Drill Master 93440 User manual

3/8” CORDLESS DRILL
18 VOLT - KEYLESS CHUCK
Model 93440
ASSEMBLY AND OPERATING INSTRUCTIONS
Diagrams within this manual may not be drawn proportionally.
Due to continuing improvements, actual product may differ slightly from the product described herein.
Distributed exclusively by Harbor Freight Tools®.
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our website at: http://www.harborfreight.com
Read this material before using this product. Failure
to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright©2005 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 or replacement parts, please call 1-800-444-3353.
Revised 09e

SKU 93440 For technical questions, please call 1-800-444-3353. Page 2
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
WORK AREA
Keep your work area clean and well lit.1. Cluttered benches and dark areas invite
accidents.
Do not operate power tools in explosive atmospheres, such as in the2.
presence of ammable liquids, gases, or dust. Power tools create sparks which
may ignite the dust or fumes.
Keep bystanders, children, and visitors away while operating a power tool.3.
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.
PRODUCT SPECIFICATIONS
WARNING!
READ AND UNDERSTAND ALL INSTRUCTIONS
Failure to follow all instructions listed below may result in
electric shock, re, and/or serious injury.
SAVE THESE INSTRUCTIONS.
ITEM DESCRIPTION
Electrical Requirements Power Output: 18 VDC
Drill RPM: 0 to 500 RPM
Charger Input: 120 VAC / 60 Hz
Charge Time: 5 Hours
Charger Power Cord: 22 Gauge x 6 Ft.
Charger Plug Type: 2-Prong, Non-Polarized
Chuck Type 3/8” Keyless
Torque Settings 1 to15
Dimensions 9” L x 3” W x 9.37”
Weight 4 pounds
ELECTRICAL SAFETY
Grounded tools must be plugged into an outlet properly installed and4.

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grounded in accordance with all codes and ordinances. Do not remove the
grounding prong or modify the plug in any way. Do not use any adapter
plugs. Check with a qualied 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.
Double insulated tools are equipped with a polarized plug (one blade is5.
wider than the other). This plug will t in a polarized outlet only one way. If
the plug does not t fully in the outlet, reverse the plug. If it still does not
t, contact a qualied 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,6.
ranges, and refrigerators. There is an increased risk of electric shock if your
body is grounded.
Do not expose power tools to rain or wet conditions.7. Water entering a power
tool will increase the risk of electric shock.
Do not abuse the Power Cord. Do not use the Power Cord to carry the tools8.
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.
When operating a power tool outside, use an outdoor extension cord9.
marked “W-A” or “W”. These extension cords are rated for outdoor use, and
reduce the risk of electric shock.
Stay alert. Watch what you are doing, and use common sense when10.
operating a power tool. Do not use a power tool while tired or under the
inuence of drugs, alcohol, or medication. A moment of inattention while
operating power tools may result in serious personal injury.
Dress properly. Do not wear loose clothing or jewelry. Contain long hair.11.
Keep your hair, clothing, and gloves away from moving parts. Loose
clothes, jewelry, or long hair can be caught in moving parts.
Avoid accidental starting. Be sure the Power Switch is off before plugging12.
in. Carrying power tools with your nger on the Power Switch, or plugging in
power tools with the Power Switch on, invites accidents.
Remove adjusting keys or wrenches before turning the power tool on.13. A
PERSONAL SAFETY

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wrench or 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.14. Proper
footing and balance enables better control of the power tool in unexpected
situations.
Use safety equipment. Always wear eye protection.15. Dust mask, non-skid
safety shoes, hard hat, or hearing protection must be used for appropriate
conditions.
Use clamps (not included) or other practical ways to secure and support16.
the workpiece to a stable platform. Holding the work by hand or against your
body is unstable and may lead to loss of control.
Do not force the tool. Use the correct tool for your application.17. 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 Power Switch does not turn it on or off.18.
Any tool that cannot be controlled with the Power Switch is dangerous and must
be replaced.
Disconnect the Power Cord Plug from the power source before making any19.
adjustments, changing accessories, or storing the tool. Such preventive
safety measures reduce the risk of starting the tool accidentally.
Store idle tools out of reach of children and other untrained persons.20. Tools
are dangerous in the hands of untrained users.
Maintain tools with care. Keep cutting tools sharp and clean.21. Properly
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.
Check for misalignment or binding of moving parts, breakage of parts, and22.
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.
Use only accessories that are recommended by the manufacturer for your23.
model. Accessories that may be suitable for one tool may become hazardous
when used on another tool.
TOOL USE AND CARE

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Maintain labels and nameplates on the Drill.1. These carry important information.
If unreadable or missing, contact Harbor Freight Tools for a replacement.
2. Always wear ANSI approved safety impact eye goggles when using the
Drill. Using personal safety devices reduce the risk for injury. Safety impact
eye goggles are available from Harbor Freight Tools.
Maintain a safe working environment.3. 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 ammable chemicals, dusts, and vapors. Do not use this product in a damp or
wet location.
Avoid unintentional starting.4. Make sure you are prepared to begin work
before turning on the Drill.
Do not force the Drill.5. This tool will do the work better and safer at the speed
and capacity for which it was designed.
Never leave the Drill unattended for the entire length of time it is being6.
charged. Periodically check on the progress of the charging operation.
IMPORTANT: Carefully inspect the condition of the Drill before use, and7.
check the tool continually during use. If any damage is noted, stop; immedi-
ately and repair or replace the Drill.
When using a handheld power tool, always8. maintain a rm grip on the tool
with both hands to resist starting torque.
The charge time for the Battery (27) is 5 hours. Do not charge the Battery for9.
over 5 hours as damage to the Battery and/or Drill may result.
Battery (27) leakage may occur under extreme usage or temperature10.
conditions. If Battery uid comes in contact with skin, wash with soap and water
and rinse with lemon juice and vinegar. If the uid comes into contact with eyes,
ush with water for several minutes and call a physician immediately.
Always switch to a fresh Battery (27) when tool performance begins to11.
diminish. Severe heat is most destructive to a Battery. The more heat generated,
the faster the Battery loses its power. A Battery that gets too hot can be
permanently damaged. Never over-discharge a Battery by using the tool even
after tool performance is decreasing. Never attempt to discharge a tool’s Battery
SPECIFIC SAFETY RULES
Tool service must be performed only by qualied repair personnel. 24. Service or
maintenance performed by unqualied personnel could result in a risk of injury.
When servicing a tool, use only identical replacement parts.25. 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.
SERVICE

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by continuing to pull the tool’s Trigger (19). When tool performance begins to
diminish stop the tool, recharge the Battery, and use the fresh Battery for optimal
performance.
1 2 . Never burn a Battery (27), as it can explode in a re. Contact local
solid waste authorities for instructions on correct disposal of a Battery.
Do not attempt to charge a leaking Battery (27).13.
Make sure the Trigger (19) is in its “OFF” position and the Battery (27) is14.
disconnected from the tool prior to performing any inspection, maintenance,
or cleaning procedures.
WARNING!15. 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.
WARNING!16. 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.
WARNING!17. 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: A) Lead from lead-based paints, B) Crystalline silica from bricks
and cement or other masonry products, C) 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 lter out microscopic particles.
(California Health & Safety Code 25249.5, et seq.)
SAVE THESE INSTRUCTIONS
GROUNDING
WARNING
Improperly connecting the grounding wire can result in the risk of electric shock.
Check with a qualied 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 factility before use. If the plug will

SKU 93440 For technical questions, please call 1-800-444-3353. Page 7
GROUNDED TOOLS: TOOLS WITH THREE PRONG PLUGS
Tools marked with “Grounding Required” have a three wire cord and three prong1.
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 cord2.
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 and3.
grounded in accordance with all codes and ordinances. The plug and outlet
should look like those in the following illustration. (See Figure A.)
3-PRONG
ELECTRICAL
PLUG
120 VOLT,
GROUNDED,
ELECTRICAL OUTLET
Figure A
DOUBLE INSULATED TOOLS: TOOLS WITH TWO PRONG PLUGS
Tools marked “Double Insulated” do not require grounding. They have a special4.
double insulation system which satises 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 the5.
following illustration. (See Figure B.)
FIGURE B
THE CHARGER (30)
FOR THIS PRODUCT
USES A
2-PRONG PLUG
120 VOLT,
GROUNDED,
ELECTRICAL
OUTLETS

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EXTENSION CORDS
Grounded1. 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 gauge2.
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.)
The smaller the gauge number of the wire, the greater the capacity of the cord.3.
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, make4.
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 am-5.
peres and use the sum to determine the required minimum cord size. (See Figure
C.)
If you are using an extension cord outdoors, make sure it is marked with the sufx 6.
“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.7.
Always replace a damaged extension cord or have it repaired by a qualied electri-
cian before using it.
Protect your extension cords from sharp objects, excessive heat, and damp or wet8.
areas.

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SYMBOLOGY
Double Insulated
Canadian Standards
Association
Underwriters
Laboratories, Inc.
Volts Alternating Current
Amperes
No Load Revolutions
per Minute (RPM)
no xxxx/min.
A
V ~
FIGURE D
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.
ASSEMBLY AND OPERATING INSTRUCTIONS
NOTE:
For additional information regarding the parts listed in the
following pages, refer to the Assembly Diagram on page 15.
CAUTION! Always make sure the Trigger (19) of the Drill is in its “OFF” position prior
to assembling the tool, adding any accessories, or making adjustments to the tool.
Charging and Recharging The Battery
Allow the battery to cool completely before recharging.
Charging room temperature must be from 50°-104° F
The Battery (27) for the Drill must be fully charged before using the tool.1.
When charging for the rst time, and all subsequent charges, the charge time is 2. 5
hours. Never charge the Battery (27) for longer than 5 hours, as damage to the
Battery and/or tool will occur.
To charge the Battery (27), push in on the two side buttons on the Battery. Then,3.
slide the Battery off the Drill handle. (See Figure E.)
REV 09b

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Slide the Battery (27) into the Charger (30) Base. The Battery can only insert one4.
way using the guide tabs. (See Figure E.)
Plug the Charger Output Cord into the Battery Charger Base.5. (See Figure E.)
Plug the Charger (30) into a 120 volt, grounded, electrical outlet.6. (See Figure E.)
Verify on the Charger (30) Base that the green power indicator light and the red7.
charging indicator light illuminate. If they do not illuminate, check the power con-
nection or try a different electrical outlet. (See Figure E.)
Charge the Battery (27) for 5 hours. Never charge the Battery for more than 58.
hours or damage to the Battery and/or Drill will result. (See Figure E.)
IMPORTANT:9. The Charger (30) will not automatically shut off when the Battery
is fully charged. As a safety precaution, if the battery is being overcharged and
heats up the charger will automatically shut off to help reduce the risk of re. This
will cause the red charging indicator light will slowly blink while the green light will
remain on. Avoid battery/ tool damage by removing power to the Charger after the
5 hour charging is nished and before the red light starts blinking.(See Figure E.)
When nished charging, disconnect the Charger (30) from the electrical out-10.
let. Disconnect the Charger Output Cord from the Charger Base. Remove the
Charger Base from the Battery (27). Then, reinstall the Battery onto the Drill.
(See Figure E.)
REV 01/06
FIGURE E
BATTERY
(27)
CHARGER BASE
CHARGER
OUTPUT CORD

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To Install And Remove A Drill Or Screwdriver Bit:
Make sure the Trigger (19) is in its “OFF” position, and remove the Battery (27)1.
from the Drill. (See Figure G.)
Insert a drill or screwdriver bit (not included) into the Keyless Chuck (25), and2.
secure the bit in the Keyless Chuck by turning the Chuck Sleeve clockwise. To
remove the bit, turn the Chuck Sleeve counterclockwise. (See Figure G.)
The Drill Torque Selector:
1. Set the Torque Selector located on the Gear Box (14). The Torque Selector dial
is indicated by the numbers 1 through 15. The lowest torque position is 1. The
highest torque position is 15. For example, position 1 (lowest torque) is
appropriate for driving screws into wood without stripping the screw. Positions 10
and up (high torque) are appropriate for drilling. Make sure the Drill is completely
stopped before changing torque. (See Figures F and G.)
TORQUE SELECTOR
KEYLESS CHUCK
(25)
TRIGGER
(19)
FORWARD/REVERSE SWITCH
(3)
CHUCK SLEEVE
BATTERY
(27) FIGURE G
The Forward/Reverse Switch:
For a1. clockwise rotation of the Drill, push the Forward/Reverse Switch (3) to the
left. For a counterclockwise rotation of the Drill, push the Forward/Reverse
Switch to the right. Make sure the Drill is completely stopped before changing
rotational directions. (See Figure G.)
FIGURE F Torque Setting Guide*
Torque Setting #1 = 16 inch/lbs. Torque Setting #6 = 22 inch/lbs Torque Setting #11 = 27 inch/lbs.
Torque Setting #2 = 17 inch/lbs. Torque Setting #7 = 23 inch/lbs. Torque Setting #12 = 28 inch/lbs.
Torque Setting #3 = 18 inch/lbs. Torque Setting #8 = 24 inch/lbs. Torque Setting #13 = 29 inch/lbs.
Torque Setting #4 = 19 inch/lbs. Torque Setting #9 = 25 inch/lbs. Torque Setting #14 = 30 inch/lbs.
Torque Setting #5 = 20 inch/lbs. Torque Setting #10 = 26 inch/lbs. Torque Setting #15 = 35 inch/lbs.
* All torque settings are + or - 2 inch/lbs.

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INSPECTION, MAINTENANCE, AND CLEANING
WARNING!1. Make sure the Trigger (19) of the Drill is in its “OFF” position, and
the Battery (27) is removed from the tool prior to performing any inspection,
maintenance, or cleaning procedures.
Before each use,2. inspect the general condition of the Drill and its Charger (30).
Check for loose screws, misalignment or binding of moving parts, cracked or broken
parts, damaged electrical wiring, and any other condition that may affect safe
operation. If abnormal noise or vibration occurs, have the problem corrected before
further use. Do not use damaged equipment.
To clean the Drill,3. use only a clean cloth and mild detergent.
Do not use solvents. Do not immerse any part of the tool in liquids.
When storing,4. make sure to store the tool in a clean, dry, safe location out of reach
of children and other unauthorized people.
CAUTION! All maintenance, service, or repairs not mentioned in this man-5.
ual must only be performed by a qualied service technician.
To Operate The Drill:
Select and install the desired drill or screwdriver bit.1.
Make sure to install a fully charged Battery (27) in the Drill.2. (See Figure G.)
Set the Torque Selector located on the Gear Box (14) to the desired setting.3.
(See Figures F and G.)
Squeeze (and hold) the Trigger (19) to turn on the Drill. The Trigger varies the4.
speed of rotation depending on how far in it is squeezed. (See Figure G.)
Avoid overloading the Drill. Always use sharp bits. Do not apply excessive5.
pressure to the Drill while drilling. If the Drill speed drops abnormally, decrease
pressure immediately. If the bit stops abruptly, or the bit becomes stuck, release
the Trigger (19) at once. (See Figure G.)
When driving screws into wood or plastics, drill a pilot hole rst in the workpiece. 6.
Make sure the length and diameter of the hole is slightly less than that of the
actual screw. When driving screws into metal, drill a pilot hole slightly more than
that of the actual screw.
When nished using the Drill, always remove the Battery (27). Then remove 7.
the drill or screwdriver bit and store the tool in a clean, dry, safe location out of
reach of children and other unauthorized people.

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TROUBLESHOOTING
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.

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NOTE:
Some parts are listed and shown for illustration purposes only,
and are not available individually as replacement parts.
PARTS LIST

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ASSEMBLY DIAGRAM
NOTE:
Some parts are listed and shown for illustration purposes only,
and are not available individually as replacement parts.
30: CHARGER NOT SHOWN.

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LIMITED 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 this product
is free from defects in materials and workmanship for the period of 90 days from the date
of purchase. This warranty does not apply to damage due directly or indirectly, to misuse,
abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity,
improper installation, normal wear and tear, or to lack of maintenance. We shall in no event
be liable for death, injuries to persons or property, or for incidental, contingent, special
or consequential damages arising from the use of our product. Some states do not allow
the exclusion or limitation of incidental or consequential damages, so the above limitation
of exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF
MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with
transportation charges prepaid. Proof of purchase date and an explanation of the com-
plaint must accompany the merchandise. If our inspection veries 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 specic 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 • [phone]