jcb 21-18AG Planning guide

POWER TOOL
INSTRUCTION & USER MANUAL
EN
21-18AG
Original Instructions
IM-18AG-EN
Iss: 11/2022

221-18AG
Instruction & User Manual
GENERAL WARNINGS & DISPOSAL
To reduce the risk of injury, the user must read the instruction manual.
The device must not be exposed to rain or immersed in water.
Do not allow any part of the device to come into contact with flames, or to
catch fire.
This symbol is used throughout this manual to warn the user about potential
risks. Please read & understand these sections before using the device.
Personal Protective Equipment (P.P.E.), such as ear defenders, eye protection,
safety gloves and a dust mask, must be worn during the operation of the
device.
This product has been marked with a symbol relating to removing electric
and electronic waste. The product should not be discarded with household
waste but must be returned to a collection system which conforms to the EU
Directive 2012/19/EU or the UK Waste Electrical and Electronic Equipment
Regulations 2013. It will then be recycled or dismantled in order to reduce
the impact on the environment. Electric and electronic equipment can be
hazardous for the environment and for human health since they contain
hazardous substances.
Do not expose battery pack or tool to fire or excessive temperatures.
The month and year of manufacture can be found within the product serial number e.g.
MMYYPPPAXXXXX. Where production month (MM) and production year (YY) are included.
21-18AG Designation of the tool: 18 - 18Vdc, AG - Angle Grinder
Do not dispose of batteries in household waste. Return exhausted batteries
to a local collection or recycling point.

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21-18AG
Instruction & User Manual
Contents
GENERAL POWER TOOL SAFETY WARNINGS 4
1. Work area safety 4
2. Electrical safety 4
3. Personal safety 4
4. Power tool use and care 5
5. Battery tool use and care 5
6. Service 6
TOOL SPECIFIC SAFETY WARNINGS 7
Safety Warnings Common for Grinding, Sanding, Wire
Brushing or Abrasive Cutting-Off Operations 7
Kickback And Related Warnings 9
CHARGER SAFETY 11
COMPONENT LIST 12
POWER TOOL TECHNICAL DATA 13
LITHIUM ION BATTERY TECHNICAL DATA 13
CHARGER TECHNICAL DATA 13
NOISE INFORMATION 13
VIBRATION INFORMATION 14
OPERATING INSTRUCTIONS 15
Intended Use 15
Battery 15
Auxiliary Handle 16
Guard 16
Changing Grinding Discs 16
ON/OFF Trigger 17
Surface Grinding 17
Edge Grinding (Cutting) 17
Surface Finishing with Sanding Flap Discs 18
Maintenance 18
Transport and Storage 18
WARRANTY STATEMENT 20
Terms and Conditions 20
EU/UK DECLARATION OF CONFORMITY 22

421-18AG
Instruction & User Manual
Read all safety warnings, instructions 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.
WARNING!
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
m Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
m 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.
m Keep children and bystanders away while
operating a power tool. Distractions can
cause you to lose control.
2. Electrical safety
m 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.
m 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.
m Do not expose power tools to rain or wet
conditions. Water entering a power tool will
increase the risk of electric shock.
m Do not abuse the cord. Never use the
cord for carrying, pulling or unplugging
the power tool. Keep the cord away from
heat, oil, sharp edges or moving parts.
Damaged or entangled cords increase the risk of
electric shock.
m 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.
m 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
m 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.
m 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.
m 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 energising power tools that have
the switch on invites accidents.
GENERAL POWER TOOL SAFETY WARNINGS

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21-18AG
Instruction & User Manual
m 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.
m Do not overreach. Keep proper footing
and balance at all times. This enables
better control of the power tool in unexpected
situations.
m Dress properly. Do not wear loose
clothing or jewellery. Keep your hair and
clothing away from moving parts. Loose
clothes, jewellery or long hair can be caught in
moving parts.
m 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.
m 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.
4. Power tool use and care
m 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.
m 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.
m 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.
m 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.
m 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.
m Keep cutting tools sharp and clean.
Properly maintained cutting tools with sharp
cutting edges are less likely to bind and are easier
to control.
m 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.
m 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
m 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.
m Use power tools only with specifically
designated battery packs. Use of any other
battery packs may create a risk of injury and fire.

621-18AG
Instruction & User Manual
m 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.
m 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.
m Do not use a battery pack or tool that is
damaged or modified. Damaged or modified
batteries may exhibit unpredictable behaviour
resulting in fire, an explosion or risk of injury.
m Do not expose a battery pack or tool to
fire or excessive temperature. Exposure
to fire or temperature above 130 °C may cause
explosion.
m 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
m 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.
m Never service damaged battery packs.
Service of battery packs should only be
performed by the manufacturer or authorized
service providers.

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21-18AG
Instruction & User Manual
TOOL SPECIFIC SAFETY WARNINGS
m Wear ear protectors. Exposure to noise
can cause hearing loss.
m Wear eye protection. Wear goggles
to prevent eyes from exposure to flying
particles.
m Wear a dust mask. Take protective
measures against inhalation of dust. Some
materials can contain toxic materials. Also
work with dust/ chip extraction when
connectable.
m Wear gloves when operating the
power tool or changing accessories.
Accessible metal parts on the tools and bits
may get extremely hot during operation.
Small bits of broken material may damage
bare hands.
Safety Warnings Common
for Grinding, Sanding, Wire
Brushing or Abrasive Cutting-Off
Operations
m This power tool is intended as
a grinder, sander, wire-brush
or cut-off tool. 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.
m Polishing is not recommended to
be performed with this power tool.
Cutting-Off operations are not
recommended unless a fully enclosed
blade guard is fitted. Operations for
which the power tool was not designed may
create a hazard and cause personal injury.
m Do not use accessories which
are not specifically designed
and recommended by the tool
manufacturer. Just because the accessory
can be attached to your power tool, it does
not assure safe operation.
m Use only wheel types that are
recommended for your power tool
and the specific guard designed for
the selected wheel. Wheels for which
the power tool was not designed cannot be
adequately guarded and are unsafe.
m The grinding surface of centre
depressed wheels must be mounted
below the plane of the guard lip. An
improperly mounted wheel that projects
through the plane of the guard lip cannot be
adequately protected.
m The guard must be securely attached
to the power tool 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, accidental contact
with the wheel and sparks that could ignite
clothing.
m Wheels must be used only for
recommended applications. For
example: do not grind with the side
of a cut-off wheel. Abrasive cut-off
wheels are intended for peripheral grinding,
side forces applied to these wheels may
cause them to shatter.

821-18AG
Instruction & User Manual
m Always use undamaged wheel flanges
that are of correct size and shape
for your selected wheel. Proper wheel
flanges support the wheel thus reducing
the possibility of wheel breakage. Flanges
for cut-off wheels may be different from
grinding wheel flanges.
m Do not use worn down wheels from
larger power tools. Wheels intended for
larger tools are not suitable for the higher
speed of a smaller tool and may burst.
m 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 can break and fly
apart.
m The outside diameter and the
thickness of your accessory must be
within the capacity rating of your
power tool. Incorrectly sized accessories
cannot be adequately guarded or controlled.
m Threaded mounting of accessories
must match the grinder spindle
thread. For accessories mounted
by flanges, the arbour hole of the
accessory must fit the locating
diameter of the flange. Accessories that
do not match the mounting hardware of the
power tool will run out of balance, vibrate
excessively and may cause loss of control.
m Do not use a damaged accessory.
Before each use inspect the accessory
such as abrasive wheels for chips
and cracks, backing pad for cracks,
tear or excess wear, wire brush for
loose or cracked wires. If the power
tool or accessory is dropped, inspect
for damage or install an undamaged
accessory. After inspecting and
installing an 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.
Damaged accessories will normally break
apart during this test time.
m Wear personal protective equipment.
Depending on application, use
face shield, safety goggles or safety
glasses. As appropriate, wear dust
mask, hearing protectors, gloves
and workshop apron capable of
stopping small abrasive or workpiece
fragments. The eye protection must be
capable of stopping flying debris generated
by various operations . The dust mask
or respirator must be capable of filtrating
particles generated by your operation.
Prolonged exposure to high intensity noise
may cause hearing loss.
m Keep bystanders a safe distance away
from work area. Anyone entering
the work area must wear personal
protective equipment. Fragments of
workpiece or of a broken accessory may fly
away and cause injury beyond immediate
area of operation.

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21-18AG
Instruction & User Manual
m Hold the power tool by insulated
gripping surfaces only, when
performing an operation where the
cutting tool may contact hidden
wiring. Contact with a “live” wire will also
make exposed metal parts of the power
tool “live” and could give the operator an
electric shock.
m 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 of your
control.
m Do not run the power tool while
carrying it at your side. Accidental
contact with the spinning accessory could
snag your clothing, pulling the accessory into
your body.
m Regularly clean the power tool’s
air vents. The motor’s fan will draw
the dust inside the housing and excessive
accumulation of powdered metal may cause
electrical hazards.
m Do not operate the power tool near
flammable materials. Sparks could ignite
these materials.
m Do not use accessories that require
liquid coolants. Using water or other
liquid coolants may result in electrocution or
shock.
Kickback And Related Warnings
m Kickback is a sudden reaction to a pinched
or snagged rotating wheel, backing pad,
brush or any other accessory. Pinching
or snagging causes rapid stalling of the
rotating accessory which in turn causes
the uncontrolled power tool to be forced
in the direction opposite of the accessory’s
rotation at the point of the binding.
m 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 toward or away
from the operator, depending on direction
of the wheel’s movement at the point of
pinching. Abrasive wheels may also break
under these conditions.
Kickback is the result of power tool misuse
and/or incorrect operating procedures or
conditions and can be avoided by taking proper
precautions as given below.
m Maintain a firm grip on the power
tool and position your body and
arm to allow you to resist kickback
forces. Always use auxiliary handle, if
provided, for maximum control over
kickback or torque reaction during
start-up. The operator can control torque
reactions or kickback forces, if proper
precautions are taken.
m Never place your hand near the
rotating accessory. Accessory may
kickback over your hand.

10 21-18AG
Instruction & User Manual
m 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.
m Use special care when working
corners, sharp edges etc. Avoid
bouncing and snagging the accessory.
Corners, sharp edges or bouncing have a
tendency to snag the rotating accessory and
cause loss of control or kickback.
m Do not attach a saw chain
woodcarving blade or toothed saw
blade. Such blades create frequent
kickback and loss of control.

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21-18AG
Instruction & User Manual
m To reduce risk of injury, only charge
JCB rechargable batteries. The
charger and battery packs are specifically
designed to work together. Other types of
batteries may burst causing fire and personal
injury.
m Do not allow any liquid to get inside
the charger. Electric shock may result.
m Do not expose the charger to rain or
snow.
m Under certain conditions with the
charger plugged into the power
supply, the exposed charging contacts
inside the charger can be shorted by
foreign materials. Foreign materials of a
conductive nature such as, but not limited
to, steel, wool, aluminium foil or any buildup
of metallic particles should be kept away
from charger cavities.
m Always unplug the charger from
the power supply when there is no
battery in the cavity.
m Unplug the charger from the power
supply before attempting to clean.
m Do not operate the charger with a
damaged cord or plug. Have them
replaced immediately.
m JCB battery chargers are designed
to operate on 230-240V AC input
voltage (Note: the dual charger can
additionally operate on 100-240 AC
input voltage). Do not attempt to use
them on any other supply voltage.
m This appliance can be used by
children aged from 8 years and above
and persons with reduced physical,
sensory or mental capabilities or
lack of experience and knowledge
if they have been given supervision
or instruction concerning use of
the appliance in a safe way and
understand the hazards involved.
Children shall not play with the appliance.
Cleaning and user maintenance shall not be
made by children without supervision.
m If the supply cord is damaged, it must
be replaced by the manufacturer, its
service agent or similarly qualified
persons in order to avoid a hazard.
CHARGER SAFETY
Read all safety warnings, instructions
and specifications provided with the
charger. 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.
WARNING!

12 21-18AG
Instruction & User Manual
COMPONENT LIST
5
6
1A. ON/OFF TRIGGER
1B. SAFETY INTERLOCK
2. 3 POSITION AUXILIARY HANDLE
3. SPINDLE LOCK
4. ADJUSTABLE GUARD
5. TOOL FREE LOCKING NUT
6. GRINDING DISC
7. LOWER PLATE
8. BATTERY RELEASE BUTTON
9. CHARGER*
10. BATTERY PACK* - PLEASE REFER TO TABLE ON
PAGE 13 FOR BATTERY INFORMATION
11. BATTERY TEST BUTTON AND CHARGE
INDICATOR*
7
3
2
1B 1A
4
8
*If applicable
9
10
11
Battery size shown for
illustrative purposes only

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21-18AG
Instruction & User Manual
POWER TOOL TECHNICAL DATA
Rated Voltage 18V d.c.
No Load Speed no: 8000/min
Sanding Disc Diameter 115mm
Product Weight (Body only, w/o battery) 1.5kg
NOISE INFORMATION
A-Weighted Sound Pressure (LpA)76.1 dB(A)
A-Weighted Sound Power (LwA)87.1 dB(A)
KpA & KwA 3 dB(A)
Wear ear protection when sound pressure is over 80 dB(A)
Noise emission values determined according to EN 60745-1 and EN 60745-2-3.
Charger Code Input Power Output
21-18VFC 220-240V AC, 50-60Hz, 70W 14.4 - 18V d.c. 2.4A
21-18VSFC 220-240V AC, 50-60Hz, 105W 14.4 - 18V d.c. 4.0A
21-18VDC 100-240V AC, 50-60Hz, 200W 20.5V d.c. 2 x 3.5A
CHARGER TECHNICAL DATA
LITHIUM ION BATTERY TECHNICAL DATA
Battery
Code
Battery
Size Voltage Battery Capacity
Charge Time
(Fast Charger)
Charge Time
(Super Fast Charger)
Charge Time
(Dual Charger)
21-20LI Small 18V 2.0Ah 45 mins 30 mins 35 mins
21-30LI Large 18V 3.0Ah 65 mins 40 mins 45 mins
21-40LI Large 18V 4.0Ah 90 mins 55 mins 60 mins
21-50LI Large 18V 5.0Ah 110 mins 65 mins 75 mins
Times given as a guide only. Battery charge and discharge times dependant on age, usage and condition.

14 21-18AG
Instruction & User Manual
The vibration emission value of the power
tool is tested under EN 60745-1 and EN
60745-2-3, and can vary during operation
depending on the following usage conditions:
WARNING!
m How the tool is used and the materials
being cut or drilled.
m The tool being in good condition and well
maintained.
m Using the correct accessory for the tool and
ensuring it is sharp and in good condition.
m The tightness of the grip on the handles and
if any anti-vibration accessories are used.
m The tool being used as intended by its
design and these instructions.
m The declared vibration total value may also be
used in a preliminary assessment of exposure.
THIS TOOL MAY CAUSE HAND-ARM
VIBRATION SYNDROME (HAVS) IF USAGE
IS NOT ADEQUATELY MANAGED.
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. These include times when the tool is
switched off and when it is running idle but
not actually doing work. This may significantly
reduce the total exposure level over the
working period, helping to minimize your
vibration exposure risk.
WARNING!
m ALWAYS use sharp chisels, drills and blades.
m Maintain this tool in accordance with these
instructions and keep well lubricated (where
appropriate).
m If the tool is to be used regularly then invest
in anti-vibration accessories.
m Avoid using tools in temperatures of 10°C
or less.
m Plan your work schedule to spread any high
vibration tool use across a number of days.
VIBRATION INFORMATION
Vibration total values (triax vector sum) determined according to EN 60745-1 and
EN 60745-2-3
Vibration Emission
Value (ahAG)
Main Handle 2.9 m/s2
Auxiliary Handle 2.4 m/s2
Uncertainty (K) 1.5 m/s2
Wear hearing protection. The effects of
noise can cause a loss of hearing. The above-
mentioned noise emission values were
measured in accordance with a standardised test
procedure and can be used to compare one
power tool with another. The above-mentioned
noise emission values can also be used for the
preliminary assessment of exposure.
WARNING! The noise emissions during the actual use of
the power tool may differ from the above-
mentioned values depending on the power
tool being used, in particular on the type
of workpiece being processed. Try to keep
emissions as low as possible, for example by
limiting your working time. In this regard, all
the operational cycle phases must be taken into
consideration (such as the times when the tool is
switched off or running idle).

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21-18AG
Instruction & User Manual
OPERATING INSTRUCTIONS
Intended Use
This angle grinder is intended for grinding, edge
grinding (cutting) and surface finishing of metal,
stone and ceramic objects and surfaces.
This power tool must not be modified or used
for any other purposes than the ones described
in these instructions.
Battery
Make sure the ON/OFF Trigger (1A) is
not operated when inserting or removing
the battery. Use only JCB batteries:
21-20LI, 21-30LI, 21-40LI, 21-50LI.
NOTE
m Do not use excessive force when
inserting the JCB battery in the
power tool. An incorrectly connected
battery can damage the battery terminals or
the battery socket on the tool.
m Use the button (12) on the battery to check
the charging status; 4 red LEDs indicates
fully charged, where 1 indicates low battery
status.
Charging The Battery
After charging for the first time, ensure the
battery is completely discharged before
placing on charge again. Repeat this charging
and discharging cycle 4 to 5 times to ensure
battery is correctly conditioned.
WARNING!
m Place the battery charger on a level and
stable surface. Plug the charger into a
suitable power point.
m Connect the battery to the charger so that it
clicks into place.
m Refer to the Battery Charge Level table
below for battery charger status as indicated
by LED lights.
m Unplug the charger from the power point
and remove the battery from the charger.
Battery Charge Level
Red
LED
Green
LED Battery Charge Status
Charger is connected to
mains power
Connected battery is
charging
Connected battery is fully
charged
Connected battery has a
charging fault
Charger is outside correct
operating temperature
range (<0˚C / >40˚C)
If the LEDs on the charger do not illuminate
when charging:
m Check that the charger’s mains plug is
properly plugged into the power point.
m Check that the battery is correctly inserted
in the charger.
Connecting the battery
m Connect the battery to the battery socket
on the power tool so that it clicks into place.
Removing the battery
m Press the battery release button (9) and
remove the battery from the tool.

16 21-18AG
Instruction & User Manual
Auxiliary Handle
m Choose the position that provides the most
comfortable and safest handling. Screw the
auxiliary handle onto the top, left or right of
the machine head as required.
Guard
m Fit the guard as shown in the illustration.
Adjust the clamping force of the locking arm
by tightening the hex screw out or in when
the locking arm is unloaded.
Changing Grinding Discs
To remove an attached disc:
m Press down the spindle lock button (3).
m Lift up the release tab on the tool free
locking nut (5). Turn anti-clockwise to
release.
m Slowly rotate the grinding disc manually
while holding in the spindle lock button.
m Make sure the spindle lock button engages
into the shaft during slow rotation of the
grinding disc.”
m Unscrew the tool free locking nut (5) from
the output shaft, loosening the grinding
wheel (6).
m Remove the grinding wheel from the lower
plate (7).
m If storing the angle grinder without a disc,
reinstall the tool free locking nut (5).
To attach a new disc:
m Align the flats on the lower plate (7) with the
flats on the output shaft.
m Place the grinding wheel (6) on the lower
plate, carefully checking the boss of the
lower plate fits securely in the mounting
hole of the grinding disc.
m Screw the tool free locking nut (5) onto the
output shaft, on top of the grinding wheel,
carefully checking the boss of the locking
nut fits securely in the mounting hole of the
grinding disc.
m Press down the spindle lock button (3)
while slowly manually turning the new
grinding disc until the spindle lock fully
engages in the output shaft.
m Use the tab on the tool free locking nut (5)
to fully tighten.
m Release the spindle lock button once the
locking nut is fully tightened.
During all work undertaken with the tool,
the auxiliary handle must be mounted.
WARNING!
Switch off the tool and disconnect the power
(remove battery/unplug as appropriate)
before changing grinding discs.
WARNING!
Grinding and cutting discs become very hot
while working; do not touch until they have
cooled & always use gloves.
Pay attention to the dimensions of the
grinding disc. The mounting hole diameter
must fit the lower plate without play. Do not
use reducers or adapters.
Actuate the spindle lock button only when
the grinder output shaft is at a standstill.
NOTE
Check the direction of rotation of the
accessory matches the direction of rotation
marked on the power tool!
NOTE

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21-18AG
Instruction & User Manual
ON/OFF Trigger
The ON/OFF Trigger (1A) has a safety-
interlock (1B) to prevent accidental
operation.
NOTE
m To start the power tool, operate the ON/
OFF Trigger. Initially move the safety-
interlock switch left or right and squeeze the
ON/OFF Trigger to operate.
m To stop the power tool, release the ON/
OFF Trigger. Note that the safety-interlock
automatically re-engages as soon as the
trigger is released.
Using the pressure release function of the
ON/OFF Trigger gives you added safety.
Letting go will make the power tool stop
itself.
NOTE
Surface Grinding
m Allow the power tool to reach full speed
before touching the wheel to the work
surface.
Do not use edge grinding/ cutting wheels for
surface grinding applications. These wheels
are not designed for side pressures encoun-
tered with surface grinding - wheel breakage
and serious personal injury may result.
A fully enclosed guard is required to be fitted
for cutting-off operations. Failure to fit a fully
enclosed guard for cutting-off operations may
result in serious personal injury.
WARNING!

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Instruction & User Manual
m Apply minimum pressure to the work
surface, allowing the power tool to operate
at high speed. Grinding rate is greatest when
the power tool is at high speed.
m Maintain a 20-30 degree angle between the
power tool and work surface.
m Continuously move the power tool in a
forward and back motion to avoid creating
gouges in the work surface.
m Remove the power tool from the work
surface before turning it off. Allow the wheel
to stop rotating before laying the power tool
down.
Edge Grinding (Cutting)
Wheels used for cutting and edge grinding
may break if they bend or twist while the
power tool is being used to do cut-off work
or deep grinding.
WARNING!
m Position yourself so that the open-underside
of the wheel is facing away from you.
m Allow the power tool to reach full speed
before touching the wheel to the work
surface.
m Apply minimum pressure to the work
surface, allowing the power tool to operate
at high speed. Grinding rate is greatest when
the power tool is at high speed.
m Once a cut has begun and a notch is
established in the workpiece, do not change
the angle of the cut. Changing the angle of
the cut will cause the wheel to bend and
may cause wheel breakage. Edge grinding
wheels are not designed to withstand side
pressures caused by bending.
m Remove the power tool from the work
surface before turning it off. Allow the wheel
to stop rotating before laying the power tool
down.
Surface Finishing with Sanding
Flap Discs
m Allow the power tool to reach full speed
before touching the disc on the work surface.
m Apply minimum pressure to the work
surface, allowing the tool to operate at high
speed. Sanding rate is greatest when the
tool is at high speed.
m Maintain a 5-10 degree angle between the
disc and work surface.
m Continuously move the disc in a forward
and back motion to avoid creating gouges in
the work surface.
m Remove the power tool from the work
surface before turning it off. Allow the disc
to stop rotating before laying the power tool
down.
If the guard has been removed to facilitate
sanding or wire brushing, it must be
reinstated after completion of the above
operation.
WARNING!
Maintenance
Switch off the power tool and disconnect the
power (remove battery/unplug) before clean-
ing and maintenance. This helps avoid the risk
of electric shocks and accidental starting.
WARNING!
m Wipe the tool with a dry or damp cloth.
Do not use a wet cloth. Do not use
detergent that contains solvent or

19
21-18AG
Instruction & User Manual
corrosive, abrasive additives. This risks
damaging the surfaces of the tool.
m Clear the tool vents and the accessory mount
of dust and dirt after each use. Do not
clean ventilation holes by inserting
sharp objects in them, such as
screwdrivers and other similar objects.
m Stubborn contamination in areas hard to
access can be removed with compressed air
(max 3. bar).
m Regularly check all fasteners, screws and
bolts to make sure that they are tight.
Tighten any loose screws immediately or
serious injury could occur.
Never open the power tool. The power
tool has no internal parts that the user can
service or repair. Never try to repair the
power tool yourself. Take to an authorised
service centre.
WARNING!
Transport and Storage
m If the power tool will remain unused for any
length of time, it should be stored in the
original packaging.
m Store the power tool and battery in a dry,
frost-free, well ventilated place.
m Keep all tools out of the reach of children.
m Always switch off the power tool and
disconnect it from the power supply
(remove the battery/unplug the power
cord) before transport.
m Always carry the power tool using the
purpose-designed handle.
m Ensure that the power tool is not at risk
of tipping over or exposed to excessive
vibration and shocks during transport,
especially if the power tool will be
transported by car or other vehicle.
Operating temperature: 0-40 °C
Storage temperature: 20-60 °C
NOTE

20 21-18AG
Instruction & User Manual
WARRANTY STATEMENT
JCB Power Tools are guaranteed against manufacturing defects for
up to 3 years from date of purchase by simply registering your prod-
uct online within 30 days. Proof of purchase required. This does not
affect your statutory rights.
To register your JCB Power Tool, please visit: jcb-tools.com
Online registration is required within 30 days to receive a warranty certificate to activate your
standard 3 year warranty. Registration is only available online via www.jcb-tools.com. You will
need your original sales receipt, the model number and the serial number (if applicable) of your
product. Kits comprising of two or more tools are excluded from single registration and must
registered individually for full warranty cover.
Upon successful registration, a warranty certificate will be available to download, print or save as
a PDF document. The relevant warranty certificate together with the original sales receipt will be
required in the event of any claim within the warranty period.
Should you choose not to register your product within 30 days of purchase, your statutory
consumer rights will not be affected. You will need the original sales receipt as proof of purchase in
the event of a warranty claim.
Warranty cover commences from the date of purchase on the retail sales receipt and is valid only
for JCB Tools products purchased within the UK bearing the CE and UKCA mark and a visible
serial number.
In the unlikely event your JCB Power Tool is subject to a manufacturing fault within the warranty
period, JCB Tools may repair the product by replacing defective parts free of charge at our
discretion. In the event parts are irreplaceable JCB Tools may replace your product free of
charge. The original product will remain the property of JCB Tools in this situation.
The above repair or replacement of products will be undertaken providing that:
m The product has been subject to fair wear and tear only.
m The product has not been subject to accidental or cosmetic damage.