Makita DA391D User Manual

Cordless Angle Drill

Equipped with Electric Brake
MODEL DA391D

INSTRUCTION MANUAL

WARNING:

For your personal safety, READ and UNDERSTAND before using.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.

www.makitatools.com

SPECIFICATIONS

Model DA391D

Steel 10 mm (3/8”)

Capacities

No load speed (RPM) 0 - 800/min.

Dimensions (L x W x H)

Net weight 1.3 kg (2.9 lbs)

Rated voltage D.C. 9.6 V

Standard battery cartridges 9000

• Manufacturer reserves the right to change specifications without notice.

• Specifications may differ from country to country.

Wood 12 mm (15/32”)

Wood screw 4.5 x 20 mm (3/16” x 3/4”)

335 mm x 59 mm x 115 mm

(13 - 1/4” x 2 - 3/8” x 4 - 1/2”)

GENERAL SAFETY RULES USA003-1

(FOR All BATTERY OPERATED TOOLS)

WARNING:

Read and understand all instructions. Failure to follow all

instructions listed below, may result in electric shock, fire and/or
serious personal injury.

SAVE THESE INSTRUCTIONS

Work A re a

1. Keep your work area clean and well lit.

Cluttered benches and dark areas invite acci­dents.

2. Do not operate power tools in explosive
atmospheres, such as in the presence of

2

flammable liquids, gases, or dust. Power
tools create sparks which may ignite the dust
or fumes.

3. Keep bystanders, children, and visitors
away while operating a power tool. Distrac-

tions can cause you to lose control.

Electrical Safety

4. A battery operated tool with integral bat­teries or a separate battery pack must be
recharged only with the specified charger
for the battery. A charger that may be suit-

able for one type of battery may create a risk
of fire when used with another battery.

5. Use battery operated tool only with specif­ically designated battery pack. Use of any

other batteries may create a risk of fire.

Personal Safety

6. Stay alert, watch what you are doing, and
use common sense when operating a
power tool. Do not use tool while tired or
under the influence of drugs, alcohol, or
medication. A moment of inattention while

operating power tools may result in serious
personal injury.

7. 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.

8. Avoid accidental starting. Be sure switch
is in the locked or off position before
inserting battery pack. Carrying tools with

your finger on the switch or inserting the bat­tery pack into a tool with the switch on invites
accidents.

9. Remove adjusting keys or wrenches
before turning the tool on. A wrench or a

key that is left attached to a rotating part of
the tool may result in personal injury.

10. Do not overreach. Keep proper footing
and balance at all times. Proper footing and

balance enable better control of the tool in
unexpected situations.

11. 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

12. Use clamps or other practical way 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.

13. Do not force 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.

14. Do not use tool if switch does not turn it
on or off. A tool that cannot be controlled

with the switch is dangerous and must be
repaired.

15. Disconnect battery pack from tool or
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.

16. Store idle tools out of reach of children
and other untrained persons. Tools are

dangerous in the hands of untrained users.

17. When battery pack is not in use, keep it
away from other metal objects like: paper
clips, coins, keys, nails, screws, or other
small metal objects that can make a con­nection from one terminal to another.

Shorting the battery terminals together may
cause sparks, burns, or a fire.

18. Maintain tools with care. Keep cutting
tools sharp and clean. Properly maintained

tools with sharp cutting edge are less likely to
bind and are easier to control.

19. Check for misalignment or binding of
moving parts, breakage of parts, and any
other condition that may affect the tool’s
operation. If damaged, have the tool ser­viced before using. Many accidents are

caused by poorly maintained tools.

20. Use only accessories that are recom­mended by the manufacturer for your
model. Accessories that may be suitable for

one tool may create a risk of injury when
used on another tool.

3

SERVICE

21. Tool service must be performed only by
qualified repair personnel. Service or main-

tenance performed by unqualified personnel
may result in a risk of injury.

22. When servicing a tool, use only identical
replacement parts. Follow instructions in
the Maintenance section of this manual.

Use of unauthorized parts or failure to follow
Maintenance instructions may create a risk of
shock or injury.

SPECIFIC SAFETY RULES USB022-2

DO NOT let comfort or familiarity with product (gained from
repeated use) replace strict adherence to cordless drill safety
rules. If you use this tool unsafely or incorrectly, you can suffer
serious personal injury.

1. Hold tool by insulated gripping surfaces
when performing an operation where the
cutting tool may contact hidden wiring.

Contact with a “live” wire will also make
exposed metal parts of the tool “live” and
shock the operator.

2. Be aware that this tool is always in an
operating condition, because it does not
have to be plugged into an electrical out­let.

3. Always be sure you have a firm footing.

4. Be sure no one is below when using the

tool in high locations.

5. Hold the tool firmly.

6. Keep hands away from rotating parts.

7. Do not leave the tool running. Operate the

tool only when hand-held.

8. Do not touch the drill bit or the workpiece
immediately after operation; they may be
extremely hot and could burn your skin.

9. Some material contains chemicals which
may be toxic. Take caution to prevent
working dust inhalation and skin contact.
Follow material supplier safety data.

SAVE THESE INSTRUCTIONS

WARNING:

MISUSE or failure to follow the safety rules stated in this
instruction manual may cause serious personal injury.

4

IMPORTANT SAFETY INSTRUCTIONS FOR
BATTERY CARTRIDGE

1. Before using battery cartridge, read all
instructions and cautionary markings on
(1) battery charger, (2) battery, and (3)
product using battery.

2. Do not disassemble battery cartridge.

3. If operating time has become excessively

shorter, stop operating immediately. It
may result in a risk of overheating, possi­ble burns and even an explosion.

4. If electrolyte gets into your eyes, rinse
them out with clear water and seek medi­cal attention right away. It may result in
loss of your eyesight.

5. Always cover the battery terminals with
the battery cover when the battery car­tridge is not used.

6. Do not short the battery cartridge:

(1) Do not touch the terminals with any

conductive material.

(2) Avoid storing battery cartridge in a

(3) Do not expose battery cartridge to

A battery short can cause a large current
flow, overheating, possible burns and
even a breakdown.

7. Do not store the tool and battery cartridge
in locations where the temperature may
reach or exceed 50°C (122°F).

8. Do not incinerate the battery cartridge
even if it is severely damaged or is com­pletely worn out. The battery cartridge can
explode in a fire.

9. Be careful not to drop or strike battery.

SAVE THESE INSTRUCTIONS

ENC004-1

container with other metal objects
such as nails, coins, etc.

water or rain.

Tips for maintaining maximum battery life

1. Charge the battery cartridge before com­pletely discharged.
Always stop tool operation and charge the
battery cartridge when you notice less
tool power.

2. Never recharge a fully charged battery
cartridge.
Overcharging shortens the battery service
life.

3. Charge the battery cartridge with room
temperature at 10°C - 40°C (50°F - 104°F).
Let a hot battery cartridge cool down
before charging it.

4. Charge the Nickel Metal Hydride battery
cartridge when you do not use it for more
than six months.

5

FUNCTIONAL
DESCRIPTION

1

2

1. Set plate

2. Battery cartridge

1

1. Switch trigger

CAUTION:

• Always be sure that the tool is switched off and the
battery cartridge is removed before adjusting or
checking function on the tool.

002055

Installing or removing battery cartridge

• Always switch off the tool before insertion or removal of
the battery cartridge.

• To remove the battery cartridge, pull out the set plate on
the tool and grasp both sides of the cartridge while
withdrawing it from the tool.

• To insert the battery cartridge, align the tongue on the
battery cartridge with the groove in the housing and slip
it into place. Snap the set plate back into place. Be sure
to close the set plate fully before using the tool to prevent
the battery cartridge from accidentally falling out of the
tool.

• Do not use force when inserting the battery cartridge. If
the cartridge does not slide in easily, it is not being
inserted correctly.

002870

Switch action

CAUTION:

• Before inserting the battery cartridge into the tool,
always check to see that the switch trigger actuates
properly and returns to the “OFF” position when
released.

To start the tool, simply pull the switch trigger. Tool speed is
increased by increasing pressure on the switch trigger.
Release the switch trigger to stop.

Electric brake

This tool is equipped with an electric brake. If the tool consis­tently fails to quickly stop after switch trigger release, have
tool serviced at a Makita service center.

6

2

1. Reversing switch lever

2. Switch trigger

1

1. Reset button

002871

1

002106

Reversing switch action

This tool has a reversing switch to change the direction of
rotation. Move the reversing switch lever to the “FWD” posi­tion for clockwise rotation or the “REV” position for counter­clockwise rotation.

When the reversing switch lever is in the neutral position, the
switch trigger cannot be pulled.

CAUTION:

• Always check the direction of rotation before operation.

• Use the reversing switch only after the tool comes to a

complete stop. Changing the direction of rotation before
the tool stops may damage the tool.

• When not operating the tool, always set the reversing
switch lever to the neutral position.

Overload protector

The overload protector automatically cuts out to break the
circuit and the button pops out, whenever heavy work is pro­longed. Wait 20 - 30 seconds before pressing the reset but­ton to resume operation. The tool should be switched off
when you press the reset button, however.

ASSEMBLY

1
2

1. Sleeve

2. Ring

CAUTION:

• Always be sure that the tool is switched off and the
battery cartridge is removed before carrying out any
work on the tool.

002123

Installing or removing driver bit or drill bit

Hold the ring and turn the sleeve counterclockwise to open
the chuck jaws. Place the bit in the chuck as far as it will go.
Hold the ring firmly and turn the sleeve clockwise to tighten
the chuck.
To remove the bit, hold the ring and turn the sleeve counter­clockwise.

7

OPERATION

002136

Screwdriving operation

Place the point of the driver bit in the screw head and apply
pressure to the tool. Start the tool slowly and then increase
the speed gradually. Release the trigger just as the screw
bottoms out. If the trigger is not released, the screw may strip
out the hole or the screw and/or bit may be damaged.

NOTE:

• Make sure that the driver bit is inserted straight in the
screw head, or the screw and/or bit may be damaged.

• When driving wood screws, predrill pilot holes to make
driving easier and to prevent splitting of the workpiece.
See the chart.

Nominal diameter of

wood screw (mm)

3.1 (1/8”)

3.5 (9/64”)

3.8 (5/32”)

4.5 (11/64”)

Recommended size
of pilot hole (mm)

2.0 - 2.2 (5/64” - 3/32”)

2.2 - 2.5 (3/32” - 3/32”)

2.5 - 2.8 (3/32” - 7/64”)

2.9 - 3.2 (7/64” - 1/8”)

• If the tool is operated continuously until the battery
cartridge has discharged, allow the tool to rest for 15
minutes before proceeding with a fresh battery.

Drilling operation

Drilling in wood

When drilling in wood, the best results are obtained with
wood drills equipped with a guide screw. The guide screw
makes drilling easier by pulling the bit into the workpiece.

Drilling in metal

To prevent the bit from slipping when starting a hole, make
an indentation with a center-punch and hammer at the point
to be drilled. Place the point of the bit in the indentation and
start drilling.
Use a cutting lubricant when drilling metals. The exceptions
are iron and brass which should be drilled dry.

CAUTION:

• Pressing excessively on the tool will not speed up the
drilling. In fact, this excessive pressure will only serve to

8

damage the tip of your bit, decrease the tool
performance and shorten the service life of the tool.

• There is a tremendous force exerted on the tool/bit at the
time of hole break through. Hold the tool firmly and exert
care when the bit begins to break through the workpiece.

• A stuck bit can be removed simply by setting the
reversing switch to reverse rotation in order to back out.
However, the tool may back out abruptly if you do not
hold it firmly.

• Always secure small workpieces in a vise or similar hold­down device.

• If the tool is operated continuously until the battery
cartridge has discharged, allow the tool to rest for 15
minutes before proceeding with a fresh battery.

MAINTENANCE

Ni-Cd

CAUTION:

• Always be sure that the tool is switched off and the
battery cartridge is removed before attempting to
perform inspection or maintenance.

To maintain product SAFETY and RELIABILITY, repairs, any
other maintenance or adjustment should be performed by
Makita Authorized or Factory Service Centers, always using
Makita replacement parts.

EN0001-1

Recycling the Battery

The only way to dispose of a Makita battery is to recycle it.
The law prohibits any other method of disposal.

To recycle the battery:

1. Remove the battery from the tool.

2. a) Take the battery to your nearest Makita Factory Ser­vice Center

or

b) Take the battery to your nearest Makita Authorized

Service Center or Distributor that has been desig­nated as a Makita battery recycling location.

Call your nearest Makita Service Center or Distributor to
determine the location that provides Makita battery recycling.
See your local Yellow Pages under “Tools-Electric”.

9

ACCESSORIES

CAUTION:

• These accessories or attachments are recommended for
use with your Makita tool specified in this manual. The
use of any other accessories or attachments might
present a risk of injury to persons. Only use accessory
or attachment for its stated purpose.

If you need any assistance for more details regarding these
accessories, ask your local Makita service center.

• Drill bits

• Screw bits

• Various type of Makita genuine batteries and chargers

• Rubber pad assembly

• Wool bonnet

• Foam polishing pad

• Plastic carrying case

10

Memo

11

Memo

12

Cut

Makita U.S.A., Inc.

14930 Northam Street
La Mirada, CA 90638-5753

Fold

First-Class

Postage

Required

Post Office will

not deliver

without proper

postage.

13

MAIL THIS PORTION

Your answers to the following questions are appreciated.

1. This product was purchased from:

Home Center

Hardware/Lumber Store

Tool Distributor

Industrial Supply

Construction Supply

2. Use of the product is intended for:

Construction Trade

Industrial Maintenance

Home Maintenance

Hobby

Other ( )

5. Any comments:

DATE PURCHASED MODEL NO.

MONTH DAY YEAR

INTL. LAST NAME / COMPANY NAME

Other ( )

3. How did you learn about this product:

4. Most favored points are:

SERIAL NO.

Magazine

From Dealer

Newspaper

Store Display

Catalog

Design

Features

Size

Price

Makita Brand

Radio

Exhibition

From Friend

Previous Usage

Other ( )

Repair Service

Durability

Powe r

Other ( )

STATUS

Married

Single

SEX

MF

STREET ADRESS

CITY

AREA

S TATE

AGE:

BE SURE TO COMPLETE THE CUSTOMER’S PORTION OF THIS FORM AND RETAIN FOR YOUR RECORDS.

Paste Paste Paste Paste Paste Paste

14

Please return this portion by facsimile or mail.

Facsimile No: [phone]

ZIP CODE PHONE

Under 19 20-29 30-39 40-49 50-60 Over 60

CODE

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FACTORY SERVICE CENTERS

1-800-4-MAKITA

RETAIN THIS PORTION FOR YOUR RECORDS

ARIZONA

3707 E. Broadway Rd., Ste. 6
Phoenix, AZ 85040
[phone]

CALIFORNIA

41850 Christy St.
Fremont, CA 94538-5107
[phone]

14930 Northam St.
La Mirada, CA 90638-5753
[phone]

1970 Fulton Avenue
Sacramento, CA 95825
[phone]

7674 Clairemont Mesa Blvd.
San Diego, CA 92111
[phone]

16735 Saticoy St., Ste. 105
Van Nuys, CA 91406
[phone]

COLORADO

11839 E. 51st Ave.
Denver, CO 80239-2709
[phone]

FLORIDA

750 East Sample Road
Pompano Beach, FL 33064
[phone]

GEORGIA

4680 River Green Parkway NW
Duluth, GA 30096
[phone]

ILLINOIS

1450 Feehanville Dr.
Mt. Prospect, IL 60056-6011
[phone]

MARYLAND

7397 Washington Boulevard,
Suite 104 Elkridge, MD 21075
[phone]

MASSACHUSETTS

232 Providence Hwy.
Westwood, MA 02090
[phone]

MINNESOTA

6427 Penn Ave. South
Richfield, MN 55423
[phone]

MISSOURI

9876 Watson Road
St. Louis, MO 63126-2221
[phone]

NEBRASKA

4129 S. 84th St.
Omaha, NE 68127
[phone]

NEVADA

3375 S. Decatur Blvd.
Suites. 22 - 24
Las Vegas, NV 89102
[phone]

NEW JERSEY

251 Herrod Blvd.
Dayton, NJ 08810-1539
[phone]

NEW YORK

4917 Genessee Street
Cheektowaga, NY 14225
[phone]

OREGON

828 19th Avenue, N.W.
Portland, OR 97209
[phone]

PENNSYLVANIA

1704 Babcock Blvd.
Pittsburgh, PA 15209
[phone]

PUERTO RICO

200 Guayama St.
Hato Rey, PR 00917
[phone]

TENNESSEE

1120 Elm Hill P.
Suile 170 Nashville, TN 372
[phone]

TEXAS

12801 Stemmons Fwy Ste. 809
Farmers Branch, TX 75234
[phone]

12701 Directors Dr.
Stafford, TX 77477-3701
[phone]

3453 IH-35 North, Ste. 101
San Antonio, TX 78219
[phone]

WISCONSIN

Lincoln Plaza Shopping Ctr.
2245 S. 108th St. West Allis, WI
53227
[phone]

CUSTOMER’S RECORD

When you need service: Send
complete tool (prepaid) to one
of the Makita Factory Service
Centers listed, or to an Authorized
Makita Service Center. Be sure
to attach a letter to the outside of
the carton detailing the problem
with your tool.

Date Purchased

Dealer’s Name & Address

Model No.

Serial No.

15

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 and cement and other masonry products, and

• 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.

MAKITA LIMITED ONE YEAR WARRANTY

Warranty Policy

Every Makita tool is thoroughly inspected and tested before leaving the factory. It is warranted to be free of
defects from workmanship and materials for the period of ONE YEAR from the date of original purchase.
Should any trouble develop during this one year period, return the COMPLETE tool, freight prepaid, to one of
Makita’s Factory or Authorized Service Centers. If inspection shows the trouble is caused by defective
workmanship or material, Makita will repair (or at our option, replace) without charge.

This Warranty does not apply where:

• repairs have been made or attempted by others:

• repairs are required because of normal wear and tear:

• the tool has been abused, misused or improperly maintained:

• alterations have been made to the tool.

IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTAL OR CONSEQUENTIAL
DAMAGES FROM THE SALE OR USE OF THE PRODUCT. THIS DISCLAIMER APPLIES BOTH DURING
AND AFTER THE TERM OF THIS WARRANTY.

MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED WARRANTIES, INCLUDING IMPLIED WARRANTIES OF
“MERCHANTABILITY” AND “FITNESS FOR A SPECIFIC PURPOSE,” AFTER THE ONE YEAR TERM OF THIS
WARRANTY.

This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above
limitation or exclusion may not apply to you. Some states do not allow limitation on how long an implied
warranty lasts, so the above limitation may not apply to you.

883781J061

Makita Corporation

3-11-8, Sumiyoshi-cho,

Anjo, Aichi 446-8502 Japan