Nitto Kohki Atra Ace CLO-2725 User manual

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(Original Instructions)
TQ16463-0 12/2021
For One-touch Type
Annular Cutter 25L Only
Rechargeable
INSTRUCTION
MANUAL
[Specifications]
Main unit
Model CLO-2725 Use the battery and charger manufactured
by Koki Holdings Co., Ltd.
Voltage 36 V
No-load Speed 820 min-1 Battery BSL36A18
MAX. Magnet Magnetic Power 5500 N (561 kgf *1) BSL36B18
Magnet Dimensions 65×145 mm Charger UC18YSL3
Adjustment Range Front/back travel: 10 mm,
left/right travel: 10 mm R
ead the instruction manual of Koki Holdings
Co., Ltd., on how to use the battery and
charger.
For further information about the battery and
charger, contact Koki Holdings Co., Ltd.
Mass (weight)
9.0 kg
(When equipped with battery and feed
handle)
Cutter Plate Thickness Hole Diameter
JETBROACH one-touch type 6 to 25 mm 12 to 27 mm dia.
*1 The value in kgf is for reference only.
 Please read the manual carefully before you attempt to use your tool so that you may use it properly and safely.
 Keep the manual handy - so you can use it whenever necessary.
• Due to continuous product development/improvement, the specifications and configurations in this document are subject to
change without prior notice.
Manufactured by.
NITTO KOHKI CO., LTD.
9-4, Nakaikegami 2-chome, Ohta-ku, Tokyo, 146-8555, Japan
Tel : [phone] Fax : [phone]
Thank you very much for your purchase of this NITTO KOHKI product.
Before using your tool, please read this manual carefully so that you may use it properly to get the most out of it.
Professional tool
Portable Magnetic Base Drilling Machine
Atra Ace
Model: CLO-2725 (NN)

2
EN
Please keep the manual handy - so you can use it whenever necessary.
 English : Please ask your dealer or distributor for instruction manual in local language(s).
 German : Bitte fragen Sie lhren Händler nach eine Betriebsanleitung in Landessprache.
 French : S'il vous plait, veuillez demandez á votre foumisseur de manuel instruction en langue locale.
 Spanish : Por favor, cantacte con su distribuidor para el manual de instrucciones en español.
 Portuguese : Por favor pessa ao seo agente ou distribuidor o manual de instrucces ih linguagen local.
 Italian : Per Manuale Istruzioni in lingua locale Vi preghiamo di rivolgervi al rivenditore o distributore.
 Dutch : Vraag uw handelaar om een nederladstalige gebruiksaanwijzing.
 Swedish : Be er lokala Åtreförsäljare eller distributör om manualer pá svenska.
 Danish : Venligst henvend Dem til den danske distributør for instructions manualer.
 Polish : Prosze pytac swojego dealera lub dystrybutora o instrukcje obslugi w jezyku localnym.

The following Safety notations are used throughout the manual to highlight safety precautions for the user and for the tool.
WARNING:
Indicates a potentially hazardous situation which, if not avoided by following the instructions given,
could result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided by following the
instructions given,
could result in injury or material damage.
* Please note, however, that failure to observe safety precautions under the " CAUTION" category could result in a
serious occurrence depending on the situation.
Please observe all safety precautions in the manual.
CAUTION: Important precautions for tool setup, operation and maintenance.
About pictograms
WARNING: It might be dangerous to operate the tool if the instructions supplied are not followed.
Read the instruction manual before use.
Always wear suitable eye protection.
Always wear suitable hearing protection.
Always wear respiratory protective equipment (PPE).
Sound Pressure Level (LPA) 81.7 dB (A) According to EN 62841-1
Sound Power Level (LWA) 92.7 dB (A) According to EN 62841-1
Uncertainty K 1.515 dB (A) Operating Condition:
No
-
load
Vibration Emission Value ah ≦2.5 m/s
2
According to EN 62841-1 Location: Feed Handle
Storage Temperature -10°C to 50°C (no freezing)
Storage Humidity Max. 90% at 25°C (no dewing)
Operating Temperature 0°C to 40°C
Operation Altitude 1000 m Max
Operating Humidity Max. 90% at 25°C
Pollution Degree Degree 3 According to IEC60664-1
International Protection IP20 According to IEC60529

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(Original Instructions)
TQ16463-0 12/2021
Contents
Precautions on Use (Make sure to follow the
instructions given) ................................................. 4
General safety warnings ................................................. 1
General cordless power tool safety warnings ................. 4
Product specific safety rules ........................................... 6
About drilling ................................................................... 8
Other precautions ........................................................... 9
Charger safety precautions ............................................. 9
Precautions for connecting a USB device ..................... 10
Battery specific safety rules ...........................................11
Regarding Lithium-ion Battery Transportation............... 12
1 Application ........................................................ 13
2 Checking Inside the Package ........................... 13
3 Part Names ...................................................... 14
4 Function of Electronic Control ........................... 15
Load Detection Function ............................................... 15
Battery Level Display .................................................... 15
Plate Thickness Detection ............................................ 16
Safety Functions and Alarm Detection .......................... 16
5 Charging the Battery ......................................... 17
Charging a USB Device ................................................ 18
6 Preparation ....................................................... 19
Attaching the Feed Handle Ass'y .................................. 19
Adjusting the Position of the Handle ............................. 19
Combinations of Cutters and Pilot Pin ...........................20
Attaching the Cutter .......................................................20
Preparation of Cutting Oil ..............................................22
Attaching the Battery .....................................................24
Removing the Battery ....................................................24
Checking the Battery Level ............................................25
7 Basic Operation ............................................... 26
Starting and Stopping ....................................................26
Using the Light ...............................................................27
Drilling Procedure ..........................................................28
Drilling Elongated Holes ................................................30
Drilling H-Beam Steel ....................................................31
8 Troubleshooting ............................................... 32
9 Maintenance and Inspection ............................ 33
Inspection ......................................................................33
Pilot Pin .........................................................................33
Cleaning the Filters ........................................................34
Storing the Tool ..............................................................35
Storing the Battery .........................................................35
Disposal .........................................................................35
Optional Parts ................................................................36
California Proposition 65
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.

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Precautions on Use (Make sure to follow the instructions given)
Before using your tool, to avoid personal injury always take the basic precautions explained in later sections.
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.
(1) 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.
(2) 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 the 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 residual current device (RCD) protected
supply.
Use of an RCD reduces the risk of electric shock.
(3) 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 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 jewelry. Keep your hair and clothing away from moving parts.
Loose clothes, jewelry 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 dust-related 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.
 Keep handles and grasping 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.

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(Original Instructions)
TQ16463-0 12/2021
WARNING
Drill safety warnings
WARNING
(4) 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.
5) Battery tool use and care
 Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may
create a risk of fire when used with another battery pack.
 Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury
and fire.
 When the 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 burns or a fire.
 Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, flush with
water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the battery may cause irritation or burns.
 Do not use a battery pack or tool that is damaged or modified. Damaged or modified batteries may exhibit unpredictable
behavior resulting in fire, explosion, or risk of injury.
 Do not expose a battery pack or tool to fire or excessive temperature. Exposure to fire or temperature above 130 °C may
cause explosion.
 Follow all charging instructions and do not charge the battery pack or tool outside the temperature range specified in the
instructions. Charging improperly or at temperatures outside the specified range may damage the battery and increase
the risk of fire.
6) 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.
 Never service damaged battery packs. Service of battery packs should only be performed by the manufacturer or
authorized service providers.
 Do not wear gloves. Gloves may be entangled by the rotating parts or chips leading to personal injury.
 Keep your hands out of the drilling area while the tool is running. Contact with rotating parts or chips may result in personal
injury.
 Never remove chips from the drilling area while the tool is running. To remove chips, move the accessory away from the
workpiece, switch off the tool and wait for the accessory to stop moving. Use tools such as a brush or hook to remove chips.
Contact with rotating parts or chips may result in personal injury.

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EN
General safety warnings
Personal safety
WARNING
 Dress properly.
Do not wear loose clothing or jewelry. There is a
danger of being caught in moving parts. Wear a pair of
non-slip shoes. If your hair is long, wear a protective
hair covering to contain your hair.
 Always wear eye protection.
Corrective glasses are not considered as eye
protection. Always wear appropriate eye protection.
 Wear a dust mask.
When dust is generated in the workplace, wear a dust
mask.
 Use a dust collector or dust collection equipment
correctly.
If a dust collector or dust collection equipment are being
used, check that these are connected and used
properly. Use of a dust collector can reduce risk caused
by dust.
 When loud noise is generated in the workplace,
wear earplugs.
 Do not overreach.
Keep proper footing and balance at all times.
 Be on your guard when working.
Do not use the tool when you are tired.
When you use the tool, be sure about the handling method, how to work and pay sufficient attention to the surrounding
environment.
 Never touch the tip of moving parts when the tool is running.
Also, do not direct the tip of moving parts toward people or animals.
 Be aware of tool vibration and recoil. Some tools can cause a considerable amount of vibration.
Depending on how the product is operated, the type of tool setting, and the length of operation, it could place a tremendous burden
on your hands, arms and body. The tool could cause a vibration injury or tendonitis. Avoid long-term use and take appropriate
breaks. Consult a doctor if you experience any discomfort or pain while
operating the tool.
Protective cap
Dust mask
Work clothing
Safety shoes
Earplugs
Eye protection

2
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Work area safety
WARNING
 Do not use the tool at home.
This is a professional tool (industrial or work tool for business). Do not bring the tool home and use it there.
 Keep the work area clean.
Working in a messy work area or work table could cause an accident.
 Be cautious about the work area.
Do not expose the tool to rain.
Do not use the tool in a damp or wet place.
Keep the work area well lit.
 Do not operate the tool in an explosive atmosphere, such as in the
presence of flammable liquids (thinner, lacquer, gasoline, etc.) or
gas.
 Do not let children come close to the work area.
Keep children and bystanders away while operating the tool.
 Some tools generate loud noise.
Check that the noise regulations of each area are complied with.
 When work must be done in high locations, make sure there is
nobody underneath the work area.
If the tool or material is dropped, it could cause an accident or
injury.
 Before starting operation, make sure that there is no conduit,
water pipe or gas pipe by your work area.
If a tool touches a buried object, it could cause electrical shock or leakage, which could cause an accident.
Before starting to work
WARNING
 Perform inspection before using the tool.
Before using the tool, check for loose screws on the tool and for damage on the protective cover or other parts,
and make sure that the tool operates normally and demonstrates prescribed functions.
Check the position adjustment and tightening status of moving parts, parts damage, attachment status, and all
other locations for issues that could affect operation.
For parts replacement and repair, follow the instructions indicated in the instruction manual.
If there are no instructions in the instruction manual, contact the retailer where you purchased the tool or the nearest office
of Nitto Kohki Group. (see the back cover of this manual).
Do not use the power tool if the switch does not turn it ON and OFF.
 Make sure to properly attach the tip tool.
If the tip tool is not attached properly, there is a risk of jumping out or damage, which could result in injury.
 After adjustment, be sure to remove tools such as spanners, wrenches, etc.
 Use appropriate tools.
Do not force small tools to do the job of a heavy-duty tool. Do not use tools for purposes not intended.
 Do not use tools in an unreasonable manner.
When the specifications are followed, tools can be used efficiently and safely.
 Secure workpieces.
Where possible use clamps or a vise to hold the work. It is safe to hold the workpieces by clamps or a vise since both hands
can be used for operation.
Precautions on Use

3
EN
Handling tools
WARNING
 Storing the tool and battery.
When the tool and battery are not used, store the tool and battery in a dry location at a temperature less than 50°C.
Also, store the tool out of the reach of children.
 Be cautious about how the tool is carried.
Do not carry the tool with your hand touching the operation switch.
Do not carry the tool by holding any part other than the handle.
 Do not leave the tool while the tool is still running.
Do not leave the work area until you turn off the operation switch, remove the battery and the tool completely stops.
 Do not allow the following chemicals to come into contact with the tool, as parts could deteriorate.
Acetone, benzine, thinner, ketone, ether, trichloroethylene, and other similar chemicals
Maintenance and inspection
WARNING
 Do not disassemble or alter the tool.
Using the tool after disassembling or remodeling it could cause an accident or injury.
 Inspect tip tools and accessories.
Always inspect tip tools and accessories for damage or deterioration before attaching them to the tool.
If damage or deterioration is found, request repair from the retailer where you purchased the tool or the nearest office of
Nitto Kohki Group.
 Inspect for damaged sections.
Sufficiently check for damage on accessories or other parts, that the tool operates normally, and that work can
be performed appropriately.
If there are accessories or parts that have been damaged or could hinder work, request repair from the retailer
where you purchased the tool or the nearest office of Nitto Kohki Group.
 Request repair from a dedicated store.
For repair or replacement of parts, request service from the retailer where you purchased the tool or the nearest office of
Nitto Kohki Group.
Repair requires special knowledge and skills. If repair is performed at a place other than a specialty store, the
tool may not demonstrate its full performance, or it could lead to an accident or injury.
Request repair with the failed status kept intact. When requesting a repair, do not throw away damaged parts. It
could be important information for investigating the failure cause so do not change the status.
 Use genuine parts.
If inappropriate parts are used, it could cause an accident or injury.
Genuine parts are listed in the instruction manual or brochure. Inquire at the retailer where you purchased the
tool or the nearest office of Nitto Kohki Group.
 Do not remove the labels or plates on the tools.
If labels or plates are broken or peeling, for a replacement label or plate contact the retailer where you purchased
the tool or the nearest office of Nitto Kohki Group.

4
EN
General cordless power tool safety warnings
WARNING
 The operating temperature of the tool and battery is 0 to 40°C. The operating temperature of the charger is -10 to
40°C.
Do not use the tool and battery in high temperatures and low temperatures because there is a risk of failure and injury.
 Use only the battery specified for NITTO KOHKI rechargeable power tool.
Use the charger and battery specified by NITTO KOHKI that is listed in the instruction manual and catalog. There is a risk of
tool failure, injury, and damage if a battery other than the specified battery is used.
 Do not use a battery that has degraded.
There is a risk of fluid leaking from the battery, heat generation, and battery rupture.
 Use the charger with a power supply that satisfies the rated voltage.
Do not use a DC power supply or engine. There is a risk of failure and fire.
 Charge the battery in a well-ventilated location.
Do not cover the battery or charger with a cloth or any other material during charging. There is a risk of battery rupture,
smoke, and fire.
 When the charger is not being used, disconnect the power plug from the outlet.
There is a risk of electric shock, smoke, and fire.
 Do not use the charger or charge a battery in a location with flammable liquids and gases.
There is a risk of smoke, fire, and battery rupture.
 Do not use the charger or charge a battery in the rain or in a humid or wet location.
There is a risk of electric shock and smoke.
 Do not allow a short-circuit between the battery terminals.
There is a risk of smoke, fire, and battery rupture if a short-circuit is caused by moisture, chips, or other conductive materials.
 Be cautious about electric shock.
Do not touch the battery, charger power plug, terminals, or around those parts with wet hands. There is a risk of electric
shock.
 Turn OFF the tool switch and remove the battery from the tool in the following situations:
When the tool is not being used and when repairing the tool.
When changing accessories, such as the cutter.
When finished working and storing the tool.
In other situations when danger is expected.
 Prevent the tool from starting unexpectedly.
Confirm that the switch is turned OFF before attaching the battery. Do not touch the rotating parts and cutter when attaching
the battery.
 Use the specified accessories and attachments.
Use the specified accessories and attachments that are listed in this instruction manual and the NITTO KOHKI catalog.
There is a risk of accident and injury.
 Do not put the battery in flames.
There is a risk of fire and battery rupture.
 If the battery leaks and fluid gets in the eyes, first wash the eyes well without rubbing using clean water, such as tap
water, and then promptly seek medical attention.
 There is a risk of skin irritation and injury if the battery leaks and the fluid gets on skin and clothes.
Promptly wash the clothes and skin well with clean water and then consult a physician.
 Ensure that chips and dust do not accumulate on the battery.
Ensure that the battery is not exposed to chips during work.
When the battery is not used, do not leave the battery in a location where it is exposed to chips and dust.
When storing the battery, clean off chips and dust from the battery and store it separately from metal components.
Do not stick nails in the battery or expose it to strong shocks.
 Do not heat the battery or expose it to high pressure, such as by placing the battery in a microwave or high-
pressure vessel.
 If the battery leaks or produces a foul odor, promptly remove the battery from all sources of fire.
 Do not use the battery anywhere other than in the tool.

5
EN
WARNING
 Stop charging the battery if charging does not finish even when the specified charging time is greatly exceeded.
 Do not use a battery that has significant damage to the exterior or is deformed.
 Do not use the tool in locations where powerful static electricity is generated.
 Use the appropriate tool for the work.
Do not use small tools and attachments for work that should be performed by large tools. There is a risk of injury.
 Do not handle the charger cord in a rough manner.
Do not carry the charger by holding the cord or pull on the cord to disconnect it from the outlet. Do not damage the cord,
such as by modifying it, bending it to an excessive degree, using it close to high-temperature objects, placing heavy objects
on it, pinching the cord between objects, or hanging the cord on metal objects. Do not pull, twist, or tightly wrap the cord.
 If the tool has corrosion, an unusual odor, generates heat, or you think there is another problem when the tool is
first used after purchase, stop using the tool and contact the retailer where you purchased the tool.
 Use the battery (BSL36A18, BSL36B18) and charger (UC18YSL3) manufactured by Koki Holdings Co., Ltd.
 If you notice any unusual odor, heat generation, discoloration, deformation, or something out of the ordinary when
using, charging, or storing the battery, immediately remove the battery from the tool or charger and stop using it.
 Carefully clean and maintain this cordless tool.
To work safely and efficiently, maintain the cutter so that it cuts well. There is a risk of injury if a damaged cutter is used.
 Pay sufficient attention when working.
When you use the cordless tool, be sure about the handling method, how to work, and pay sufficient attention to the
surrounding environment. Thoughtless actions can cause accidents and injury.
 Request repair of this cordless tool from a dedicated store. Do not disassemble, repair, or modify the tool, charger,
or battery.
If the tool, charger, or battery becomes hot or you notice a problem, request inspection and repair. Always inquire about
repairs at the retailer where you purchased the tool or the nearest office of Nitto Kohki Group. There is a risk of failure and
injury if you repair the tool, charger, or battery yourself.
 If the tool is dropped or hit, check to ensure there is no breakage, cracking, or deformation.
Breakage, cracking, or deformation could cause electric shock or injury.
 When the tool becomes overheated or you notice anything abnormal, stop using the tool immediately and request
that the tool be repaired.
 The noise-emission value in this manual is measured in accordance with the ISO standards.
The value may be also used for comparing this tool with another and in a preliminary assessment of exposure.
However, since the real value may change depending on the work condition, perform measurements in the actual usage
condition when using the tool. Do not operate the tool beyond the time set by the region where the tool is used.
 The vibration value in this manual is measured in accordance with the ISO standards.
The value may be also used for comparing this tool with another and in a preliminary assessment of exposure.
However, since the real value may change depending on the work condition, perform measurements in the actual usage
condition when using the tool. Do not operate the tool beyond the time set by the region where the tool is used.

6
EN
Product specific safety rules
WARNING
 Do not wear gloves when working.
Gloves can become entangled in the rotating parts and cause injury.
 Be cautious about chips when drilling.
When drilling, chips are also rotating together with the cutter. Keep your fingers and other body parts away from chips and
the cutter.
 When removing chips, release the magnetic force of the magnet.
Chips are sharp. Use a tool such as needle-nose pliers to remove the chips. Do not remove chips with your bare hands.
 Do not touch the cutter under any circumstances when the battery is attached to the tool.
Remove the battery when changing the cutter.
 Do not connect the charger to the power supply output from an engine-driven welder.
If the charger is connected to the power supply output from an engine-driven welder, a malfunction may occur, and the
electronic circuitry may be damaged.
 When not working, always release the magnetic force of the magnet and place the tool in a stable location.
If the tool is left with the magnet attached, the battery will discharge, and the magnetic force will disappear.
 Use only on magnetic materials.
Your tool cannot be used on non-magnetic materials, such as aluminum, stainless steel, copper, or alloys. The Magnet will
not adhere on non-magnetic materials. Attempting to use the Magnet on non-magnetic materials could cause an accident.
 Use caution during wall operation.
When using your tool on a wall, always use caution.
Never stand under the tool.
* Never allow anyone to stand under the tool.
* Never put any part of your body under the tool.
* If the tool falls, it could result in severe injury or death.
 Always use a workpiece that is at least 6 mm thick.
The workpiece must be at least 6 mm thick. If a workpiece is too thin,
the magnetic power of your tool will decrease. This will cause the tool
to move during operation. This could result in an accident.
 Use an iron back-up plate.
If the workpiece is less than 6 mm thick, you must use an iron back-
up plate that is more than 7 mm in thickness. The surface area of the
iron back-up plate must be greater than the surface area of the
magnet. An appropriate back-up plate is necessary to boost the
holding power of the Magnet. Use of an inappropriate back-up plate
can result in an accident. If the back-up plate is not thick enough or
big enough, the tool will come loose during operation. This can result
in an accident and severe injuries.
 Keep the attachment surface of the magnet and the surface of the workpiece clean.
If there is a gap between the attachment surface of the magnet and the workpiece, the holding force of the magnet will
weaken, and the main unit may twist. Always keep the surfaces clean. Do not allow foreign objects, such as chips, to
become stuck between the surfaces, and ensure that surfaces are flat and free from corrosion. Do not place the workpiece
on a location with holes. The tool will not operate because a sufficient magnetic force (holding force) cannot be maintained.
 The holding force of the magnet weakens when the battery level is low.
6 mm or
less
Add 7 mm steel plate
6 mm or more

7
EN
WARNING
 Drilling on a workpiece that is not level requires extra attention to safety.
When using the tool on a workpiece that is not level, use the lashing strap and auxiliary magnet ass'y.
 Use the lashing strap to prevent the tool from falling.
Use the included lashing strap and secure the main unit to the workpiece when there is a risk that the main unit will fall or tip
over due to the surface not being level, working in a high location, power loss, or the magnet lifting up.
If the lashing strap cannot be wrapped around the workpiece, such as when the workpiece is large, use the optional Auxiliary
Magnet Ass'y to prevent the main unit from falling. Secure the lashing strap tightly with the buckle.
 When finished drilling, be careful of the slug flying out of the cutter. When work must be done in high locations,
make sure there is nobody underneath the work area.
When finished drilling, the slug will fly out of the cutter with force. Wear protective gear. Do not let unprotected people come
close to the work area.
Especially when working in high locations, check for people underneath the work area and be sufficiently careful about where
the slug falls. The slug is also hot. Do not touch it with bare hands.
 Set the magnet parallel to the longer direction of the workpiece.
H-beam steel normally has warping. Set the magnet parallel to the longer direction of the workpiece to firmly attach the
magnet and use the tool stably. If the magnet is not firmly attached to the workpiece, the cutter may be damaged, and an
unexpected accident may occur.
Auxiliary Magnet Ass'y
Lashing Strap
Buckle

8
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WARNING
 Do not use a pilot pin that is not matched to the cutter.
The pilot pin differs according to the type, diameter, and length (depth) of the cutter.
Making a mistake in the combination of cutter and pilot pin can lead to an accident. Refer to "Combinations of Cutters and
Pilot Pin" (p. 20).
 Use the cutting oil for drilling only.
Refer to "Preparation of Cutting Oil" (p. 22).
 Ensure that the battery is properly attached.
 Do not discard the battery as regular garbage and do not throw the battery in fire.
For how to dispose of the battery, refer to "Disposal" (p. 35).
 Store the battery out of reach of children.
 Use the battery correctly according to the specifications label.
CAUTION
 This tool is not waterproof.
Use sufficient caution regarding the following points:
 If the electric drill or main unit becomes wet with cutting oil or water, immediately wipe it clean.
 Do not use the tool with wet hands.
 Do not use the tool in the rain.
 Use the CLO-2725 special cutting oil.
The battery may be damaged if cutting oil other than the included CLO-2725 special cutting oil gets on the battery. Do not
use a damaged battery.
 Check the battery for damage before use.
About drilling
WARNING
 Do not wear gloves when working.
Gloves can become entangled in the rotating part and cause injury.
 Maintain the cutter so that it cuts well.
The tool cannot work smoothly and be operated easily if a worn or damaged cutter is used, or an unexpected accident may
occur.
 Do not feed the handle with force when drilling.
There is a risk the tool may twist, or the cutter may break.
Do not feed the cutter with force when drilling because the JETBROACH teeth are thin and cutting resistance is lower when
drilling compared to a twist drill bit. Use caution not to push the cutter into the workpiece more than is necessary because the
cutting teeth may be damaged, and the service life of the cutter will be reduced.
In particular, use caution not to feed the handle with force when drilling thin sheet metal and when the battery is low (red
lamp is flashing or only one battery level display lamp is lit). Refer to "Battery Level Display" (p. 15).
 Be careful at the exit of the through hole.
There is a risk the tool may twist, or the cutter may break at the exit of the cutter. Feed the cutter slowly at the exit of the
hole.

9
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Other precautions
WARNING
 Do not use materials on which electrical welding work is being performed.
If the electrical welding is not sufficiently grounded, current can flow through the magnet, causing an irreparable failure in the
tool and accident due to malfunction.
CAUTION
 The color of the LED changes by the load on the electric drill. Use the tool when the LED is lit in green or yellow.
The LED is lit in green or yellow when the load on the electric drill is normal. The LED is lit or flashing in red when there is an
overload. Slow down the feeding of the cutter so that drilling can be performed when the LED is lit in green or yellow.
 When the electric drill is overloaded, the electric drill output is reduced and the LED flashes rapidly in red. If you
continue to use the electric drill in this state, the LED flashes in white.
If a load is applied to the electric drill when the LED is lit or flashing in red, the output is reduced to protect the electric drill
and battery. If you decrease the load before the electric drill fully stops by the overload, the electric drill returns to normal
operation. If the electric drill is automatically stopped, you can continue the work by setting the electric drill to the operation
standby state by pressing a switch other than the light switch and then pressing the start electric drill switch.
Charger safety precautions
WARNING
 Use only the dedicated battery.
Use only the specified battery (Koki Holdings Co., Ltd. BSL36A18). There is a risk of the battery rupturing causing injury and
damage if a battery other than the specified battery is used.
 Use the charger with the power supply listed on the ratings label.
Do not use a DC power supply, step-up transformer, or other type of transformer. There is a risk of abnormal heat generation
and fire.
 Do not charge the battery outside the operating temperature range of the charger.
The battery will not be charged correctly, and the service life of the battery will be reduced. There is also a risk of battery
rupture and fire.
 Charge the battery in a well-ventilated location.
Do not cover the battery or charger with a cloth or any other material during charging. There is a risk of battery rupture and
fire.
 When the charger is not being used, disconnect the power plug from the outlet.
There is a risk of electric shock and fire.
 Do not allow a short-circuit between the battery terminals.
If you place the battery in a nail pouch, there is a risk of short-circuit that may cause smoke, fire, and battery rupture.
 Be cautious about electric shock.
Do not touch the power plug of the charger with wet hands. There is a risk of electric shock.
 Do not use the charger or charge a battery in the rain or in a humid or wet location.
There is a risk of electric shock and smoke.
 Keep the work area well lit.
There is a risk of accidents when working in dark areas.
 Do not use the charger or charge a battery in a location with flammable liquids and gases.
There is a risk of explosion and fire which can cause accidents.
 Do not put the battery in flames.
There is a risk of battery rupture and the release of hazardous substances.

10
EN
CAUTION
 Keep the work area clean.
Working in a messy work area or work table could cause an accident.
 Do not let children come close to the work area.
Do not allow bystanders to touch the cord of the charger. There is a risk of injury.
Keep bystanders away from the work area. There is a risk of injury.
Persons who require special aid should not use this tool alone unless supervised or instructed to do so by a person
responsible for safety.
 When the tool is not being used, store it correctly.
Store the tool in a dry location that can be locked or is out of reach of children. There is a risk of accidents.
Do not store the battery in locations that may reach temperatures over 50°C (such as a metal box or inside a vehicle in
summer). This causes the battery to degrade and there is a risk of smoke and fire.
 Do not handle the charger cord in a rough manner.
Do not carry the charger by holding the cord or pull on the cord to disconnect it from the outlet.
Do not allow the cord near locations that are hot, oily, or have sharp corners.
Pay attention to the location where the battery is charged so that the cord is not damaged by being stepped on, pulled, or
exposed to excessive force. There is a risk of electric shock, short-circuit, and fire.
 Carefully clean and maintain the charger.
Before using the charger, inspect the power plug and cord. If the plug or cord is damaged, request repair from the retailer
where you purchased the tool or the nearest office of Nitto Kohki Group.
When using an extension cord for the charger, inspect it in advance. If the extension cord is damaged, replace it. There is a
risk of electric shock and fire due to short-circuit.
 Use an extension cord intended for outdoor use.
When charging the battery outdoors, use a flexible cord or flexible cable extension cord.
 Request repair of the charger from a dedicated store.
Only a service technician should disassemble, repair, or modify the charger and battery. There is a risk of injury due to fire
and abnormal operation.
If you notice a problem with the charger or batter, request inspection and repair.
Do not modify this charger. It is certified to the relevant safety standards.
Always request repairs at the retailer where you purchased the charger or the nearest office of Nitto Kohki Group. There is a
risk of accident and injury if you repair the charger yourself.
Precautions for connecting a USB device
CAUTION
 If an unexpected problem occurs, the data stored inside the connected USB device may be damaged or lost.
In case of accidents, always make a backup of the data in advance.
In the connection of a USB device, NITTO KOHKI bears no responsibility for damage to, or the loss of data stored inside the
connected USB device or for a failure of the connected device.

11
EN
Battery specific safety rules
WARNING
 Use the dedicated charger.
Please use the battery charger (UC18YSL3) manufactured by Koki Holdings Co., Ltd.
There is a risk of the battery rupturing causing injury and damage if a charger other than the specified charger is used.
 Do not allow a short-circuit between the battery terminals.
If you place the battery in a nail pouch, there is a risk of short-circuit that may cause smoke, fire, and battery rupture.
 Do not pour any conductive liquid, such as water, inside the battery.
There is a risk of heat generation, fire, and battery rupture.
 Do not expose the battery to rain and water.
There is a risk of failure and degradation.
 Do not put the battery in flames.
There is a risk of battery rupture and the release of hazardous substances.
 Do not use the battery if the terminals have deformed.
If the battery is attached to the tool, there is a risk of short-circuit that may cause smoke, and fire.
 Do not disassemble or modify the battery.
There is a risk of battery rupture and the release of hazardous substances.
 Ensure that chips and dust do not accumulate on the battery.
Before using the battery, check for chips and dust accumulated on the terminals.
Ensure that the battery is not exposed to chips during work. Ensure that the battery attached to the tool is not exposed to
chips and dust during work.
When the battery is not used, do not leave the battery in a location where it is exposed to chips and dust.
When storing the battery, clean off chips and dust and store the battery separately from metal components.
There is a risk of short-circuit that may cause smoke, fire, and battery rupture.
 Do not stick nails in the battery or expose it to strong shocks.
 Do not use a battery that has significant damage to the exterior or is deformed.
 Do not use the battery by reversing (+) and (-).
 Do not directly connect the battery to an output or cigarette lighter socket in a vehicle.
 Do not use the battery for any purpose other than for the specified devices.
 Do not heat the battery or expose it to high pressure, such as by placing the battery in a microwave or high-
pressure vessel.
 If the battery leaks or produces a foul odor, promptly remove the battery from all sources of fire.
 Do not use the tool in locations where powerful static electricity is generated.
 If you notice any unusual odor, heat generation, discoloration, deformation, or something out of the ordinary when
using, charging, or storing the battery, immediately stop using the battery and contact the retailer where you
purchased the tool or the nearest office of Nitto Kohki Group.
CAUTION
 The battery contains precision components. Do not expose it to strong shocks, such as by dropping it.
There is a risk of malfunction and other problems.
 Make sure to properly attach the battery to the tool.
There is a risk of injury if the battery falls off the tool.
 Do not expose the switch panel to a strong shock or tear at it.
 Do not discard the battery as regular garbage.
 If the battery leaks and fluid gets in the eyes, first wash the eyes well without rubbing using clean water, such as tap
water, and then promptly seek medical attention.
You may receive an eye injury if the fluid is left in the eye.
 If the battery leaks and the fluid gets on skin and clothes, promptly wash off the fluid with clean water, such as tap
water.
There is a risk of skin irritation and other problems.
 When the tool is not being used, store it correctly.
Do not store the battery in locations that may reach temperatures over 50°C (such as a metal box or inside a vehicle in
summer). This causes the battery to degrade and there is a risk of smoke and fire.

12
EN
Regarding Lithium-ion Battery Transportation
When transporting a lithium-ion battery, please observe the following precautions.
WARNING
 Notify the transporting company that a package contains a lithium-ion battery, inform the company of its power
output, and follow the instructions of the transportation company when arranging transport.
 Lithium-ion batteries that exceed a power output of 100Wh are considered to be in the freight classification of
Dangerous Goods and will require special application procedures.
 For transportation abroad, you must comply with international law and the rules and regulations of the destination
country.

13
EN
1 Application
This is a portable drilling machine with a Magnet, geared to drill mild steel (mild steel or equivalent).
The tool will be mounted on the workpiece to be drilled with the Magnet securely fastening the tool to the workpiece while drilling
takes place.
2 Checking Inside the Package
When you open the package box, check the contents of the package and also check for any damage that may have occurred
during transportation.
If an abnormality is found, request service from the retailer where you purchased the tool or the nearest office of Nitto Kohki Group.
Package content and accessories Quantity Check
(1) CLO-2725 (main unit) 1
(2) Oiler 1
(3) Hex. Socket Screw Key 4 1
(4) Feed Handle Ass'y 1
(5) Spanner 7×9 1
(6) Spanner 14 1
(7) Cutting Oil (0.5 l) 1
Package content and accessories Quantity Check
(8) Tube 4×7 1
(9) Lashing Strap 1
(10) Hex. Socket Set Screw with Dog
Point 8×28 1
(11) Pilot Pin 08025 (A1) 1
(12) Guard 1
(13) Instruction Manual (this document)
1

14
EN
3 Part Names
(1) LED
(2) Hose Nipple
(3) Feed Handle
(4) Grip
(5) Battery Removal Warning LED
(6) Filter
(7) Battery
(8) Stabilizer
(9) Light Switch
(10) Magnet Switch
(11) Stop Electric Drill Switch
(12) Start Electric Drill Switch
(13) Magnet
(14) Strap Attachment Plate
(15) Lock Screw
(16) Pilot Pin
(17) Cutter
(18) Arbor
(19) Sleeve
(
12)
(
11)
(
9)
(
8)