in the outlet, reverse the plug. If it still does not
fit, contact a qualified electrician to install a polarized outlet. Do not
change the plug in any way. Double insulation eliminates the need for the
three wire grounded power cord and grounded power supply system.
6. Avoid body contact with grounded surfaces such as pipes, radiators,
ranges, and refrigerators. There is an increased risk of electric shock if your
body is grounded.
7. Do not expose power tools to rain or wet conditions. Water entering a power
tool will increase the risk of electric shock.
8. Do not abuse the Power Cord. Never use the Power Cord to carry the tools
or pull the Plug from an outlet. Keep the Power Cord away from heat, oil,
sharp edges, or moving parts. Replace damaged Power Cords immediately.
Damaged Power Cords increase the risk of electric shock.
9. When operating a power tool outside, use an outdoor extension cord
marked “W-A” or “W”. These extension cords are rated for outdoor use, and
reduce the risk of electric shock.
PERSONAL SAFETY
10. Stay alert. Watch what you are doing, and use common sense when

SKU 93853 For technical questions, please call 1-800-444-3353 PAGE 4
operating a power tool. Do not use a power tool while tired or under the
influence of drugs, alcohol, or medication. A moment of inattention while
operating power tools may result in serious personal injury.
11. Dress properly. Do not wear loose clothing or jewelry. Contain long hair.
Keep your hair, clothing, and gloves away from moving parts. Loose
clothes, jewelry, or long hair can be caught in moving parts.
12. Avoid accidental starting. Be sure the Power Switch is off before plugging
in. Plugging in power tools with the Power Switch on invites accidents.
13. Remove adjusting keys or wrenches before turning the power tool on. A
wrench or a key that is left attached to a rotating part of the power tool may
result in personal injury.
14. Do not overreach. Keep proper footing and balance at all times. Proper
footing and balance enables better control of the power tool in unexpected
situations.
15. Use safety equipment. Always wear eye protection. Dust mask, non-
skid safety shoes, hard hat, or hearing protection must be used for
appropriate conditions.
TOOL USE AND CARE
16. Use clamps (not included) or other practical ways to secure and support
the workpiece to a stable platform. Holding the work by hand or against your
body is unstable and may lead to loss of control.
17. Do not force the tool. Use the correct tool for your application. The correct
tool will do the job better and safer at the rate for which it is designed.
18. Do not use the power tool if the Power Switch does not turn it on or off.
Any tool that cannot be controlled with the Power Switch is dangerous and must
be replaced.
19. Disconnect the Power Cord Plug from the power source before making any
adjustments, changing accessories, or storing the tool. Such preventive
safety measures reduce the risk of starting the tool accidentally.
20. Store idle tools out of reach of children and other untrained persons. Tools
are dangerous in the hands of untrained users.
21. Maintain tools with care. Keep cutting tools sharp and clean. Properly

SKU 93853 For technical questions, please call 1-800-444-3353 PAGE 5
maintained tools with a sharp cutting edge are less likely to bind and are easier
to control. Do not use a damaged tool. Tag damaged tools “Do not use” until
repaired.
22. Check for misalignment or binding of moving parts, breakage of parts, and
any other condition that may affect the tool’s operation. If damaged, have
the tool serviced before using. Many accidents are caused by poorly
maintained tools.
23. Use only accessories that are recommended by the manufacturer for your
model. Accessories that may be suitable for one tool may become hazardous
when used on another tool.
SERVICE
24. Tool service must be performed only by qualified repair personnel. Service
or maintenance performed by unqualified personnel could result in a risk of injury.
25. When servicing a tool, use only identical replacement parts. Follow
instructions in the “Inspection, Maintenance, And Cleaning” section of this
manual. Use of unauthorized parts or failure to follow maintenance instructions
may create a risk of electric shock or injury.
SPECIFIC SAFETY RULES
1. Maintain labels and nameplates on the Demolition Hammer. These carry
important information. If unreadable or missing, contact Harbor Freight Tools for
a replacement.
2. Always wear ANSI-approved safety impact eye glasses and a full
face shield when using the Demolition Hammer. Also wear heavy
duty steel-toe boots, hearing protection, dust mask or respirator, and
heavy duty work gloves. Using personal safety devices reduce the risk for
injury.
3. Maintain a safe working environment. Keep the work area well lit. Make sure
there is adequate surrounding workspace. Always keep the work area free of
obstructions, grease, oil, trash, and other debris. Do not use a power tool in
areas near flammable chemicals, dusts, and vapors. Do not use this product in
a damp or wet location.
4. Avoid unintentional starting. Make sure you are prepared to begin work
before turning on the Demolition Hammer.

SKU 93853 For technical questions, please call 1-800-444-3353 PAGE 6
5. Do not force the Demolition Hammer. This tool will do the work better and
safer at the speed and capacity for which it was designed.
6. WARNING! Keep hands, fingers, and feet safety away from the cutting
area.
7. Never leave the Demolition Hammer unattended when it is plugged into
an electrical outlet. Turn off the tool, and unplug it from its electrical outlet
before leaving.
8. Before using the Demolition Hammer, check to make sure the Chisel is
properly mounted in the Slider of the tool. Make sure the Chisel is sharp, and
is not cracked or bent.
9. Industrial applications must follow OSHA guidelines.
10. Always hold the Demolition Hammer with both hands by its insulated
gripping surfaces; this offers protection against electrical shock, if the tool’s
Chisel contacts hidden wiring or its own Power Cord.
11. Do not drill or break into existing walls, floors, or other blind areas where
electrical wiring may exist. If this situation is unavoidable, disconnect all fuses
or circuit breakers feeding the worksite.
12. Use a metal detector to determine if there are gas or water pipes hidden in
the work area or call the local utility company for assistance before
beginning the operation. Striking or cutting into a gas line will result in
explosion. Water entering an electrical device may cause electrocution.
13. Position yourself to avoid being caught between the Demolition Hammer or
Auxiliary Handle and walls or posts. Should the Chisel become bound or
jammed in the work, the reaction of the tool could crush your hand or leg.
14. Do not strike the Chisel with a handheld hammer or sledge hammer when
attempting to dislodge a bound or jammed Chisel. Fragments of metal from
the Chisel could dislodge and strike you or bystanders.
15. Never place the Demolition Hammer down until the Motor has come to a
complete stop.
16. The Chisel may become hot after prolonged use. When removing the Chisel
from the tool, avoid contact with skin and use proper protective gloves when
grasping the Chisel.

SKU 93853 For technical questions, please call 1-800-444-3353 PAGE 7
19. Always unplug the Demolition Hammer from its electrical outlet before
performing and inspection, maintenance, or cleaning procedures.
20. Keep this product and all other tools and equipment away from children and
other unauthorized people. Do not allow spectators in the work area.
21. Performance of this tool (if powered by line voltage) may vary depending on
variations in local line voltage. Extension cord usage may also affect tool
performance.
22. Use the right tool for the job. Do not attempt to force a small tool to do the
work of a larger industrial tool. There are certain applications for which
this tool was designed. It will do the job better and more safely at the rate for
which it was intended. Do not modify this tool, and do not use this tool for a
purpose for which it is not intended.
17. Do not force the Chisel into the workpiece when cutting. Apply moderate
pressure, allowing the Chisel to cut without being forced.
18. Never attempt to remove material stuck in the moving parts of the
Demolition Hammer while it is plugged in and running.
23. WARNING! Some dust created by power sanding, sawing, grinding, drilling,
and other construction activities, contain chemicals known (to the State of
California) to cause cancer, birth defects or other reproductive harm. Some
examples of these chemicals are: lead from lead-based paints, crystalline silica
from bricks and cement or other masonry products, arsenic and chromium from
chemically treated lumber. Your risk from these exposures varies, depending on
how often you do this type of work. To reduce your exposure to these chemicals:
work in a well ventilated area, and work with approved safety equipment, such as
those dust masks that are specially designed to filter out microscopic particles.
(California Health & Safety Code § 25249.5, et seq.)
24. WARNING! People with pacemakers should consult their physician(s)
before using this product. Operation of electrical equipment in close proximity to
a heart pacemaker could cause interference or failure of the pacemaker.
25. WARNING! The warnings and cautions discussed in this 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.
SAVE THESE INSTRUCTIONS

SKU 93853 For technical questions, please call 1-800-444-3353 PAGE 8
GROUNDING
WARNING!
GROUNDED TOOLS: TOOLS WITH THREE PRONG PLUGS
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 Figure A.)
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 Figure A.)
3. Your 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 following illustration. (See Figure A.)
FIGURE A
120 VOLT,
GROUNDED,
ELECTRICAL OUTLET
THIS PRODUCT
DOES NOT USE A
3-PRONG PLUG
Improperly connecting the grounding wire can result in the risk of electric shock.
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.

SKU 93853 For technical questions, please call 1-800-444-3353 PAGE 9
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 Figure C, next page.)
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 Figure C.)
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 Figure C.)
GROUNDED TOOLS: TOOLS WITH THREE PRONG PLUGS
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 Figure B.)
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 Figure B.)
3. Your 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 following illustration. (See Figure B.)
THIS PRODUCT
USES A
2-PRONG PLUG
120 VOLT,
GROUNDED,
ELECTRICAL OUTLETS
FIGURE B

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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 your 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 your extension cords from sharp objects, excessive heat, and damp or
wet areas.
RECOMMENDED MINIMUM WIRE GAUGE FOR EXTENSION CORDS*
(120 VOLT)
NAMEPLATE
AMPERES
(
At Full Load
)
EXTENSION CORD LENGTH
25
Feet
50
Feet
75
Feet
100
Feet
150
Feet
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.
FIGURE C
SYMBOLOGY
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 Figure C.)
FIGURE D

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UNPACKING
When unpacking, check to make sure all the parts shown on the Parts List on page 16
are included. If any parts are missing or broken, please call Harbor Freight Tools at the
number shown on the cover of this manual as soon as possible.
NOTE:
For additional information regarding the parts listed in the following pages,
refer to the Assembly Diagrams on page 17.
1. CAUTION! Always make sure the Power Switch (66) of the Demolition
Hammer is in its “OFF” position and the tool is unplugged from its electrical outlet
prior to adding accessories or performing maintenance on the tool.
PRODUCT FEATURES
OIL CAP
(45)
SLIDER
(4)
FRONT CAP
(1)
KNOB
(105)
AUXILIARY HANDLE
(104)
POWER SWITCH
(66)
VARIABLE
SPEED CONTROL
(72)
FIGURE E
1. Oil Cap (45): Prior to the Demolition Hammer’s first use, remove the Oil Cap
and check to make sure the tool is properly filled with grease. If necessary, fill
the tool with approximately 1-1/4 ounces of #3 Lithium-based grease (not
included). Then, replace the Oil Cap. Thereafter, replace the grease at the end
of every 70 to 80 hours of tool use.
(See Figure E.)

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FIGURE F
2. Power Switch (66): The Demolition Hammer is switched “ON” by the slide
switch located in the rear Handle (62). To turn the tool “ON”, slide the switch to
the right. To turn the tool “OFF”, slide the switch to the left. (See Figure E.)
3. Variable Speed Control (72): The Demolition Hammer is equipped with a
Variable Speed Control Dial. The impact rate (BPM) and rotating speed (RPM)
can be varied according to the type of work being performed by setting the
Variable Speed Control Dial to the selected setting: 1-2-3-4-5-6 (“1” Being the
lowest. “6” Being the highest.) The Variable Speed Control Dial may be
adjusted while the Motor is running with the tool free from work, allowing the
operator to adjust the impact rate and rotating speed according to the actual
application. (See Figure E.)
4. Auxiliary Handle (104) and Knob (105): The Demolition Hammer must be
supported with the Auxiliary Handle, which can be swiveled 360 degrees. To
reposition and/or swivel the Auxiliary Handle, loosen the Knob. Move the
Auxiliary Handle to the desired position along the barrel of the tool and firmly
retighten the Knob. (See Figure E.)
5. Front Cap (1) and Slider (4): To install a Chisel (106, 107), clean the insert
shank end of the chisel to remove any debris. Then, lightly grease the shank
with a light oil or grease. Insert the Chisel into the Slider through the Front Cap,
while twisting and pushing inward until the Chisel locks into place. (Pull outward
on the Chisel to make sure it is locked into the Slider. (See Figure F.)
SLIDER (4)
FRONT CAP
(1)
OIL OR GREASE
(NOT INCLUDED)
CHISEL
(106, 107)
CHISEL
(106, 107)
SLIDER (4)
FRONT CAP (1)
OPERATING INSTRUCTIONS
WARNING! Always wear ANSI-approved safety impact eye
glasses and a full face shield when using the Demolition Hammer.
Also wear heavy duty steel-toe boots, hearing protection, dust mask or
respirator, and heavy duty work gloves.

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1. Install a Chisel (106, 107) as previously discussed. (See Figure F.)
2. Make sure the Power Switch (66) is in its “OFF” position. Then, connect the
Power Cord & Plug (70) to the nearest 120 volt, grounded electrical outlet.
(See Figure E.)
3. Grasp the Demolition Hammer firmly by its rear Handle (62) and Auxiliary Handle
(104). Then, turn the Power Switch (66) to its “ON” position to begin work.
IMPORTANT: This Demolition Hammer requires a short period of time to warm
up. Depending on the room temperature, this time may vary from approximately
15 seconds (at 90 degrees Fahrenheit) to 2 minutes (at 32 degrees Fahrenheit).
A new Hammer requires a break-in period before full performance is
realized. This period may require up to 5 hours operation. (See Figure E.)
4. For the best penetration rates in concrete, run the Demolition Hammer with a
steady pressure but do not use excessive force as this will decrease the efficiency
of the tool.
5. If necessary, adjust the Variable Speed Control Dial (72) to increase the tool’s
cutting efficiency. (See Figure E.)
6. When finished using the Demolition Hammer, turn the Power Switch (66) to its
“OFF” position. Then, unplug the tool from its electrical outlet. (See Figure E.)
7. Allow the Chisel (106, 107) to completely cool. Then, pull and hold the locking
Slider (4) backward and pull the Chisel forward. The Chisel should be cleaned
after removing. (See Figure F.)
8. Make sure to store the Demolition Hammer in a clean, dry, safe location out of
reach of children and other unauthorized people.
INSPECTION, MAINTENANCE, AND CLEANING
1. CAUTION! Always make sure the Power Switch (66) of the Demolition
Hammer is in its “OFF” position and the tool is unplugged from its electrical outlet
prior to performing any inspection, maintenance, or cleaning.
2. Before each use, inspect the general condition of the Demolition Hammer.
Check for loose screws, misalignment or binding of moving parts, cracked or
broken parts, damaged electrical wiring, and any other condition that may affect
its safe operation. If abnormal noise or vibration occurs, have the problem
corrected before further use. Do not use damaged equipment.

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3. To replace the Motor Carbon Brushes: It may become necessary at sometime
to replace or clean the two Carbon Brushes (76) when the Motor performance
decreases, or stops working completely. The Carbon Brushes are located on
each side of the Motor Casing (61). To replace the Carbon Brushes, remove the
two Brush Holder Covers (79). Remove the Brush Caps (77). Then, remove the
two Carbon Brushes from the two Brush Holders (75). If the Carbon Brushes are
worn down, replace both Carbon Brushes. If, however, the Carbon Brushes are
just dirty they may be cleaned by rubbing them with a pencil eraser. If cleaning
and replacing used brushes, try to install them in the same holders and in the
same direction they were removed. When installing the Carbon Brushes, make
sure the carbon portion of the Carbon Brushes contact the Motor’s Rotor and that
the springs face away from the Motor. Also, make sure the springs operate freely.
After replacement or cleaning, replace the two Brush Holder Covers.
NOTE: New Carbon Brushes tend to arc or spark when first used until they wear
and conform to the Motor’s Rotor. (See Figure G.)
4. Every 70 to 80 hours of tool use: Remove the Oil Cap (45) and replace the
grease. Fill the tool with approximately 1-1/4 ounces of #3 Lithium-based
grease (not included). Then, replace the Oil Cap. (See Figure E.)
5. To clean the exterior parts of the Demolition Hammer, use only a clean cloth
and mild detergent. Then, dry. Use a vacuum or compressed air to clean the
Motor Air Vents. Do not immerse any electrical part of the tool in any liquids.
6. When storing, store the tool in a clean, dry, safe location out of reach of children
and other unauthorized people.
7. CAUTION! All maintenance, service, or repairs not mentioned in this
manual must only be performed by a qualified service technician.
FIGURE G
CARBON BRUSH
(76)
BRUSH HOLDER
(75)
BRUSH CAP
(77)
BRUSH HOLDER COVER
(79)

SKU 93853 For technical questions, please call 1-800-444-3353 PAGE 15
TROUBLESHOOTING
Problem Possible Solution
Chisel installs with difficulty. 1. Make sure the Chisel shank, Front Cap, and Slider are free of
debris and lightly oiled or greased. (See page 12.)
Tool does not run. 1. Make sure the Power Switch is in its “ON” position.
(See page 11.)
2. Make sure the Power Cord & Plug is connected to a working
120 volt, grounded electrical outlet. (See page 9.)
3. Make sure the Power Cord & Plug is not damaged.
4. Make sure the tool is filled with approximately 1-1/4 ounces
of #3 Lithium-base grease. (See page 11.)
5. Check the Motor Carbon Brushes for excessive wear
and/or debris. Replace or clean if necessary. (See page 14.)
6. Have a qualified service technician check out the tool.
Tool does not stop. 1. Make sure the Power Switch is in its “OFF” position.
(See page 11.)
2. Immediately disconnect the Power Cord & Plug from its
electrical outlet, and have a qualified service technician
check out the tool for damage and/or defects.
Poor cutting efficiency. 1. Make sure the Chisel is clean and sharp.
2. Adjust the Variable Speed Control Dial for the type of work
being done. (See page 12.)
3. Apply moderate pressure only. Allow the tool to do the
cutting without being forced.
4. Check the Motor Carbon Brushes for excessive wear
and/or debris. Replace or clean if necessary. (See page 14.)
5. Have a qualified service technician check out the tool for
damage and/or defects.
Tool overheats and suddenly
stops running.
1. Make sure the tool is filled with approximately 1-1/4 ounces
of #3 Lithium-base grease. (See page 11.)
2. Make sure the Motor Air Vents are clean and free of
debris. (See page 14.)
5. Have a qualified service technician check out the tool for
damage and/or defects.

SKU 93853 For technical questions, please call 1-800-444-3353 PAGE 16
PARTS LIST
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 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 RISKS 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.
Part # Description Qty. Part # Description Qty.
1 Front Cap 1 45 Oil Cap 1
2 Axil Circlip (28) 1 46 O-Ring 1
3 Retainer Ring 1 47 Bolt (M4x14) 3
4 Slider 1 48 Spring Washer 3
5 Rubber Ring 1 49 Flat Washer 3
6 Spring Washer 1 50 Top Cover 1
7 Spring 1 51 O-Ring 1
8 Connecting Sheath 1 52 Wheel Box 1
9 Bolt (M10x30) 4 53 Oil Seal 1
10 Spring Washer 4 54 Bearing (6202) 1
11 Grip Slipper 1 55 Flat Washer 2
12 O-Ring 1 56 Spring Washer 2
13 Column Pin (8x19.5) 6 57 Bolt (M6x25) 2
14 Guard Ring Sleeve 1 58* Tapping Bolt (ST4.8x65) 2
15 O-Ring 1 59* Stator Holding Plate 2
16 Circlip 2 60* Air Baffle 1
17 Oil Seal Ferrule 1
61* Motor Casing 1
18 Top Cover 1 62 Handle 1
19 Secondary Striker 1 63 Tapping Bolt (ST4.8x25) 4
20 Anti-Vibration Ring 1 64 Capacitor 1
21 Guide Sheath 1 65 Switch 1
22 Cylinder Connector 1 66 Power Switch 1
23 O-Ring 1 67 Inductor 1
24 Ram 1 68 Tapping Bolt (ST4.2x16) 2
25 O-Ring 2 69 Cable Clamp 1
26 Control Bushing 1 70 Power Cord & Plug 1
27 Compression Spring 1 71 Cable Sheath 1
28 Piston Pin 1 72 Variable Speed Control Dial 1
29 Needle Bearing (NK14/16) 1 73* Screw (M8x45) 8
30 Cylinder 1
74* Flat Washer 4
31 Piston 1
75** Brush Holder 2
32 Connecting Rod 1
76** Carbon Brush 2
33*Bearing Cap 1 77** Brush Cap 2
34*Bearing (6201) 1 78 Tapping Bolt (ST4.2x13) 4
35*Stator 1 79 Cover 2
36*Rotor 1 101 Bolt (M8x140) 1
37*Fan 1 102 Clamp 2
38 Cylinder Case 1 103 Chuck Ring 1
39 Screw (M8x35) 4 104 Auxiliary Handle 1
40* Spring (8) 8 105 Knob 1
41 O-Ring 1 106 Spade Chisel 1
42 Centripetal Needle Holder Assy. 2 107 Bull Point Chisel 1
43 Adjusting Washer 1
44 Large Gear 1 109* Complete Motor Assy.
(Includes parts 33*, 34*, 35*, 36*, 37*, 40*, 58*,
59*, 60*, 61*, 73*, 74*)
1
---------- ----------------------------------------------- --------- 110** Complete Carbon Brush Assy.
(Includes parts 75**, 76**, 77**)
1
* Cannot be ordered individually. Must be ordered as a complete Motor Assembly.
** Cannot be ordered individually. Must be ordered as a complete Carbon Brush Assembly.
REV 06/06

SKU 93853 For technical questions, please call 1-800-444-3353 PAGE 17
ASSEMBLY DIAGRAM
NOTE:
Some parts are listed and shown for illustration purposes only,
and are not available individually as replacement parts.
106: Spade Chisel not shown. 107: Ball Point Chisel not shown.
**** *
***
*
*
**
**
**
**

SKU 93853 For technical questions, please call 1-800-444-3353 PAGE 18
LIMITED 1 YEAR/
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 for a period of ninety days from date of purchase that the motor is
free of defects in materials and workmanship. Harbor Freight Tools also warrants to the original purchaser, for
a period of one year from date of purchase, that all other par ts and components of the product are free from
defects in materials and workmanship. This warranty does not apply to damage due directly or indirectly, to
misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, 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.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-33533491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • [phone]
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-33533491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • [phone]
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • [phone]
WARRANTY CARD