18 VOLT CORDLESS
HAMMER DRILL KIT
Model 91176
ASSEMBLY AND OPERATING INSTRUCTIONS
3491 Mission Oaks Blvd., Camarillo, CA 93011
©
®
Copyright 2004 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.
For technical questions, please call 1-800-444-3353.
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ELECTRICAL SAFETY
4.
Grounded adapters/chargers must be plugged into an outlet properly in
stalled 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 Adapter/Charger should
electrically malfunction or break down, grounding provides a low resistance path
to carry electricity away from the user.
5.
6.
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.
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.
8.
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 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 immedi-
ately. 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.
11.
Stay alert. Watch what you are doing, and use common sense when oper-
ating a power tool. Do not use a power tool while tired or under the influ-
ence of drugs, alcohol, or medication. A moment of inattention while operat-
ing power tools may result in serious personal injury.
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.
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12.
13.
14.
15.
Avoid accidental starting. Be sure the Trigger is off before plugging
in. Carrying power tools with your finger on the Trigger, or adding a battery
with the Trigger depressed, invites accidents.
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.
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.
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.
18.
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.
Do not use the power tool if the Trigger does not turn it on or off.
Any tool that cannot be controlled with the Trigger is dangerous and must
be replaced.
19.
20.
21.
Disconnect the Power Cord Plug from the power source before making any
adjustments, changing batteries, or storing the Charger.
Store idle tools out of reach of children and other untrained persons. Tools
are dangerous in the hands of untrained users.
Maintain tools with care. Keep tools clean and bits sharp. Properly
maintained tools and sharp bits 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 main-
tained tools.
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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.
25.
Tool service must be performed only by qualified repair personnel. Service
or maintenance performed by unqualified personnel could result in a risk of injury.
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.
2.
Maintain labels and nameplates on the Hammer Drill. These carry impor-
tant information. If unreadable or missing, contact Harbor Freight Tools for a
replacement.
Always wear safety impact eye goggles and heavy work gloves when using
the Hammer Drill. Using personal safety devices reduce the risk for injury.
Safety impact eye goggles and heavy work gloves are available from Harbor
Freight Tools.
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.
5.
6.
When using a handheld power tool, always maintain a firm grip on the tool
with both hands to resist starting torque.
Avoid unintentional starting. Make sure you are prepared to begin work
before turning on the Hammer Drill.
Do not force the Hammer Drill. This tool will do the work better and safer at
the speed and capacity for which it was designed.
SKU 91176
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7.
8.
Always remove the Battery Pack (14) before operation, inspection,
maintenance, or cleaning procedures.
Know what you are drilling into. When drilling into a structure, make sure no
electrical wires, cables, or plumbing is behind the surface.
9.
WARNING! Some dust created by power sanding, sawing, grinding, drilling,
and other construction activities, contain chemicals known (to the State of Cali-
fornia) to cause cancer, birth defects or other reproductive harm. Some ex-
amples 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.)
10.
WARNING! People with pacemakers should consult their physician(s)
before using this product. Electromagnetic fields in close proximity to a heart
pacemaker could cause interference to or failure of the pacemaker.
In addition, people with pacemakers should adhere to the following:
- Avoid operating power tools alone.
- Don’t use a power tool with the power switch locked on.
- If powered via a power cord be certain that the tool is properly grounded. A ground
fault interrupt (GFCI) system is also a good precaution. This inexpensive device is
a good safety measure because it prevents a sustained electrical shock.
- Properly maintain and inspect all tools before use to avoid electrical shock.
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GROUNDING
WARNING!
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.
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 elec-
tric shock. (See Figure A.)
2.
3.
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.)
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
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DOUBLE INSULATED TOOLS: TOOLS WITH TWO PRONG PLUGS
4.
5.
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. (See Figure B.)
Double insulated tools may be used in either of the 120 volt outlets shown in the
following illustration. (See Figure B.)
FIGURE B
EXTENSION CORDS
1.
2.
Grounded tools require a three wire extension cord. Double Insulated tools
can use either a two or three 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.
(See Figure C, next page.)
3.
4.
5.
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.)
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.)
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.)
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6.
7.
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.
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
EXTENSION CORD LENGTH
AMPERES
(At Full Load)
25 FEET
50 FEET
75 FEET
100 FEET
150 FEET
0 - 2.0
18
18
18
18
18
14
12
18
18
18
16
14
12
10
16
16
16
14
12
10
-
16
14
14
12
10
-
16
14
12
12
-
2.1 - 3.4
3.5 - 5.0
5.1 - 7.0
7.1 - 12.0
12.1 - 16.0
16.1 - 20.0
-
-
-
*Based on limiting the line voltage drop
to five volts at 150% of the rated amperes.
FIGURE C
SYMBOLOGY
Double Insulated
Canadian Standards
Association
Underwriters
Laboratories, Inc.
Volts Alternating Current
V ~
Amperes
A
n
No Load Revolutions
per Minute (RPM)
o
xxxx/min.
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UNPACKING
When unpacking, check to make sure all the parts shown on the Parts List on page 14
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.
OPERATING INSTRUCTIONS
NOTE: For additional information regarding the parts listed in the following pages, refer
to the Assembly Diagram on page 15.
Battery Pack (14) and Adapter (20) Use
1. Plug the Adapter power cord into an outlet. When the Adapter (20) is plugged in, but
not connected to the battery, both lights should be lit (if this is not happening
exchange the adapter).When the battery is connected only the red light should be
lit. When the battery is fully charged the red light should go out and the green light
should come on. This may take up to 5 hours
2. Slide the Adapter into the slot on the top of the Battery Pack (14) until it clicks into
place. To remove the Adapter, press the release button on the Battery Pack (14) and
slide the Adapter (20) out. The Battery Pack (14) needs an initial charge of
approximately 5 hours. After the initial charge, recharge the unit for approximately 3
to 5 hours. Never charge the battery more than 5 hours. See FIGURES 1 and 3.
3. To check the power level on the Battery Pack (14), press the TEST button on the
Battery Pack (14). See FIGURE 2. Always after charging, use the TEST button to
make sure a fully lit green light is on, showing a fully charged battery. When pushing
the TEST button, if the lights are partially lit, that indicates a partial charge. When
fully lit, Red = low charge, Yellow = 1/2 charge, Green = Full Charge. Test the Battery
Pack periodically during operation and charge as needed.
Note: These lights show the approximate level of charge.
4. To load the Battery Pack (14) onto the Hammer Drill, just slide it along the bottom of
the Base (13/17) until it clicks into place. Press the release button to remove the
Battery Pack (14). See FIGURE 3.
FIGURE 3
FIGURE 1
Battery Pack (14)
State of
Charge LEDs
Adapter (20)
Base (13/17)
FIGURE 2
Battery
Pack (14)
Green Yellow Red
Close-up of
State of Charge LEDs
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REV 12/04 REV 11/05
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OPERATING INSTRUCTIONS (Continued)
FIGURE 4
Torque Indicator Arrow
Torque Settings
Variable Speed Switch (5)
Jaws
Front Chuck (1)
Section
Rear Chuck (1)
Section
Reverse Switch (6)
Trigger (16)
Driver Bit held in slot
Strap (12)
Battery Pack (14)
NOTE: Always switch to a fresh battery when tool performance begins to diminish.
Severe heat is most destructive to a battery; the more heat generated, the faster the
battery loses power. A battery that gets too hot can be permanently damaged. Never
over-discharge a battery by continuing to pull the tool trigger. When tool performance
begins to diminish, stop the tool, recharge the battery, and use a fresh battery for opti-
mal performance.
1. CAUTION: Always make sure the Battery Pack (14) is not attached to the Hammer
Drill prior to making any adjustments and adding or removing bits to the tool.
2. Determine the size bit you will use. With one hand, hold the rear section of the
Chuck (1) firmly. With the other hand, turn the front section of the Chuck (1)
counterclockwise to loosen the Chuck (1) and open the Jaws. See FIGURE 4.
Insert the non-cutting end of the bit into the Jaws at least 1/4”. Holding the rear
section of the Chuck (1) firmly, turn the front section of the Chuck (1) clockwise to
tighten the Chuck (1) and close the Jaws. Make sure the bit is securely held in the
Jaws of the Chuck (1) by putting on a thick work glove and pulling on the bit.
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ASSEMBLY AND OPERATING INSTRUCTIONS (Continued)
3. Set the speed by adjusting the Variable Speed Switch (5) to either 1 (low) or 2 (high).
High speed is generally used for drilling applications and low speed is generally used
for screw driving applications. See FIGURE 5.
4. Set theTorque by aligning the desiredTorque
setting with the Torque Indicator Arrow. See
FIGURE 5. There are seven Torque setting
icons. They range from low driving settings,
to drill settings, to the impact or hammer drill
setting. When using the Hammer Drill set-
ting, line up the Hammer Icon with theTorque
Indicator Arrow as shown in FIGURE 5.
When using the Hammer Drill as a driver, use
the Driver Icons, also shown. The Drill Icon
is not shown in figure 5 but looks like a drill
bit. Higher torque settings (Drill Icon or Ham-
mer) will break the heads off of screws. Only
use the Drill setting to bore or drill into an
object. The Hammer Setting works well when
drilling/chipping into concrete. It is generally
used to bore holes with the purpose of break-
ing up material.
Torque Indicator Arrow Hammer Icon
Variable Speed Switch (5)
Driver Icons
FIGURE 5
Torque Settings
Approximate Torque Amount
(in inch-pounds)
Setting
5. Attach a Battery Pack (14) as explained on
page 10.
1
2
3
4
5
6
7
4.4-5.3
5.3-7.1
6. Holding the Hammer Drill clear of all ob-
stacles, test it by gently pulling on the Trig-
ger (16). If the bit turns clockwise, you are in
the drilling or driving position. If the bit turns
counterclockwise, you are in the reverse po-
sition (to remove a screw or help pull a bit
out of a workpiece). Adjust the Reverse
Switch (6) to change direction. Do not use
7.1-10.6
10.6-17.7
17.7-26.6
26.6-53.1
70.7
the Reverse Switch (6) when the drill is rotating.
DrillingTips
7. After the workpiece is secure, use an awl (not included) to punch a starter hole for the
drill bit. Place the bit on the workpiece prior to starting the Hammer Drill. Holding the
Hammer Drill with both hands, gently squeeze the Trigger (16) increasing your tension
on the Trigger (16) after you are sure the bit is securely in the pilot hole. After complet-
ing the task, stop the Hammer Drill, reverse the direction of the drill (see number 6
above), and gently squeeze the Trigger (6) as you back out the drill.
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ASSEMBLY AND OPERATING INSTRUCTIONS (Continued)
Driving Screws
8. After attaching the appropriate driver bit and securing your workpiece, use an awl
(not included) to punch in a pilot hole for the screw tip. Insert the driver bit in the
screw head and place the tip of the screw into the pilot hole. Slowly squeeze the
Trigger (16) allowing the screw to bite into the workpiece. Gradually add more power
by squeezing on Trigger (16). To remove screws, insert the driver bit in the screw
head and set the drill into reverse mode (see number 6 on page 12) and slowly
squeeze the Trigger (16) to back out the screw.
9. After using the Hammer Drill, remove the Battery Pack (14) and then remove the bit
from the Chuck (1) as explained on page 11.
Note: Periodically check the TEST button on the Battery Pack to check the battery
status.
INSPECTION, MAINTENANCE, AND CLEANING
1.
WARNING! Make sure the Trigger (16) of the Hammer Drill is in its “OFF”
position and that the tool does not have a Battery Pack (14) attached before
performing any inspection, maintenance, or cleaning procedures.
2. BEFORE EACH USE, inspect the general condition of the Hammer Drill. 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.
3. After each use, wipe the unit down with a lint free cloth.
4. Check that the Jaws of the Chuck (1) are clear of any dirt, debris, or grease.
5. Check bits carefully. Never use a cracked or bent bit. New bits are available at
Harbor Freight Tools.
6. Properly recycle or dispose of Ni-Cd battery when it no longer recharges. Do not
throw the battery in a fire. Contact your local hazardous waste disposal authority for
proper disposal.
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PARTS LIST
Part No.
1
Description
Chuck
2
3
Gear Box
Label
4
Right Housing
5
Variable Speed Switch
6
7
Reverse Switch
MOS Tube
8
9
Radiating Flange
Magnetic Block
Left Housing
Label
Strap
Left Base
Battery Pack
Revolving Base
Trigger
Right Base
Bit Set
10
11
12
13
14
15
16
17
18
19
20
Screw M3x14
AC/DC Adapter Charger Base
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 ORWARRANTY OF ANY KINDTOTHE BUYERTHAT
HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS
QUALIFIEDTO REPLACE ANY PARTS OFTHE 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.
SKU 91176
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ASSEMBLY DIAGRAM
The AC/DC Adapter and Charger Base (20) is not shown.
NOTE: Some parts are listed and shown for illustration purposes only, and are not
available individually as replacement parts.
SKU 91176
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