Hammerhead HAHD075 User manual

7.5 AMP HAMMER DRILL
MODEL HAHD075
ATTACH YOUR RECEIPT HERE
Serial Number _____________________ Purchase Date ______________________
Questions, problems, missing parts? Before returning to your retailer, call
our customer service department at 1-877-888-1880, 8:30 a.m. – 8:00 p.m.
EST (Monday – Friday) & 10:00 a.m. – 6:00 p.m. EST (Saturday and Sunday).

2 7.5 AMP HAMMER DRILL
TABLE OF CONTENTS
Product Specifications ....................................................3
Safety Information .......................................................3
Preparation.............................................................9
Package Contents.......................................................10
Operating Instructions ...................................................11
Care and Maintenance ...................................................16
Extension Cords ........................................................16
Troubleshooting ........................................................17
Warranty..............................................................18
WARNING
• Some dust created by power sanding, sawing, grinding, drilling and other construction
activities contains 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, cement, and other masonry products.
— Arsenic and chromium from chemically-treated lumber.
• Your risk from these exposures varies, depending upon how often you do this type of
work. To reduce your exposure to these chemicals:
— Work in a well-ventilated area.
— Work with approved safety equipment, such as dust masks that are specially designed
to filter out microscopic particles.
— Avoid prolonged contact with dust from power sanding, sawing, grinding, drilling, and
other construction activities. Wear protective clothing and wash exposed areas with soap
and water. Allowing dust to get into your mouth or eyes or to lie on the skin may promote
absorption of harmful chemicals.

7.5 AMP HAMMER DRILL 3
SAFETY INFORMATION
PRODUCT SPECIFICATIONS
COMPONENT SPECIFICATIONS
Motor 120V~, 60Hz, 7.5A
No-Load Speed 0-3,000/min
Hammer speed 0-48,000BPM
Chuck Capacity 1/2" (13mm)
Maximum drilling capacity:
In wood 1-3/8" (34 mm)
In metal 1/2" (13 mm)
In concrete 5/8" (16 mm)
Please read and understand this entire manual before attempting to assemble or operate
this product. If you have any questions regarding the product, please call Hammerhead
customer service at 1-877-888-1880, 8:30 a.m. – 8:00 p.m. EST (Monday – Friday) &
10:00 a.m. – 6:00 p.m. EST (Saturday and Sunday).
WARNING
The operation of any power tool can result in foreign objects being thrown into your eyes,
which can result in severe eye damage. Before beginning power-tool operation, always
wear safety goggles or safety glasses with side shields and a full-face shield, when
needed. We recommend using a wide vision safety mask over eyeglasses or standard
safety glasses with shields. Always use eye protection marked to comply with ANSI Z87.1.
DANGER
People with electronic devices, such as 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.
Know the Tool
To operate this tool, carefully read this manual and all labels affixed to the hammer drill
before using it. Keep this manual available for future reference.
Some of the following symbols may be used on this hammer drill. Please study them and
their meaning. Proper interpretation of these symbols will allow you to operate the tool
better and more safely.

4 7.5 AMP HAMMER DRILL
SAFETY INFORMATION
SYMBOL DEFINITION SYMBOL DEFINITION
VVolts n0No-load Speed
AAmps /min Revolutions, Strokes, Beats or
Impacts per Minute
Hz Hertz Class II Construction
WWatts Alternating Current
Caution
Always wear safety goggles
or safety glasses with side
shields and a full face shield
when operating this product.
Read the instructions
This symbol designates
that this tool is listed by the
Intertek Testing Services, to
United States Standards.
IMPORTANT: This tool should only be serviced only by a qualified service technician.
IMPORANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS-This manual contains important safety and operating
instructions for Hammer Drill Model HAHD075
DANGER
To reduce the risk of fire or electric shock, carefully follow these operating instructions.
General Power Tool Safety Warnings
WARNING
Read all safety warnings, instructions, illustrations and specifications provided with
this power tool. Failure to follow all instructions listed below may result in electric shock,
fire and/or serious injury.
SAVE ALL WARNINGS AND INSTRUCTIONS FOR FUTURE REFERENCE.
The term “power tool” in the warnings refers to your mains-operated (corded) power tool or
battery-operated (cordless) power tool.
Work area safety
• Keep work area clean and well lit. Cluttered or dark areas invite accidents.

7.5 AMP HAMMER DRILL 5
SAFETY INFORMATION
• 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.
• Keep children and bystanders away while operating a power tool. Distractions can
cause you to lose control.
Electrical safety
• Power tool plugs must match the outlet. Never modify the plug in any way. Do not
use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and
matching outlets will reduce risk of electric shock.
• Avoid body contact with earthed or grounded surfaces, such as pipes, radiators,
ranges and refrigerators. There is an increased risk of electric shock if your body is
earthed or grounded.
• Do not expose power tools to rain or wet conditions. Water entering a power tool will
increase the risk of electric shock.
• Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the
power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged
or entangled cords increase the risk of electric shock.
• When operating a power tool outdoors, use an extension cord suitable for outdoor
use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
• If operating a power tool in a damp location is unavoidable, use a ground fault
circuit interrupter (GFCI) protected supply. Use of a GFCI reduces the risk of electric
shock.
Personal safety
• Stay alert, watch what you are doing and use common sense when operating a
power tool. Do not use a power tool while you are tired or under the influence of
drugs, alcohol or medication. A moment of inattention while operating power tools may
result in serious personal injury.
• Use personal protective equipment. Always wear eye protection. Protective
equipment such as a dust mask, non-skid safety shoes, hard hat or hearing protection
used for appropriate conditions will reduce personal injuries.
• Prevent unintentional starting. Ensure the switch is in the off-position before
connecting to power source and/or battery pack, picking up or carrying the tool.
Carrying power tools with your finger on the switch or energising power tools that have
the switch on invites accidents.
• Remove any adjusting key or wrench before turning the power tool on. A wrench or
a key left attached to a rotating part of the power tool may result in personal injury.

6 7.5 AMP HAMMER DRILL
SAFETY INFORMATION
• Do not overreach. Keep proper footing and balance at all times. This enables better
control of the power tool in unexpected situations.
• Dress properly. Do not wear loose clothing or jewellery. Keep your hair and clothing
away from moving parts. Loose clothes, jewellery or long hair can be caught in moving
parts.
• If devices are provided for the connection of dust extraction and collection
facilities, ensure these are connected and properly used. Use of dust collection can
reduce dustrelated hazards.
• Do not let familiarity gained from frequent use of tools allow you to become
complacent and ignore tool safety principles. A careless action can cause severe
injury within a fraction of a second.
Power tool use and care
• Do not force the power tool. Use the correct power tool for your application. The
correct power tool will do the job better and safer at the rate for which it was designed.
• Do not use the power tool if the switch does not turn it on and off. Any power tool
that cannot be controlled with the switch is dangerous and must be repaired.
• Disconnect the plug from the power source and/or remove the battery pack,
if detachable, from the power tool before making any adjustments, changing
accessories, or storing power tools. Such preventive safety measures reduce the risk
of starting the power tool accidentally.
• Store idle power tools out of the reach of children and do not allow persons
unfamiliar with the power tool or these instructions to operate the power tool.
Power tools are dangerous in the hands of untrained users.
• Maintain power tools and accessories. Check for misalignment or binding of
moving parts, breakage of parts and any other condition that may affect the
power tool’s operation. If damaged, have the power tool repaired before use. Many
accidents are caused by poorly maintained power tools.
• Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp
cutting edges are less likely to bind and are easier to control.
• Use the power tool, accessories and tool bits etc. in accordance with these
instructions, taking into account the working conditions and the work to be
performed. Use of the power tool for operations different from those intended could
result in a hazardous situation.
• Keep handles and grasping surfaces dry, clean and free from oil and grease.
Slippery handles and grasping surfaces do not allow for safe handling and control of the
tool in unexpected situations.

7.5 AMP HAMMER DRILL 7
SAFETY INFORMATION
Service
• Have your power tool serviced by a qualified repair person using only identical
replacement parts. This will ensure that the safety of the power tool is maintained.
Safety Warnings For Hammer Drills
Safety instructions for all operations:
• Wear ear protectors when impact drilling. Exposure to noise can cause hearing loss.
Use the auxiliary handle(s), if supplied with the tool. Loss of control can cause personal
injury.
• Hold the power tool by insulated gripping surfaces, when performing an operation
where the cutting accessory may contact hidden wiring or its own cord. Cutting
accessory contacting a “live” wire may make exposed metal parts of the power tool
“live” and could give the operator an electric shock.
Safety instructions when using long drill bits:
• Never operate at higher speed than the maximum speed rating of the drill bit. At
higher speeds, the bit is likely to bend if allowed to rotate freely without contacting the
workpiece, resulting in personal injury.
• Always start drilling at low speed and with the bit tip in contact with the
workpiece. At higher speeds, the bit is likely to bend if allowed to rotate freely without
contacting the workpiece, resulting in personal injury.
• Apply pressure only in direct line with the bit and do not apply excessive pressure.
Bits can bend causing breakage or loss of control, resulting in personal injury.
Additional Safety Warnings
• Use clamps or another practical way to secure and support the workpiece to a
stable platform. Holding the work by hand or against your body leaves it unstable and
may lead to loss of control.
• Do not drill, fasten or break into existing walls or other blind areas where electrical
wiring may exist. If this situation is unavoidable, disconnect all fuses or circuit breakers
feeding this worksite.
• Always wear safety goggles or eye protection when using this tool. Use a dust
mask or respirator for applications which generate dust.
• Use thick cushioned gloves and limit the exposure time by taking frequent rest
periods. Vibration caused by hammer-drill action may be harmful to your hands and
arms.
• Secure the material being drilled. Never hold it in your hand or across legs.
Unstable support can cause the drill bit to bind causing loss of control and injury.

8 7.5 AMP HAMMER DRILL
SAFETY INFORMATION
• Never leave the trigger locked “ON”. Before plugging the tool in, check that the
trigger lock is “OFF”. Accidental start-ups could cause injury.
• Position the cord clear of rotating bit. Do not wrap the cord around your arm or
wrist. If you lose control and have the cord wrapped around your arm or wrist it may
entrap you and cause injury.
• Position yourself to avoid being caught between the tool or side handle and walls
or posts. Should the bit become bound or jammed in the work, the reaction torque of the
tool could crush your hand or leg.
• If the bit becomes bound in the workpiece, release the trigger immediately,
reverse the direction of rotation and slowly squeeze the trigger to back out the
bit. Be ready for a strong reaction torque. The drill body will tend to twist in the opposite
direction as the drill bit is rotating.
• Do not grasp the tool or place your hands too close to the spinning chuck or
drill bit. Your hand may be lacerated. Do not use the switch “Lock-On” feature in
situations where drill bit binding is likely. (For example: just before the bit is ready
to break through the material, anytime when using a “Hole Saw”, auger bits . . . . .
. . . etc.) When the bit binds, the drill’s body will twist or kick-back in opposite direction
and the release of the trigger “Lock-On” may be difficult.
• Be aware of the location and setting of the switch “Lock-On” button. If the switch is
locked “ON” during the use, be ready for emergency situations to switch it “OFF”, by first
pulling the trigger then immediately releasing it without pressing the “Lock-On” button.
• When installing a drill bit, insert the shank of the bit well within the jaws of the
chuck. If the bit is not inserted deep enough, the grip of the jaws over the bit is reduced
and the loss of control is increased.
• Do not use dull or damaged bits and accessories. Dull or damaged bits have a
greater tendency to bind in the workpiece.
• When removing the bit from the tool avoid contact with skin and use proper
protective gloves when grasping the bit or accessory. Accessories may be hot after
prolonged use.
• Check to see that keys and adjusting wrenches are removed from the drill before
switching the tool “ON”. Keys or wrenches can fly away at high velocity striking you or
a bystander.
• Do not run the drill while carrying it at your side. A spinning drill bit could become
entangled with clothing and injury may result. GFCI and personal protection devices like
electrician’s rubber gloves and footwear will further enhance your personal safety.
• Do not use AC only rated tools with a DC power supply. While the tool may appear to
work, the electrical components of the AC rated tool are likely to fail and create a hazard
to the operator.

7.5 AMP HAMMER DRILL 9
SAFETY INFORMATION
• Keep handles dry, clean and free from oil and grease. Slippery hands cannot safely
control the power tool.
• Develop a periodic maintenance schedule for your tool. When cleaning a tool be
careful not to disassemble any portion of the tool since internal wires may be
misplaced or pinched or safety guard return springs may be improperly mounted.
Certain cleaning agents such as gasoline, carbon tetrachloride, ammonia, etc. may
damage plastic parts. Risk of injury to user. The power cord must only be serviced by a
Factory Service Center or Authorized HAMMERHEAD Service Station.
PREPARATION
Before attempting to use the Hammer Drill, familiarize yourself with all of its operating
features and safety requirements.

10 7.5 AMP HAMMER DRILL
PACKAGE CONTENTS
AF
C
E
G
H
D
B
PARTS DESCRIPTION
AKeyless chuck
BVariable speed trigger switch
CLock-on button
DVariable speed dial
EForward/reverse control
FImpact/Drill switch
GAuxiliary handle
HDepth gauge
I3pc drill bit for steel: 1/8" , 3/16" , 5/16"
3pc drill bit for concrete:1/4" , 5/16", 3/8"
I

7.5 AMP HAMMER DRILL 11
OPERATING INSTRUCTIONS
1. Installing Bits
WARNING: Always ensure that the
hammer drill is switched off and plug is
removed from the power point before
making any adjustment.
When selecting a drill bit, use the right
type for your job. For best performance,
always use sharp drill bit.
You need two hands to operate a double-
sleeve keyless chuck.
a) To open the chuck jaws, firmly grasp
rear part of the chuck with one hand,
while turning the front part with the
other hand in the counterclockwise
direction to loosen it. Insert the drill
bit deeply into the chuck ,and then
center the bit in the chuck jaws.
b) To close the chuck jaws,firmly grasp
rear part of the chuck with one hand,
while turning the front part with the
other hand in the clockwise direction
to tighten it.
c) Remove the drill bit in reverse order.
NOTICE: The chucks of reversible drills are
always fixed by a screw with a left hand thread. The screw must be loosed before the chuck can
be removed if necessary. To loosen the screw, turn it in a clockwise direction.
2. Forward/reverse adjustment
For forward (clockwise) rotation, push the
forward /reverse switch to the left position.
a) For reverse (counterclockwise)
rotation, push the forward/reverse
switch to the right position.
Although an interlock prevents
reversing the tool while the motor
is running, allow it to come to a
full stop before reversing.
1
2
1
1
2

12 7.5 AMP HAMMER DRILL
OPERATING INSTRUCTIONS
WARNING: If forward/reverse switch is on the central position, the tool can not be
switched on.
3. Auxiliary Handle
An auxiliary handle is packed with the
drill for ease of operation and to help
prevent loss of control. The handle can
be positioned and locked into any of 12
positions, 360° around the collar mount.
It can also be mounted on the opposite
side for left hand use.
To install the handle:
a) Loosen the handle assembly
by turning the handle
counterclockwise.
b) Slide the handle assembly onto
the collar mount.
Rotate the handle assembly to the desired operating position, then push the handle inward
until it engages in the desired position.
a) Securely tighten the auxiliary by turning the handle clockwise.
To reposition the handle:
a) Rotate the lower portion of auxiliary handle counter-clockwise.
b) Push the handle forward until it disengages from the locking teeth in the collar
mount.
c) Move the handle to the desired position.
d) Push the handle inward until it engages in the desired position.
e) Securely tighten the auxiliary handle by rotating it clockwise.
3

7.5 AMP HAMMER DRILL 13
OPERATING INSTRUCTIONS
4. Depth gauge
Change the position of the depth gauge,
turn the grip of the handle anti-clockwise
until the depth gauge is loose enough to
slide in the hole. Set the depth, checking
the depth with a steel ruler for most
accurate measurement and then turn the
handle grip clockwise to tighten both the
depth gauge and the auxiliary handle in
the required position.
5. Selecting the impact/drill mode
The impact/drill switch should be set
according to the type of action required.
The tool has two settings:
a) Drill mode: For drilling into wood
and metal. Use standard drill bits.
b) Impact mode: For drilling into
stone and masonry. Use masonry
drill bits.
4
8
5

14 7.5 AMP HAMMER DRILL
OPERATING INSTRUCTIONS
6. Adjusting speed
This tool has a variable speed trigger
switch which can reach higher speed
with increased trigger pressure.
Speed is controlled by the pressure to
the variable speed trigger switch. The
variable speed feature is particularly
useful when starting drilling. It also
enables you to select the best speed for a
particular application.
To limit the maximum speed of the tool,
rotate the variable speed dial until the
desired setting is achieved.
Turn the dial to the “+” direction to increase the speed and to the “-” direction to decrease
the speed.
NOTICE: It is recommended to use the variable speed feature for a short time only. Do not
continuously operate the tool at different speeds. It may damage the switch.
7. Start drilling
Start the tool by squeezing the variable
speed trigger switch.
Release the trigger to stop the tool.
If you press the lock on button while the
trigger switch is depressed, the switch
is kept in the operating position. This is
convenient when continuous operating
for extended periods of time is required.
To release the lock on button, press and
release the trigger switch.
8. Hole drilling
When attempting to drill a large diameter hole, it is sometimes best to start with a smaller
drill bit then work up to the required size. This prevents overloading the drill.
WARNING: Many accidents occur because of unforeseeable situations. Please pay
attention that drilling-out a small hole may cause the drill bit to jam in the hole, espe-
cially when drilling metal.
6
1
2
7

7.5 AMP HAMMER DRILL 15
OPERATING INSTRUCTIONS
Remember to use a “wood-pecker” action on deep holes to allow the swarf to be ejected
from the hole.
If the drill bit snags, switch off immediately to prevent permanent damage to the drill.
Try running the drill in reverse to remove the bit.
Keep the drill in line with the hole. Ideally, the drill bit should enter at right angles to the
work. If the angle is changed during drilling, this could cause the bit to snap off blocking
the hole and perhaps causing injury.
Reduce pressure as the drill is about to break through the item being drilled.
Don’t force the drill, let it work at its own pace.
Keep the drill bit sharp.
9. Drilling wood
For maximum performance when drilling larger holes, use auger bits or spade bits for wood
drilling.
Set the tool to the drill mode.
Begin drilling at a very low speed to prevent the bit from slipping off the starting point.
Increase the speed as it bites into the wood. When drilling through holes, place a block of
wood behind the work piece to prevent ragged or splintered edges on the back of the hole.
10. Drilling metal
For maximum performance, use HSS drill bits for metal drilling.
Set the tool to the drill mode.
Mark off the centre of the hole using a centre punch.
Use a suitable lubricant for the material you are working on.
Begin drilling at a very low speed to prevent the bit from slipping off the starting point.
Always clamp sheet metal. Support thin metal with a block of wood to avoid distorting it.
11. Drilling Masonry
For maximum performance, use high quality carbide-tipped masonry drill bits when drilling
holes in brick, tile, concrete etc. Use the drilling setting initially then revert to the hammer
action once the holes are established.
Apply light pressure and medium speed for best results in brick.
Apply additional pressure and high speed for hard materials such as concrete.
When drilling holes in tile, practice on a scrap piece to determine the best speed and pressure.
NOTE: Reverse rotation during impact drilling may damage the drill and drill bit.

16 7.5 AMP HAMMER DRILL
CARE AND MAINTENANCE
WARNING:
• Always disconnect the device before performing any adjustment or maintenance
operation. if the replacement of the supply cord is necessary, this has to be done by the
manufacturer or his agent in order to avoid a safety hazard.
• Disconnect from the power supply immediately if the supply cord is damaged.
Take care not to expose this tool to the rain.
• If the carbon brushes need to be replaced, have this done by a qualified repair
person (always replace the two brushes at the same time)
1. Cleaning
• Avoid using solvents when cleaning plastic parts. Most plastic parts are susceptible to
damage from various types of commercial solvents and may be damaged by their use.
Use clean cloths to remove dirt, carbon dust, etc.
2. Lubrication
• All the bearings in this tool are lubricated with a sufficient amount of high grade lubricant
for the life of the unit under normal operating conditions, therefore no further lubrication
is required.
EXTENSION CORDS
WARNING: If an extension cord is necessary, a cord with adequate size conductors
that is capable of carrying the current necessary for your tool must be used. This will
prevent excessive voltage drop, loss of power or overheating. Grounded tools must use
3-wire extension cords that have 3-prong plugs and receptacles.
NOTICE: The smaller the gauge number, the heavier the cord.
RECOMMENDED SIZES OF EXTENSION CORDS 120 VOLT ALTERNATING CURRENT
TOOLS
Tool’s Ampere Rating Cord Size in A.W.G Wire sizes in mm2
Cord length in feet
25 50 100 150
Cord length in meters
15 30 60 120
3-6
6-8
8-10
10-12
12-16
18 16 16 14
18 16 14 12
18 16 14 12
16 16 14 12
14 12 - -
0.75 0.75 1.5 2.5
0.75 1.0 2.5 4.0
0.75 1.0 2.5 4.0
1.0 2.5 4.0 -
- - - -

7.5 AMP HAMMER DRILL 17
TROUBLESHOOTING
Suspected malfunctions are often due to causes that the users can fix themselves.
Therefore, check the product using this section. In most cases the problem can be solved
quickly.
WARNING: Only perform the steps described within these instructions! All further
inspection, maintenance and repair work must be performed by an authorised service
centre or a similarly qualified specialist if you cannot solve the problem yourself!
PROBLEM POSSIBLE CAUSE SOLUTION
Product does not
start.
Not connected to power supply. Connect to power supply.
Power cord or plug is defective. Have the tool serviced by an
Authorized Service Center.
Other electrical defect to the
product.
Have the tool serviced by an
Authorized Service Center.
Product does not
reach full power.
Extension cord not suitable for
operation with this product
Use a proper extension cord
Power source (e.g. generator) has
too low voltage
Connect to another power
source
Air vents are blocked. Clean the air vents
Unsatisfactory
result
Drill bit is worn Replace with a new one
Drill bit not suitable for workpiece
material.
Use proper drill bit.

18 7.5 AMP HAMMER DRILL
WARRANTY
This Hammer drill is warranted to the original purchaser from the original purchase date for
24 Months, Hammerhead consumer portable power tool models will be free from defects in
material or workmanship for a period of ninety days if the tool is used for professional use.
Please retain your receipt.
This Hammer drill is warranted to the original user to be free from defects in material
and workmanship. If you believe that the Hammer drill is defective at any time during the
specified warranty period, call HAMMERHEAD support at 1-877-888-1880 to speak with a
customer service agent. This warranty does not cover: (1) Part failure due to normal wear or
tool abuse; (2) any parts have been altered or modified by anyone other than an authorized
HAMMERHEAD personnel.
This warranty excludes bits, bulbs and accessories. This warranty gives you specific legal
rights, and you may also have other rights that vary from state.
© Chervon North America, 1203 E. Warrenville Rd, Naperville, IL 60563.