Power Fist 8957425 User manual

V4.0 8957425
Pleaseread and understand allinstructionsbeforeuse.Retain this manualfor
futurereference.
User Manual
120V 1,000 BPM Demolition
Hammer Kit

8957425 120V1,000 BPM Demolition Hammer Kit V4.0
2 For technical questions call1-800-665-8685
SPECIFICATIONS
Motor 120V,60Hz,15A
Chuck Hex
Impact Rate 1000 BPM
ToolHolder
1-1/8 in.Hex
Impact Energy
62J
SAFETY
WARNING! Read and understand all instructions before using this tool. The
operator must follow basic precautions to reduce the risk of personalinjury
and/or damage to the equipment.
Keep this manual for safety warnings, precautions, operating or inspection and
maintenance instructions.
IMPORTANT SAFETY INFORMATION
•Read and understand all instructions. Failure to follow all instructions may
result in serious injury or property damage.
•The warnings, cautions, and instructions in this manual cannot cover all
possible conditions or situations that could occur. Exercise common sense
and caution when using this tool. Always be aware of the environment and
ensure that the tool is used in a safe and responsible manner.
•Do not allow persons to operate or assemble the product until they have
read this manual and have developed a thorough understanding of how it
works.
•Do not modify this product in any way. Unauthorized modification may
impair the function and/or safety and could affect the life of the product.
120V 1,000 BPM Demolition
Hammer Kit

V4.0 120V1,000 BPM Demolition Hammer Kit 8957425
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There are specific applications for which the product was designed.
•Use the right tool for the job. DO NOT attempt to force small equipment to
do the work of larger industrial equipment. There are certain applications
for which this equipment was designed. This product will be safer and do a
better job at the capacity for which it was intended. DO NOT use this
equipment for a purpose for which it was not intended.
•Industrial or commercial applications must follow OSHA requirements.
WORK AREA SAFETY
•Inspect the work area before each use. Keep work area clean, dry, free of
clutter, and well-lit. Cluttered, wet, or dark work areas can result in injury.
Using the product in confined work areas may put you dangerously close to
cutting tools and rotating parts.
•Do not use the product where there is a risk of causing a fire or an
explosion; e.g., in the presence of flammable liquids, gases, or dust. The
product can create sparks, which may ignite the flammable liquids, gases,
or dust.
•Do not allow the hammer to come into contact with an electrical source.
The tool is not insulated and contact will cause electrical shock.
•Keep children and bystanders away from the work area while operating the
tool. Do not allow children to handle the product.
•Be aware of all power lines, electrical circuits, water pipes, and other
mechanical hazards in your work area. Some of these hazards may be
hidden from your view and may cause personal injury and/or property
damage if contacted.
PERSONAL SAFETY
•Stay alert, watch what you are doing, and use common sense when
operating the tool. Do not use the tool while you are tired or under the
influence of drugs, alcohol, or medication. A moment of inattention while
operating the tool may result in serious personal injury.
•Dress properly. Do not wear loose clothing, dangling objects, or jewelry.
Keep your hair, clothing and gloves away from moving parts. Loose clothes,
jewelry, or long hair can be caught in moving parts. Air vents on the tool

8957425 120V1,000 BPM Demolition Hammer Kit V4.0
4 For technical questions call1-800-665-8685
often cover moving parts and should be avoided.
•Wear the proper personal protective equipment when necessary. Use ANSI
Z87.1 compliant safety goggles (not safety glasses) with side shields, or
when needed, a face shield. Use a dust mask in dusty work conditions. Also
use non-skid safety shoes, hardhat, gloves, dust collection systems, and
hearing protection when appropriate. This applies to all persons in the work
area.
•Do not overreach. Keep proper footing and balance at all times.
•Remove keys or wrenches before connecting the tool to an air supply,
power supply, or turning on the tool. A wrench or key that is left attached to
a rotating part of the tool may cause personal injury.
•Secure the work with clamps or a vise instead of your hand when practical.
This safety precaution allows for proper tool operation using both hands.
HEX BREAKER HAMMERUSE AND CARE
•Do not force the demolition hammer. Products are safer and do a better job
when used in the manner for which they are designed. Plan your work, and
use the correct product for the job.
•Check for damaged parts before each use. Carefully check that the product
will operate properly and perform its intended function. Replace damaged
or worn parts immediately. Never operate the product with a damaged part.
•Do not use a product with a malfunctioning switch. Any power tool that
cannot be controlled with the power switch is dangerous and must be
repaired by an authorized service representative before using.
•Disconnect the power/air supply from the product and place the switch in
the locked or off position before making any adjustments, changing
accessories, or storing the tool. Such preventive safety measures reduce
the risk of starting the tool accidentally.
•Store the hammer when it is not in use. Store it in a dry, secure place out of
the reach of children. Inspect the tool for good working condition prior to
storage and before re-use.
•Use only accessories that are recommended by the manufacturer for use
with your product. Accessories that may be suitable for one product may

V4.0 120V1,000 BPM Demolition Hammer Kit 8957425
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create a risk of injury when used with another tool. Never use an accessory
that has a lower operating speed or operating pressure than the tool itself.
•Keep guards in place and in working order. Never operate the product
without the guards in place.
•Do not leave the demolition hammer running unattended.
SPECIFIC OPERATION WARNINGS
•To reduce the risk of injury always wear eye protection
•Wear ear protection when using the hammer. Exposure to noise can cause
hearing loss.
•Wear heavy duty anti vibration gloves.
•Be sure the bit is secured in place before operation.
•Hold power tools by insulated gripping surfaces, when performing an
operation where the cutting tool may contact hidden wiring or its own cord.
•When drilling or screwing into walls, ceilings, etc., make sure beforehand
that you will not damage any hidden electric cables. During this work you
should not touch any metal parts of the machine; only touch the machine by
the plastic housing.
•Always be sure you have a firm footing.
•Hold the hammer firmly with both hands.
•Be sure no one is below you when using the hammer in high locations.
•Do not point the hammer at anyone in the area when operating. The bit
could fly out and seriously injure someone.
•Burn hazard. Do not touch the bit or parts close to the bit immediately after
operation; they will be extremely hot.
GROUNDING
•This machine must be grounded while in use to protect the operator from
electrical shock. This unit is equipped with an electrical cord that has an
equipment grounding conductor and a grounding plug. The plug MUST be
plugged into a matching receptacle that is properly installed and grounded
in accordance with ALL local codes and ordinances.

8957425 120V1,000 BPM Demolition Hammer Kit V4.0
6 For technical questions call1-800-665-8685
•Do not modify the provided plug. If it will not fit the receptacle, have the
proper receptacle installed by a qualified electrician.
•Check with a qualified electrician or service person if you do not completely
understand the grounding instructions, or if you are not sure the tool is
properly grounded.
GROUNDED TOOLS: TOOLS WITH 3-PRONG PLUGS
•Tools marked with Grounding
Required have a 3-wire cord and 3-
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.)
•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.
•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.
DOUBLE INSULATED TOOLS:
TOOLS WITH TWO-PRONG PLUGS
•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

V4.0 120V1,000 BPM Demolition Hammer Kit 8957425
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the National Electrical Code. (See Figure B.)
•Double insulated tools may be used in either of the 120 volt outlets shown
in the following illustration.
EXTENSIONCORDS
•Use a proper extension cord. Make sure your extension cord is in good
condition. When using an extension cord, be sure to use one heavy enough
to carry the current your product will draw. An undersized cord will cause a
drop in line voltage, resulting in loss of power and cause overheating.
•Be sure your extension cord is properly wired and in good condition.
Always replace a damaged extension cord or have it repaired by a qualified
person before using it. Protect your extension cords from sharp objects,
excessive heat and damp or wet areas.
•Grounded tools require a 3-wire extension cord. Double Insulated tools can
use either a 2- or 3-wire extension cord.
•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.
•The smaller the wire’s gauge number, the greater the capacity of the cord.
For example, a 14-gauge cord can carry a higher current than a 16-gauge
cord. Minimum extension cord wire size is shown in the following table:
MINIMUM WIRE SIZE OF EXTENSIONCORDS
NameplateAMPS
Cord Length
25' 50' 100' 150'
0-6 18 AWG 16 AWG 16 AWG 14 AWG
6-10 18 AWG 16 AWG 14 AWG 12 AWG
10-12
16 AWG
16 AWG
14 AWG
12 AWG
12-16
14 AWG
12 AWG
Not Recommended
•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.
•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

8957425 120V1,000 BPM Demolition Hammer Kit V4.0
8 For technical questions call1-800-665-8685
cord size.
•If you are using an extension cord outdoors, make sure it is marked with
the suffix Wto indicate it is acceptable for outdoor use.
•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.
•Protect your extension cords from sharp objects, excessive heat, and damp
or wet areas.
IDENTIFICATIONKEY
A. Main Handle
B. Switch
C. Fan Cover
D. Side Handle
E. Chisel Chuck
F. Front Cover
G. Aluminum Head
ASSEMBLY INSTRUCTIONS
WARNING! Make sure that the trigger is in the OFF position and unplug the
demolition hammer from its electrical outlet before performing any
procedure in this section.
CAUTION! The inserted tool may become hot during use. There is a risk of
burning your hands. Wear protective gloves when inserting or removingthe
tool from the holder.

V4.0 120V1,000 BPM Demolition Hammer Kit 8957425
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MOUNTING TOOL BITS
CAUTION! Before any work on the machine itself, pull the mainplug. Before
each use, clean the bit’s shank and lubricate.
BITS WITH GROOVES
1. Move the lock (2) to Fig 1
position. Insert the bit (1)
into the holder (3).
2. Move the lock back. Pull the
bit to check if it was locked.
3. When disassembling, move
the lock to Fig 1 position,
then pull out the bit from the
holder.
BITS WITH SHOULDER
IMPORTANT! The shank length
can be 160 mm or 6 10/33 inch (Length from shank end to the shoulder)
1. Move the lock (2) to Fig 3 position. Insert the bit (1) into the holder (3).
2. Move the lock to Fig 4 position. Bit can be locked. The shoulder position
should be between lock and holder.
3. Move the lock back. Pull the bit to check if it was locked.
4. When disassembling, move the lock to Fig 3 position, then pull out the bit
from the holder.
WARNING!
•Be sure the bit is secured in place before operation.
•When drilling or screwing into walls, ceilings, etc., make sure beforehand
that you will not damage any hidden electric cables. During this work, you
should not touch any metal parts of the machine; only touch the machine by
the plastic housing.
•Be sure no one is below you when using the tool in high locations.
•Always remove the plug from the power source before installing or
removing a bit or accessory from the chuck.

8957425 120V1,000 BPM Demolition Hammer Kit V4.0
10 For technical questions call1-800-665-8685
OPERATINGINSTRUCTIONS
WARNING!
•To reduce the risk of injury, always wear eye protection.
•Wear ear protection when using the hammer. Exposure to noise can cause
hearing loss.
•Wear heavy duty anti vibration gloves.
•Be sure the bit is secured in place before operation.
•Hold power tools by insulated gripping surfaces, when performing an
operation where the cutting tool may contact hidden wiring or its own cord.
•Always be sure you have a firm footing.
•Hold the tool firmly with both hands.
•Do not point the hammer at anyone in the area when operating. The bit
could fly out and seriously injure someone.
•Burn hazard. Do not touch the bit or parts close to the bit immediately after
operation; they will be extremely
•Use only well-sharpened bits that are in good condition and appropriate to
task.
•To prevent the bit from jamming, keep the motor running when pulling the
bit out of a completed hole.
POWER SOURCE
Ensure that the power source to be utilized conforms to the power
requirements, which are specified on the nameplate of the hammer.
POWER SWITCH
Ensure that the power switch is in the OFF position. If the plug is connected to a
power receptacle while the power switch is in ON position, the demolition
hammer will start operation immediately, which could cause a serious accident!
EXTENSION CORD
When the work area is removed from the power source, use an extension cord
of sufficient thickness and rated capacity. The extension cord should be kept as

V4.0 120V1,000 BPM Demolition Hammer Kit 8957425
Visitwww.princessauto.comfor more information 11
short as practicable.
SWITCH OPERATION
WARNING! Observe correct mains voltage. The
voltage of the power source must agree with the
voltage specified on the type plate of the power
tool.
•Switch on: press the switch towards (1)
direction
•Switch off: release the switch towards (2)
direction
For low temperatures, the machine reaches the full impact rate only after a
certain time.
This start-up time can be shortened by striking the chisel in the machine against
the floor one time.
AFTER EACHUSE
WARNING!
•Do not remove the chisel until it has cooled.
•Store the hammer in a dry and clean place.
•Keep the hammer away from children.
MAINTENANCE
WARNING!
•Do not use solvents to clean the hammer.
•Carbon brushes are consumable parts. When they become worn, they can
cause problems with the motor. Use an auto-stop carbon brush, which will
stop automatically when the carbon brush is worn, then replace the
brushes.
•If the power supply cord of this power tool is damaged, it must be replaced
and only by a qualified service technician.

8957425 120V1,000 BPM Demolition Hammer Kit V4.0
12 For technical questions call1-800-665-8685
Maintain the demolition hammer by adopting a program of conscientious repair
and maintenance in accordance with the following recommended procedures. It
is recommended that the general condition of any tool be examined before it is
used. Keep your tool in good repair. Keep handles dry, clean, and free from oil
and grease. The following chart is based on a normal operation schedule.
Inspectingthe tool
Sinceuseofadulltoolwill degrade efficiencyand
cause possible motormalfunction, sharpenor
replace the toolas soonas abrasionis noted.
Inspecting the mounting
screws
Regularly inspectall mounting screws and ensure
that they are properlytightened.Shouldany of the
screws be loose, retightenthemimmediately.
Failure to do so couldresultin serious hazard.
Maintaining the motor
Themotorunitwindingisthevery"heart"of the
powertool.Exercisedue care toensure thewinding
does not become damagedand/or wet with oil or
water.
Inspectingthe carbonbrush Themotoremployscarbonbrushes,whichare
consumable parts.When theybecomeworn to or
near the "wearlimit",it couldresultin motor
trouble.When anauto-stop carbon brush is
equipped,themotorwillatopautomatically.At that
time,The machine must be sent to customer
service formaintenance.
Cleaning Clean the machineregularly witha soft cloth,
preferablyafter each use. Solventsuchas gasoline,
thinner, alcohol etc..These kind of chemical
materials are not allowedto use,waterorsoapare
recommended!
Protecting theenvironment Do not disposeof powertoolstogetherwith
householdwaste material!
The machine, accessories andpackagingshould be
sorted forenvironmentalfriendly recycling

V4.0 120V1,000 BPM Demolition Hammer Kit 8957425
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PARTS DIAGRAM

8957425 120V1,000 BPM Demolition Hammer Kit V4.0
14 For technical questions call1-800-665-8685
PARTS LIST
#
DESCRIPTION
QT
Y
1
Chisel Chuck
1
2 Front Cover 1
3
Lockring
2
4 Spring ColumnPin 2
5 LockingLever 1
6 He×.Socket Bolt M14×70
(12.9)
4
7
Φ14 Spring Washer
4
8
Φ
14 Flat Washer 4
9
O Ring Φ77×Φ2.9
1
10 FluorineORing
Ф
39×
Ф
5 2
11 Impact Hammer 1
12 HammerRing 1
13
Shock AbsorptionFerrule
1
14 LockingRing 1
15 M14 SixNut 4
16 AluminumHead 1
17 He×.Socket Bolt M10×70
(12.9)
4
18
Φ
10 Spring Washer 4
19 Φ10 Flat Washer 4
20 FluorineORing
Ф
53.8x
Ф
6 2
21
Impact Piston
1
22 Cylinder 1
23
Piston Pin Φ14×61.5
1
24 Piston 1
25
Connecting RodAssembly
1
26 Needle Bearing202823 1
27
O RingФ100x3.1
1
28 CylinderSeat 1
29
O RingΦ87×Φ3.5
2
30
Decorative cover
1
31 HousingAssembly 1
32 Ball Bearing 6205DD 1
33
Final Gear
1
34 Palt Key 4×18 2
35
Φ24 Retaining Ring
1
36 PaperWasher 1
37 Ball Bearing 6004DD 1
38
Φ
42 Retaining Ring 1
39 DoubleTeeth Pin
Φ
16×50 1
40 Needle BearingHK1612 2
41
Doubleteeth
1
42 Gear Cover 1
43 Hex.Socket BoltM8×20
(12.9)
5
44
Hex.Socket BoltM8×25
(12.9) 6
45
Stop Block
1
46
Φ
5 Flat Washer 1
47 He×.Socket Bolt M5×12
(12.9)
1
48
Ball Bearing 6206RS
1
49
Crank Shaft
1
50
OilTank Cover
1
51 Deflating Valve 1
52 WoolBlock 1
53
BottomCover
1
51 Deflating Valve 1
52 WoolBlock 1

V4.0 120V1,000 BPM Demolition Hammer Kit 8957425
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53 BottomCover 1
51 Deflating Valve 1
52
WoolBlock
1
54
Stator Assembly
1
55 Stator220-240V 1
55 Stator 110-120V 1
56
Positioning Bracket
1
57 Armature220-240V 1
57
Armature110-120V
1
58 Tapping ScrewST4.8×70 2
59 Carbon Brush 220-240V 2
59 Carbon Brush 110-120V 2
60 Coil spring 2
61 Carbon Brush bracket
Subassembly
1
62 Machine ScrewM4×8 2
63 Fan 1
64 Bearing Cover 1
65
Ball Bearing 6301Z
1
66
He×.Socket Bolt M6×20
(12.9) 1
67 M12×1 Anti-Loosing Nut 1
68
Φ
37 Retaining Ring 1
69
Decorative cover
1
70
Cover
1
71
He×.Socket Bolt M6×15
(12.9) 4
72
Mandrel Subassembly
1
73
ShockAbsorptionSpring
1
74
Support
2
75 SideHandleSupport 1
76
Tapping ScrewST4.2×16
9
77 Side Handle Cover 1
78 Side Handle Assembly 1
79
M10 Anti-Loosing Nut
2
80
Φ6 Flat Washer
8
81 HexSocket Bolt M6×35 4
82 Main HandleSupport 1
83
Side Handle Assembly Base
1
84 0.18μ
Η
ElectricityFeels 1
85
0.33μF ElectricCapacity
1
86 Switch Cover 1
87
Switch Trigger
1
88 Main Handle 1
89
He×.Socket Bolt M6×50
4
91 Main HandleCover 1
92
Switch
1
93 Cord Clip 1
94 Cord Armor 1
95
Cord
1
96
Wire Cover
1
97 Screw sleeve 8
98
Φ
10 Flat Washer 2
99 Screws Ring
Ф
11×
Ф
9×
Ф
7×20
8
10
0
Screws Ring
Ф11×Ф9×Ф7×15
4
80
1 Front CoverSubassembly 1
80
2 CylinderSubassembly 1
80
3
Piston and Connecting
Subassembly
1
80
4
HousingSubassembly 1

8957425 120V1,000 BPM Demolition Hammer Kit V4.0
16 For technical questions call1-800-665-8685

V4.0 120V1,000 BPM Demolition Hammer Kit 8957425
Visitwww.princessauto.comfor more information 17

8957425 120V1,000 BPM Demolition Hammer Kit V4.0
18 For technical questions call1-800-665-8685

V 4,0 8957425
Vous devezlire et comprendretoutes les instructionsavant d'utiliser l'appareil.
Conservez ce manuel afinde pouvoirle consulterplustard.
Manuel d'utilisateur
Troussede marteau de
démolition,1 000 coups/min, 120 V

8957425 Trousse de marteau de démolition, 1 000 coups/min, 120 V V 4,0
2 En cas de questionstechniques,appelez le 1-800-665-8685
SPÉCIFICATIONS
Moteur 120 V,60 Hz,15 A
Mandrin
Hexagonal
Vitesse d’impact 1 000 coups/min
Porte-outils Hexagonalde 1 1/8 po
Énergiede frappement 62J
SÉCURITÉ
AVERTISSEMENT ! Veuillez lire et comprendre toutes les instructions avant
d'utiliser cet outil. L'utilisateur doit respecter les précautions de base
lorsqu'il utilise cet outil afin de réduire le risque de blessure ou de
dommage à l'équipement.
Conservez ce manuel qui contient les avertissements de sécurité, les
précautions, les instructions de fonctionnement ou d'inspection et d'entretien.
CONSIGNES DE SÉCURITÉIMPORTANTES
•Veuillez lire et vous assurer de comprendre toutes les instructions. Le non-
respect de toutes les instructions indiquées ci-dessous peut causer des
blessures graves ou des dommages matériels.
•Les avertissements, les mises en garde et les instructions dans ce manuel
ne peuvent couvrir toutes les conditions ou situations pouvant se produire.
Faites preuve de bon sens et de prudence lors de l’utilisation de cet outil.
Soyez toujours conscient de l’environnement et assurez-vous que l’outil est
utilisé de manière sécuritaire et responsable.
•Ne permettez pas aux personnes d’utiliser ou d’assembler le produit tant
s’ils n’ont pas lu ce manuel et acquis une compréhension totale du
Troussede marteau de
démolition,1 000 coups/min, 120 V