Jay-tech WK-6221S User manual


TABLE OF CONTENTS
SPECIFICATIONS ................................................................................................................................... 1
GENERAL POWER TOOL SAFETY WARNINGS .................................................................................. 1
Work area safety.................................................................................................................................. 1
Electrical safety.................................................................................................................................... 1
Personal safety .................................................................................................................................... 2
Power tool use and care...................................................................................................................... 2
Battery tool use and care .................................................................................................................... 3
Service ................................................................................................................................................. 3
CORDLESS DRILL SAFETY WARNINGS.............................................................................................. 3
SYMBOLS ................................................................................................................................................ 4
IMPORTANT SAFETY INSTRUCTIONS................................................................................................. 4
FUNCTIONAL DESCRIPTION ................................................................................................................ 5
Installing or removing battery cartridge............................................................................................... 5
Switch Action ....................................................................................................................................... 6
Electric brake ....................................................................................................................................... 6
Turning on the front lamp .................................................................................................................... 6
Reversing switch action....................................................................................................................... 7
Speed change...................................................................................................................................... 7
Adjusting the fastening torque............................................................................................................. 8
ASSEMBLY .............................................................................................................................................. 8
Installing or removing driver bit or drill bit ........................................................................................... 8
OPERATION ............................................................................................................................................ 9
Screw driving operation ....................................................................................................................... 9
Drilling operation................................................................................................................................ 10
Drilling in wood .................................................................................................................................. 10
Drilling in metal .................................................................................................................................. 10
Using the tool as a hand screwdriver ................................................................................................ 10
MAINTENANCE ..................................................................................................................................... 11
ACCESSORIES ..................................................................................................................................... 11

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SPECIFICATIONS
Model
WK-6221S
Capacities
Steel
10 mm (3/8")
Wood
32mm (1-1/4")
Wood screw
5.1 mm x 63 mm (7/32" X 2-1/2")
Machine screw
M6 (1/4")
No load speed
(RPM)
High (2)
0 - 1,350/min.
Low (1)
0 - 350/min.
Chuck capacity
0.8 mm (1/32") - 10 mm (3/8")
Overall length
189 mm (7-7/16")
Net weight
1.0 kg (2.2 lbs.)
Rated voltage
D.C. 18 V / 21 V max
Lion battery capacity
1300 mAh x 2
GENERAL POWER TOOL SAFETY WARNINGS
WARNING! 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
1. Keep work area clean and well lit. Cluttered or dark areas invite accidents.
2. 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.
3. Keep children and bystanders away while operating a power tool. Distractions can cause you to
lose control.
Electrical safety
4. 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.
5. 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.

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6. Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the
risk of electric shock.
7. 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.
8. 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.
9. If operating a power tool in a damp location is unavoidable, use a ground fault circuit interrupter
(GFCI) protected supply. Use of a GFCI reduces the risk of electric shock.
Personal safety
10. 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.
11. 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.
12. 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.
13. 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.
14. Do not overreach. Keep proper footing and balance at all times. This enables better control of the
power tool in unexpected situations.
15. Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing, and gloves away
from moving parts. Loose clothes, jewelry or long hair can be caught in moving parts.
16. 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.
Power tool use and care
17. 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.
18. 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.
19. 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.
20. 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.
21. 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

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repaired before use. Many accidents are caused by poorly maintained power tools.
22. Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
23. 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.
Battery tool use and care
24. 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.
25. Use power tools only with specifically designated battery packs. Use of any other battery packs
may create a risk of injury and fire.
26. 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 burns or a fire.
27. 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.
Service
28. 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.
29. Follow instruction for lubricating and changing accessories.
30. Keep handles dry, clean and free from oil and grease.
CORDLESS DRILL SAFETY WARNINGS
1. Use auxiliary handles supplied with the tool. Loss of control can cause personal injury. (If
supplied)
2. Hold power tools by insulated gripping surfaces when performing an operation where the cutting
tool may contact hidden wiring or its own cord. Contact with a "live" wire will make exposed metal
parts of the tool "live" and shock the operator.
3. Hold power tool by insulated gripping surfaces, when performing an operation where the fastener
may contact hidden wiring or its own cord. Fasteners contacting a "live" wire may make exposed
metal parts of the power tool "live" and could give the operator an electric shock.
4. Always be sure you have a firm footing. 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.

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9. 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
Direct current
No load speed
Revolutions or reciprocation per
minute
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. Do not short the battery cartridge:
1) Do not touch the terminals with any conductive material.
2) Avoid storing battery cartridge in a container with other metal objects such as nails, coins,
etc.
3) Do not expose battery cartridge to water or rain. A battery short can cause a large current
flow, overheating, possible burns and even a breakdown.
6. Do not store the tool and battery cartridge in locations where the temperature may reach or
exceed 50° C (122° F).
7. 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.
8. Be careful not to drop or strike battery.

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9. Do not use a damaged battery.
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.
FUNCTIONAL DESCRIPTION
CAUTION: Always be sure that the tool is switched off and the battery cartridge is removed
before adjusting or checking function on the tool.
Installing or removing battery cartridge
Always switch off the tool before insertion or removal of the battery cartridge.
To remove the battery cartridge, withdraw it from the tool while pressing the buttons of the
cartridge.
To insert the battery cartridge, hold it so that the battery cartridge front shape fits to that of the
battery installment opening and slip it into place. Always insert it all the way until it locks in place
with a little click. If not, it may accidentally fall out of the tool, causing injury to you or someone
around you.
Do not use force when inserting the battery cartridge. If the cartridge does not slide in easily, it is
not being inserted correctly.
1. Button
2. Battery cartridge

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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 JAY-tech service center.
Turning on the front lamp
CAUTION: Do not look in the light or see the source of the light directly.
Pull the switch trigger to turn on the light. The lamp keeps on lighting while the switch trigger is being
pulled. The lamp turns off 10 -15 seconds after releasing the trigger.
NOTE:
Use a dry cloth to wipe the dirt off the lens of lamp.
Be careful not to scratch the lens of lamp, or it may lower the illumination.
1. Switch trigger
1. Lamp

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Reversing switch action
This tool has a reversing switch to change the direction of rotation. Depress the reversing switch lever
from the A side for clockwise rotation or from the B side 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.
Speed change
To change the speed, first switch off the tool and then slide the speed change lever to the "2" side for
high speed or "1" side for low speed. Be sure that the speed change lever is set to the correct
position before operation. Use the right speed for your job.
CAUTION:
Always set the speed change lever fully to the correct position. If you operate the tool with the
speed change lever positioned halfway between the "1" side and "2" side, the tool may be
damaged.
Do not use the speed change lever while the tool is running. The tool may be damaged.
1. Reversing switch lever
1. Speed change lever

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Adjusting the fastening torque
The fastening torque can be adjusted in 18 steps by turning the adjusting ring so that its graduations
are aligned with the pointer on the tool body. The fastening torque is minimum when the number 1 is
aligned with the pointer and maximum when the marking is aligned with the pointer.
The clutch will slip at various torque levels when set at the number 1 to 18. The clutch is designed not
to slip at the marking.
Before actual operation, drive a trial screw into your material or a piece of duplicate material to
determine which torque level is required for a particular application.
ASSEMBLY
CAUTION: Always be sure that the tool is switched off and the battery cartridge is removed
before carrying out any work on the tool.
Installing or removing driver bit or drill bit
Turn the sleeve counterclockwise to open the chuck jaws.
Place the bit in the chuck as far as it will go. Turn the sleeve clockwise to tighten the chuck.
To remove the bit, turn the sleeve counterclockwise.
1. Pointer
2. Adjusting ring
3. Graduation
1. Sleeve

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OPERATION
CAUTION: Always insert the battery cartridge all the way until it locks in place. If not, it may
accidentally fall out of the tool, causing injury to you or someone around you.
Hold the tool firmly with one hand on the grip and the other hand on the bottom of the battery
cartridge to control the twisting action.
Screw driving operation
CAUTION:
Adjust the adjusting ring to the proper torque level for your work.
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 switch trigger as soon as the clutch
cuts in.
Make sure that the driver bit is inserted straight in the screw head, or the screw and/or bit may be
damaged.
NOTE:
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”)
2.2 - 2.5 (3/32” - 3/32”)
3.8 (5/32”)
2.5 - 2.8 (3/32” - 7/64”)
4.5 (11/64”)
2.9 - 3.2 (7/64” - 1/8”)
4.8 (3/16”)
3.1 - 3.4 (1/8” - 9/64”)
5.1 (13/64”)
3.3 - 3.6 (1/8” - 9/64”)
5.5 (7/32”)
3.7 - 3.9 (9/64” - 5/32”)
5.8 (7/32”)
4.0 - 4.2 (5/32” - 11/64”)
6.1 (15/64”)
4.2 - 4.4 (11/64” - 11/64”)

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Drilling operation
First, turn the adjusting ring so that the pointer points to the marking. Then proceed as follows.
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 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 hold-down 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.
Using the tool as a hand screwdriver
Switch off the tool.
Move the lock button to the locked position A.
Turn the tool.
NOTE:
This use is convenient for checking the screw driving.

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Do not use the tool for work requiring excessive force, such as tightening bolt or removing rusted
screws.
MAINTENANCE
CAUTION:
Always be sure that the tool is switched off and the battery cartridge is removed before
attempting to perform inspection or maintenance.
Never use gasoline, benzene, thinner, alcohol or the like. Discoloration, deformation or cracks
may result.
To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or adjustment should
be performed by JAY-tech Authorized or Factory Service Centers, always using JAY-tech replacement
parts.
ACCESSORIES
CAUTION: These accessories or attachments are recommended for use with your 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, please ask JAY-tech Service
Center.
Drill bits
Screw bits
Socket bits
Various type of JAY-tech genuine batteries and chargers
Plastic carrying case

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SERVICE PROCEDURE
If you have reason for complaint, or your device is defective, please contact your dealer or the service
division of JAY-tech GmbH to make arrangements for service procedures.
Service Hours: Monday - Thursday from 8:00 am to 5:00 pm
Friday from 8:00 am to 2:00 pm.
Phone No.: 02161 / 575 8950
Email: [email protected]
Please do not send your product to our address unless requested to do so by our service team. All costs and
the risk of loss are the responsibility of the sender.
We reserve the right to reject unrequested deliveries, or return the package at the sender’s expense.
EU DECLARATION OF CONFORMITY
Herewith the company JAY-tech GmbH declares that the described product complies with the EU directive
2014/30/EU and the other applicable for the product.
The full text of the EU Declaration of Conformity is available at the following Internet address:
www.jay-tech.de
The device carries the CE marking and complies with all required EU standards.
DIRECTIVE 2012/19/EU ON WASTE ELECTRICAL AND ELECTRONIC
EQUIPMENT (WEEE)
This symbol on the product or in the instructions means that your electrical and electronic
equipment should be disposed at the end of its life separately from your household waste.
There are separate collection systems for recycling in the EU.
For more information, please contact the local authority or your retailer where you
purchased the product.

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