makita DS4012 Corded Drills Instruction Manual

: June 3, 2024
: Makita

Table of Contents

SPECIFICATIONS
General Power Tool Safety
- Save all warnings and instructions for future reference.
DRILL SAFETY WARNINGS
- SAVE THESE INSTRUCTIONS.
Symbols
FUNCTIONAL DESCRIPTION
- Switch action
- Reversing switch action
ASSEMBLY
OPERATION
MAINTENANCE
OPTIONAL ACCESSORIES
MAKITA LIMITED ONE YEAR WARRANTY
- WARNING
Customer Support
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

makita DS4012 Corded Drills Instruction Manual

SPECIFICATIONS

Model	DS4012
Capacities	Steel
Wood	36 mm (1-7/16″)
No load speed (RPM)	0 – 600 /min
Overall length	340 mm (13-3/8″)
Net weight	2.8 kg (6.2 lbs)

Due to our continuing program of research and development, the specifications herein are subject to change without notice.
Specifications may differ from country to country.
Weight according to EPTA-Procedure 01/2003.

General Power Tool Safety

Warnings: Read all safety warnings and all instructions. Failure to follow the warnings and instructions 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.
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 an 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 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 energizing 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.
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 jeweler.
Keep your hair, clothing, and gloves away from moving parts. Loose clothes, jewelers 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 disrelated hazards.
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 the battery pack 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.
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.
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.
Follow instruction for lubricating and changing accessories.
Keep handles dry, clean and free from oil and grease.
USE PROPER EXTENSION CORD. Make sure your extension cord is in good condition.
When using an extension cord, be sure to use one heavy enough to carry the current your product will draw.
An undersized cord will cause a drop in line voltage resulting in loss of power and overheating.
Table 1 shows the correct size to use depending on cord length and nameplate ampere rating.
If in doubt, use the next heavier gage.
The smaller the gage number, the heavier the cord.

Table 1: Minimum gage for cord

Ampere Rating	Volts	Total length of cord in feet
120V	25 ft.	50 ft.
220V – 240V	50 ft.	100 ft.
More Than	Not More Than	AWG
0	6
6	10	18
10	12	16
12	16	14

DRILL SAFETY WARNINGS

Use auxiliary handle(s), if supplied with the tool.
Loss of control can cause personal injury.
Hold 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.
Always be sure you have a firm footing.
Be sure no one is below when using the tool in high locations.
Hold the tool firmly.
Keep hands away from rotating parts.
Do not leave the tool running. Operate the tool only when hand-held.
Do not touch the drill bit or the workpiece immediately after operation; they may be extremely hot and could burn your skin.
Some material contains chemicals which may be toxic.
Take caution to prevent dust inhalation and skin contact.
Follow material supplier safety data

SAVE THESE INSTRUCTIONS.

WARNING:

DO NOT let comfort or familiarity with product (gained from repeated use) replace strict adherence to safety rules for the subject product. MISUSE or failure to follow the safety rules stated in this instruction manual may cause serious personal injury.

Symbols

The followings show the symbols used for tool.

| volts
---|---
| Amperes
| hertz
| alternating current
| no load speed
| Class II Construction
| revolutions or reciprocation per minute

FUNCTIONAL DESCRIPTION

CAUTION:

Always be sure that the tool is switched off and unplugged before adjusting or checking function on the tool.

Switch action

**CAUTION:**

Before plugging in the tool, always check to see that the switch trigger actuates properly and returns to the “OFF” position when released.

Switch trigger
Lock button

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.
For continuous operation, pull the switch trigger, push in the lock button and then release the switch trigger.
To stop the tool from the locked position, pull the switch trigger fully, then release it.

Reversing switch action

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.
If the switch trigger can not be depressed, check to see that the reversing switch is fully set to the position (A side) or the position (B side)

Reversing switch lever

This tool has a reversing switch to change the direction of rotation. Move the reversing switch lever to the position (A side) for clockwise rotation or the position (B side) for counterclockwise rotation.

ASSEMBLY

CAUTION:

Always be sure that the tool is switched off and unplugged before carrying out any work on the tool.

Installing top grip (auxiliary handle)
Screw the top grip on the tool securely.

Installing or removing drill bit

Chuck key

To install the bit, place it in the chuck as far as it will go.
Tighten the chuck by hand. Place the chuck key in each of the three holes and tighten clockwise.
Be sure to tighten all three chuck holes evenly.
To remove the bit, turn the chuck key counter clock wise in just one hole, then loosen the chuck by hand.
After using the chuck key, be sure to return to the original position.

OPERATION

Drilling operation
Always use the top or back grip (auxiliary handle) and firmly hold the tool by top or back grip and switch handle during operations.

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 damage the tip of your bit, decrease the tool performance and shorten the service life of the tool.
There is a tremendous twisting force exerted on the tool/bit at the time of hole breakthrough.
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 hold-down device.
Avoid drilling in material that you suspect contains hidden nails or other things that may cause the bit to bind or break.

MAINTENANCE

CAUTION:

Always be sure that the tool is switched off and unplugged before attempting to perform inspection or maintenance.
Never use gasoline, benzine, thinner, alcohol or the like. Discoloration, deformation or cracks may result.

Replacing carbon brushes

Limit mark

Remove and check the carbon brushes regularly.
Replace when they wear down to the limit mark.
Keep the carbon brushes clean and free to slip in the holders.
Both carbon brushes should be replaced at the same time. Use only identical carbon brushes.

Brush holder cap
Screwdriver

Use a screwdriver to remove the brush holder caps.
Take out the worn carbon brushes, insert the new ones and secure the brush holder caps.
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.

OPTIONAL 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
Hole saws
Angle attachment
Chuck key
Grip 36
Depth gauge assembly
Wrench
NOTE:
Some items in the list may be included in the tool package as standard accessories.
They may differ from country to country.

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.

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.