Worx MakerX WX741.9 Installation manual

WX741
WX741.X
SAFETY AND OPERATING MANUAL
ORIGINAL INSTRUCTIONS
20V Cordless Angle Grinder

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PRODUCT SAFETY
GENERAL POWER TOOL SAFETY WARNINGS
WARNING Read all safety warnings and 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.
1) Work area safety
a) Keep work area clean and well lit. Cluttered or dark areas invite accidents.
b) 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.
c) Keep children and bystanders away while operating a power tool. Distractions
can cause you to lose control.
2) Electrical safety
a) 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.
b) 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.
c) Do not expose power tools to rain or wet conditions. Water entering a power tool
will increase the risk of electric shock.
d) 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.
e) 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.
f) 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
a) 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.
b) 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.
c) 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

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tool. Carrying power tools with your finger on the switch or energising power tools that
have the switch on invites accidents.
d) 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.
e) Do not overreach. Keep proper footing and balance at all times. This enables
better control of the power tool in unexpected situations.
f) 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.
g) 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.
4) Power tool use and care
a) 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.
b) 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.
c) 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.
d) 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.
e) Maintain power tools. Check for misalignment or binding of moving parts,
breakage of parts and any other condition that may affect the power tools
operation. If damaged, have the power tool repaired before use. Many accidents
are caused by poorly maintained power tools.
f) Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp
cutting edges are less likely to bind and are easier to control.
g) Use the power tool, accessories and tool bits etc., in accordance with these
instructions and in the manner intended for the particular type of power tool,
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.
5) Battery tool use and care
a) 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.
b) Use power tools only with specifically designated battery packs. Use of any
other battery packs may create a risk of injury and fire.
c) When battery pack is not in use, keep it away from other metal objects, like

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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.
d) 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.
6) Service
a) 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.
SAFETY INSTRUCTIONS FOR ALL OPERATIONS
Safetywarningscommonforgrinding, sanding or abrasivecutting-offopera-
tions:
a) This power tool is intended to function as a grinder, sander or cut-off tool.
Read allsafetywarnings,instructions, illustrations andspecifications
provided with this power tool. Failure to follow all instructions listed below
may result inelectricshock, fireand/or seriousinjury.
b) Operations such as wire brushing or polishing are not recommended to be
performed with this power tool. Operations for which the power tool was not
designed may create ahazard andcausepersonal injury.
c) Do not use accessories which are not specifically designed and
recommendedbythe toolmanufacturer. Just becausethe accessory canbe
attached to your power tool, it does not assure safe operation.
d) The rated speed of the accessory must be at least equal to the maximum speed
marked on the power tool. Accessories running faster than their RATED SPEED
canbreak and flyapart.
e) The outside diameter and the thickness of your accessory must be within the
capacity rating of your power tool. Incorrectly sizedaccessoriescannot be
adequatelycontrolled.
f) Threaded mountingofaccessoriesmust match theGRINDER spindlethread.
For accessories mountedbyFLANGES, thearbour holeof the accessory must
fit the locating diameter of the FLANGE. Accessoriesthat donotmatchthe
mounting hardware of the power tool will run out of balance, vibrate excessively
and may cause lossofcontrol.
g) Donotuse adamagedaccessory.Before eachuseinspect theaccessory
such as abrasive wheels for chips and cracks, backing pad for cracks, tear
or excess wear. If power tool or accessory is dropped, inspect for damage
or installan undamagedaccessory.Afterinspecting andinstallingan
accessory, position yourself and bystanders away from the plane of the
rotating accessory and run the power tool at maximum no-load speed for one
minute. Damagedaccessories will normallybreak apart during this testtime.
h) Wearpersonalprotective equipment. Depending onapplication, useface

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shield, safetygoggles orsafetyglasses.As appropriate, weardustmask,
hearing protectors, glovesand workshopapron capableofstoppingsmall
abrasiveor workpiecefragments. The eye protection must be capable of
stoppingflying debrisgeneratedbyvariousoperations.The dustmask or
respiratormustbe capableoffiltrating particlesgeneratedbyyouroperation.
Prolonged exposure tohighintensitynoise may causehearingloss.
i) Keep bystanders a safe distance away from work area. Anyone entering
the workareamustwearpersonalprotectiveequipment. Fragmentsof
workpiece or of a broken accessory may fly away and cause injury beyond
immediateareaof operation.
j) Hold power toolbyinsulated grippingsurfaces only, when performingan
operation wherethecutting accessorymaycontact hiddenwiring. Cutting
accessory contacting a “live” wire may make exposed metal parts of the power
tool “live” and could give the operator an electric shock.
k) Never lay the power tool down until the accessory has come to a complete
stop. The spinning accessory may grab the surface and pull the power tool out
ofyour control.
l) Do not run the power tool while carrying it at your side. Accidentalcontact
with the spinningaccessory couldsnag yourclothing,pullingthe accessory
into your body.
m) Regularly clean the power tool’s air vents. The motor’s fan will draw the dust
inside thehousingand excessiveaccumulationofpowdered metal maycause
electrical hazards.
n) Do not operate the power tool near flammable materials. Sparks couldignite
these materials.
o) Donotuseaccessoriesthat require liquidcoolants. Using water or other
liquidcoolantsmay result in electrocutionorshock.
p) Your hand must hold on the handle when you are working. Loss of control can
cause personal injury.
FURTHER SAFETY INSTRUCTIONS FOR ALL OPERATIONS
Kickback and related warnings
Kickback is a sudden reaction to a pinched or snagged rotating wheel, sanding band,
brush oranyother accessory. Pinching orsnagging causesrapidstallingofthe
rotatingaccessory which inturncauses theuncontrolledpowertooltobe forced in
the direction opposite of the accessory’s rotation at the point of the binding.
For example, if an abrasive wheel is snagged or pinched by the workpiece, the
edge of the wheel that is entering into the pinch point can dig into the surface of
the material causing the wheel to climb out or kick out. The wheel may either jump
towardoraway fromtheoperator, dependingon direction of thewheel’smovement
at the point of pinching. Abrasive wheels may also break under these conditions.
Kickback isthe result ofpowertoolmisuseand/or incorrectoperatingprocedures or
conditions and can be avoided by taking proper precautions as given below.
a) Maintain a firm grip on the power tool and position your body and arm to

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allow you to resist kickback forces. The operatorcancontrol kickbackforces,
if proper precautions aretaken.
b) Never place your hand near the rotating accessory. Accessory maykickback
overyourhand.
c) Do not position your body in the area where power tool will move if kickback
occurs. Kickback will propel the tool in direction opposite to the wheel’s
movement at the point of snagging.
d) Use special care when working corners, sharp edges etc. Avoid bouncing and
snaggingthe accessory. Corners, sharpedges orbouncinghaveatendencyto
snagthe rotating accessory andcause loss ofcontrolor kickback.
e) Do not attach a saw chain woodcarving blade or toothed saw blade. Such
bladescreatefrequent kickback andloss of control.
ADDITIONAL SAFETY INSTRUCTIONS FOR GRINDING AND CUTTINGOFF OPERATIONS
Safety warnings specific forgrindingand abrasive cutting-off operations:
a) Use only wheel types that are recommended for your power tool and the
specificguarddesignedfortheselectedwheel. Wheels for which the power
tool was not designed cannot be adequately guarded and are unsafe.
b) The grinding surface of centre depressed wheels must be mounted below
theplane of the guardlip. An improperlymountedwheel thatprojectsthrough
the plane oftheguard lip cannot beadequately protected.
c) The guard must be securely attached to the power tool and positioned
for maximum safety, so the least amount of wheel is exposed towards
the operator. The guard helps to protect the operator from broken wheel
fragments, accidentalcontact with wheeland sparksthatcould ignite clothing.
d) Wheels must be used only for recommended applications. For example: do
not grind with the side of cut-off wheel. Abrasivecut-offwheelsare intended
for peripheral grinding, side forces applied to these wheels may cause them to
shatter.
e) Always use undamaged wheel flanges that are of correct size and shape for
yourselectedwheel. Proper wheel flanges support thewheel thus reducing
the possibility of wheel breakage. Flanges for cut-off wheels may be different
fromgrindingwheel flanges.
f) Do not use worn down wheels from larger power tools. Wheel intended for
larger power tool is not suitable for the higher speed of a smaller tool and may
burst.
ADDITIONAL SAFETY WARNINGS SPECIFIC FOR ABRASIVE CUTTINGOFF OPERATIONS
a) Do not“jam”the cut-off wheelorapplyexcessivepressure.Donot attempt
to make an excessive depth of cut. Overstressing thewheel increasesthe
loading and susceptibility to twisting or binding of the wheel in the cut and the
possibilityof kickback orwheel breakage.

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b) Do not position your body in line with and behind the rotating wheel. When
the wheel, at the point of operation, is moving away from your body, the possible
kickback may propel the spinning wheel and the power tool directly at you.
c) When wheel is binding or when interrupting a cut for any reason, switch off
the power tool and hold the power tool motionless until the wheel comes to a
complete stop. Never attempt to remove the cut-off wheel from the cut while
the wheel is in motion otherwise kickback may occur. Investigate and take
correctiveaction to eliminatethe cause ofwheel binding.
d) Do not restart the cutting operation in the workpiece. Let the wheel reach full
speed andcarefully reenterthe cut. The wheel may bind, walk up or kickback if
the power tool is restarted in the workpiece.
e) Support panels or any oversized workpiece to minimize the risk of wheel
pinching and kickback. Large workpieces tend to sag under their own weight.
Supports must be placed under the workpiece near the line of cut and near the
edge of the workpiece on both sides of the wheel.
f) Use extra caution when making a “pocket cut” into existing walls or other
blind areas. The protrudingwheel may cutgasor water pipes, electricalwiring
or objects that cancause kickback.
ADDITIONAL SAFETY INSTRUCTIONS FOR SANDING OPERATIONS
Safety Warnings Specific for Sanding Operations:
a) Do not useexcessivelyoversized sandingdiscpaper. Followmanufacturers
recommendations,when selectingsandingpaper. Larger sandingpaper
extending beyond the sanding pad presents a laceration hazard and may cause
snagging, tearing of the discor kickback.
SAFETY WARNINGS FOR BATTERY PACK
a) Do not dismantle, open or shred cells or battery pack.
b) Do not short-circuit a battery pack. Do not store battery packs
haphazardly in a box or drawer where they may short-circuit each other
or be short-circuited by conductive materials. 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.
c) Do not expose battery pack to heat or fire. Avoid storage in direct
sunlight.
d) Do not subject battery pack to mechanical shock.
e) In the event of battery leaking, do not allow the liquid to come into
contact with the skin or eyes. If contact has been made, wash the
affected area with copious amounts of water and seek medical advice.
f) Seek medical advice immediately if a cell or battery pack has been

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swallowed.
g) Keep battery pack clean and dry.
h) Wipe the battery pack terminals with a clean dry cloth if they become
dirty.
i) Battery pack needs to be charged before use. Always refer to this
instruction and use the correct charging procedure.
j) Do not maintain battery pack on charge when not in use.
k) After extended periods of storage, it may be necessary to charge
and discharge the battery pack several times to obtain maximum
performance.
l) Recharge only with the charger specified by Worx. Do not use
any charger other than that specifically provided for use with the
equipment.
m) Do not use any battery pack which is not designed for use with the
equipment.
n) Keep battery pack out of the reach of children.
o) Retain the original product literature for future reference.
p) Remove the battery from the equipment when not in use.
q) Dispose of properly.
r) Do not mix cells of different manufacture, capacity, size or type within a
device.
s) Do not remove battery pack from its original packaging until required for
use.
t) Observe the plus (+) and minus (–) marks on the battery and ensure
correct use.
SYMBOLS
To reduce the risk of injury, user must read instruction manual
Warning
Wear eye protection
Wear ear protection
Wear dust mask

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Wear protective gloves
Do not burn
Batteries may enter water cycle if disposed improperly, which can be
hazardous for ecosystem. Do not dispose of waste batteries as unsorted
municipal waste.
Li-Ion battery. This product has been marked with a symbol relating
to ‘separate collection’ for all battery packs and battery pack. It will
then be recycled or dismantled in order to reduce the impact on the
environment. Battery packs can be hazardous for the environment and
for human health since they contain hazardous substances.
Waste electrical products must not be disposed of with household
waste. Please recycle where facilities exist. Check with your local
authorities or retailer for recycling advice
Li-I on

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4
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567
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COMPONENT LISTS
1. ONOFF SWITCH
2. SPINDLE LOCK BUTTON
3. WHEEL GUARD
4. WHEEL
5. FLANGE
6. SCREW
7. HEX KEY M4
8. 6.4 MM BUTTERFLYTYPE BLADE ARBOR ADAPTER
Not all the accessories illustrated or described are included in standard
delivery.
TECHNICAL DATA
Type Designation WX741 WX741.X (741-designation of machinery,
representative of sander and grinder)
WX741 WX741.X*
Rated Voltage 20 V Max**
Motor type Brushless
No load speed 14000-24000 rpm
Blade size 50 mm
38 mm
Blade bore 10 mm (only for 50 mm blade)
6.4 mm Butterfly-type with adapter (only for 38 mm blade)
Spindle thread M4
Machine weight (bare tool) 212 g
* X=1-99, A-Z, M1-M9 there are only used for different customers, there are no safe
relevant changes between these models.
**Voltage measured without workload. Initial battery voltage reaches maximum of
20 volts. Nominal voltage is 18 volts.

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NOISE INFORMATION
A weighted sound pressure LpA: 75.2 dB(A)
A weighted sound power LwA: 86.2 dB(A)
KpA&KwA 3dB(A)
Wear ear protection.
VIBRATION INFORMATION
Vibration total values (triax vector sum) determined according to EN 60745:
Surface grinding or
abrasive cutting off
Vibration emission value ahAG = 2.931 m/s2
Uncertainty K = 1.5m/s²
Disc sanding
Vibration emission value ah,DS = 3.116 m/s2
Uncertainty K = 1.5 m/s²
The declared vibration total value may be used for comparing one tool with another, and
may also be used in a preliminary assessment of exposure.
WARNING: The vibration emission value during actual use of the power tool can
differ from the declared value depending on the ways in which the tool is used
dependant on the following examples and other variations on how the tool is used:
How the tool is used and the materials being cut or drilled.
The tool being in good condition and well maintained
The use the correct accessory for the tool and ensuring it is sharp and in good condition.
The tightness of the grip on the handles and if any anti vibration accessories are used.
And the tool is being used as intended by its design and these instructions.
This tool may cause hand-arm vibration syndrome if its use is not adequately
managed.
WARNING! To be accurate, an estimation of exposure level in the actual
conditions of use should also take account of all parts of the operating cycle such as the
times when the tool is switched off and when it is running idle but not actually doing the
job. This may significantly reduce the exposure level over the total working period.
Helping to minimise your vibration exposure risk.
ALWAYS use sharp chisels, drills and blades
Maintain this tool in accordance with these instructions and keep well lubricated (where
appropriate)
If the tool is to be used regularly then invest in anti vibration accessories.

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Plan your work schedule to spread any high vibration tool use across a number of days.
Category Model Capacity
20V Hub/HubX
WA7160 Input: 20 V 10 A Max.
Output: 20 V 10 A Max.
WA7161 Input: 20 V 10 A Max.
Output: 20 V 10 A Max.
Or Output: 5 V 2 A (USB port)
We recommend that you purchase your accessories from the same store that sold you
the tool. Refer to the accessory packaging for further details. Store personnel can assist
you and offer advice.
MakerX series tools and 20V Hub/HubX are specially designed to work together, so do
not attempt to use any other devices.

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A1 A2
A3 B
C D
E F

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A1 A2
A3 B
C D
E F

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OPERATING INSTRUCTIONS
NOTE Before using the tool, read the instruction book carefully.
INTENDED USE
The machine is intended for cutting, roughing and brushing metal and stone
materials without using water. For cutting metal, a special protection guard for
cutting (accessory) must be used.
ASSEMBLY
1. Mount the guard as needed. (See Fig.A1)
Press and hold the spindle lock button, assemble the wheel and flange, then use the
hex key to tighten. (See Fig. A2)
NOTE: Always ensure the workpiece is firmly held or clamped to prevent movement.
The angle grinder can work with Butterfly-style arbors such as the EZ-Lock ® discs
of Dremel®. Dremel and EZ-Lock are trademarks of Robert Bosch Tool Corporation.
(See Fig. A3)
2. Connect the angle grinder to the hub. (See Fig. B)
WARNING: Before operation, make sure the speed control button on the
hub is at the“Min“ position. (See Fig. C)
OPERATION
1. Confirm the speed control button is set to “Min”. Grasp the tool by the grip. Press
the on/off switch on the hub and that on the angle grinder to start the machine. (See
Fig. D)
CAUTION: Do not use damaged or worn accessories. Make sure the machine is in
perfect condition.
NOTE: Always start at no load to achieve maximum speed then start working. Do not use
excessive contact pressure! A correct and uniform speed enables better performance.
2.Adjust speed as needed. (See Fig. E)
NOTE: After usage, press the on/off switch on the hub and that on the angle grinder
to turn off the machine and disconnect it from the hub. For sake of safety, adjust the
speed control button to “Min” position once completing the operation.
3.Replace the disc. (See Fig. F)
Press and hold the spindle lock button and use the hex key to loosen.
NOTE: Before changing the accessory, make sure your machine is turned off and
disconnected from the hub or battery.
NOTE: 2 spare screws for the guard, and 1 spare blade flange have been included
with your tool, in case the original pieces become lost.
WARNING: Never use a cutting disc for roughing.

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MAINTENANCE
Remove the battery pack from the machine before carrying out any
adjustment, servicing or maintenance.
Your power tool requires no additional lubrication or maintenance.
There are no user serviceable parts in your power tool. Never use water or chemical
cleaners to clean your power tool. Wipe clean with a dry cloth. Always store your
power tool in a dry place. Keep the motor ventilation slots clean. Keep all working
controls free of dust. Occasionally you may see sparks through the ventilation slots.
This is normal and will not damage your power tool.
ENVIRONMENTAL PROTECTION
Waste electrical products must not be disposed of with household waste.
Please recycle where facilities exist. Check with your local authorities or
retailer for recycling advice.
TROUBLE SHOOTING
Rotation seems to stop or slow for no reason:
1. Check that the battery is fully charged and properly mounted onto the Hub.
2. Insure the power cord is completely inserted in the tool.
3. Check that the bit or blade is not being twisted or bound in the workpiece.
4. Try using less pressure on the accessory. A light touch is usually sufficient.
5. Try a faster rotation speed.
6. Make sure the tool has reached full rotation speed before engaging the workpiece.

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DECLARATION OF CONFORMITY
We,
Positec Germany GmbH
Postfach 32 02 16, 50796 Cologne, Germany
On behalf of Positec declare that the product
Description Battery operated angle grinder
Type WX741 WX741.X (741-designation of machinery, representative of sander
and grinder)
Function Peripheral and lateral grinding
Sanding
Complies with the following Directives:
2006/42/EC
2011/65/EU&(EU)2015/863
2014/30/EU
Standards conform to
EN 55014-1
EN 55014-2
EN 60745-1
EN 60745-2-3
The person authorized to compile the technical file,
Name Marcel Filz
Address Positec Germany GmbH
Postfach 32 02 16, 50796 Cologne, Germany
2020/07/22
Allen Ding
Deputy Chief Engineer,Testing & Certification
Positec Technology (China) Co., Ltd
18, Dongwang Road, Suzhou Industrial
Park, Jiangsu 215123, P. R. China

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DECLARATION OF CONFORMITY
We,
Positec (UK & Ireland) Ltd.,
PO Box 6242, Newbury, RG14 9LT, UK
On behalf of Positec declare that the product
Description Battery operated angle grinder
Type WX741 WX741.X (741-designation of machinery, representative of sander
and grinder)
Function Peripheral and lateral grinding
Sanding
Complies with the following Directives:
Supply of Machinery (Safety) Regulations 2008
Electromagnetic Compatibility Regulations 2016
The Restriction of the Use of Certain Hazardous Substances in Electrical and
Electronic Equipment Regulations
Standards conform to
BS EN 55014-1
BS EN 55014-2
BS EN 60745-1
BS EN 60745-2-3
The person authorized to compile the technical file,
Name Jim Kirkwood
Address Positec (UK & Ireland) Ltd.,
PO Box 6242, Newbury, RG14 9LT, UK
2020/07/22
Allen Ding
Deputy Chief Engineer,Testing & Certification
Positec Technology (China) Co., Ltd
18, Dongwang Road, Suzhou Industrial
Park, Jiangsu 215123, P. R. China

www.worx.com
Copyright © 2022, Positec. All Rights Reserved.
AR01553003
After-sales Service and Application
At www.worx.com you can order spare parts or arrange
the collection of a product in need of servicing or repair.
Tel. Service: 0345 202 9679
E-Mail: [email protected]