Flex FX3211 User manual

Model:
Modelo:
Modèle:
OPERATOR’S MANUAL
MANUAL DEL OPERADOR
MANUEL DE L’UTILISATEUR
833-FLEX-496
(833-3539-496)
For English
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24V DIE GRINDER
MEULE À RECTIFIER LES MATRICES DE 24 V
AMOLADORA DE TROQUEL DE 24 V
FX3211

-2-
SAFETY SYMBOLS
The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols
and the explanations with them deserve your careful attention and understanding. The symbol
warnings do not, by themselves, eliminate any danger. The instructions and warnings they give are
no substitutes for proper accident prevention measures.
WARNING Be sure to read and understand all safety instructions in this Operator’s Manual,
including all safety alert symbols such as “DANGER,” “WARNING,” and
“CAUTION” before using this tool. Failure to follow all instructions listed below may result in electric
shock, re, and/or serious personal injury.
The denitions below describe the level of severity for each signal word. Please read the manual and
pay attention to these symbols.
This is the safety alert symbol. It is used to alert you to potential personal
injury hazards. Obey all safety messages that follow this symbol to avoid
possible injury or death.
DANGER DANGER indicates a hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING WARNING indicates a hazardous situation which, if not avoided, could result
in death or serious injury.
CAUTION CAUTION, used with the safety alert symbol, indicates a hazardous situation
which, if not avoided, will result in minor or moderate injury.
Damage Prevention and Information Messages
These inform the user of important information and/or instructions that could lead to equipment or
other property damage if they are not followed. Each message is preceded by the word “NOTICE”,
as in the example below:
NOTICE: Equipment and/or property damage may result if these instructions are not followed.
WARNING The operation of any power tools can result in foreign
objects being thrown into your eyes, which can result in
severe eye damage. Before beginning power tool operation, always wear
safety goggles or safety glasses with side shields and a full face shield when
needed. We recommend a Wide Vision Safety Mask for use over eyeglasses
or standard safety glasses with side shields. Always use eye protection which
is marked to comply with ANSI Z87.1.

-3-
IMPORTANT SAFETY WARNINGS
WARNING Read all safety warnings, instructions, illustrations and specications
provided with this power tool. Failure to follow all instructions listed below may
result in electric shock, re and/or serious injury.
SAVE ALL WARNINGS AND INSTRUCTIONS FOR FUTURE REFERENCE.
The term “power tool” in the warnings refers to your mains-operated (corded) power tool or battery-
operated (cordless) power tool.
Work area safety
Keep work area clean and well lit. Cluttered
or dark areas invite accidents.
Do not operate power tools in explosive
atmospheres, such as in the presence of
ammable liquids, gases or dust. Power
tools create sparks which may ignite the dust or
fumes.
Keep children and bystanders away while
operating a power tool. Distractions can cause
you to lose control.
Electrical safety
Power tool plugs must match the outlet.
Never modify the plug in any way. Do
not use any adapter plugs with earthed
(grounded) power tools. Unmodied plugs
and matching outlets will reduce risk of electric
shock.
Avoid body contact with earthed or
grounded surfaces, such as pipes, radiators,
ranges and refrigerators. There is an
increased risk of electric shock if your body is
earthed or grounded.
Do not expose power tools to rain or wet
conditions. Water entering a power tool will
increase the risk of electric shock.
Do not abuse the cord. Never use the cord
for carrying, pulling or unplugging the
power tool. Keep cord away from heat, oil,
sharp edges or moving parts. Damaged or
entangled cords increase the risk of electric
shock.
When operating a power tool outdoors, use
an extension cord suitable for outdoor use.
Use of a cord suitable for outdoor use reduces
the risk of electric shock.
If operating a power tool in a damp location
is unavoidable, use a ground fault circuit
interrupter (GFCI) protected supply. Use of a
GFCI reduces the risk of electric shock.
Personal safety
Stay alert, watch what you are doing and
use common sense when operating a power
tool. Do not use a power tool while you are
tired or under the inuence 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 nger 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.

-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.
Battery tool use and care
Recharge only with the charger specied by
the manufacturer. A charger that is suitable for
one type of battery pack may create a risk of re
when used with another battery pack.
Use power tools only with specically
designated battery packs. Use of any other
battery packs may create a risk of injury and
re.
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 re.
Under abusive conditions, liquid may be
ejected from the battery; avoid contact.
If contact accidentally occurs, ush 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 modied. Damaged or modied
batteries may exhibit unpredictable behavior
resulting in re, explosion or risk of injury.
Do not expose a battery pack or tool to re
or excessive temperature. Exposure to re or
temperature above 265 °F (130 °C) may cause
explosion.
Follow all charging instructions and do
not charge the battery pack or tool outside
the temperature range specied in the
instructions. Charging improperly or at
temperatures outside the specied range may
damage the battery and increase the risk of re.
Service
Have your power tool serviced by a
qualied 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 modify or attempt to repair the appliance
or the battery pack (as applicable) except as
indicated in the instructions for use and care.

-5-
SAFETY WARNINGS FOR DIE GRINDER
Safety instructions for all operations
Safety warnings common for grinding,
sanding, wire brushing, polishing,
carving or abrasive cutting-off
operations:
• This power tool is intended to function
as a grinder, sander, wire brush, polisher,
carving or cut-off tool. Read all safety
warnings, instructions, illustrations and
specications provided with this power
tool. Failure to follow all instructions listed
below may result in electric shock, re and/or
serious injury.
• Do not use accessories which are not
specically designed and recommended
by the tool manufacturer. Just because the
accessory can be attached to your power tool,
it does not assure safe operation.
• The rated speed of the accessories must
be at least equal to the maximum speed
marked on the power tool. Accessories
running faster than their rated speed can
break and y apart.
• 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 controlled.
• The arbor size of wheels, sanding drums
or any other accessory must properly t
the spindle or collet of the power tool.
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.
• Mandrel mounted wheels, sanding drums,
cutters or other accessories must be
fully inserted into the collet or chuck.
If the mandrel is insufciently held and/or
the overhang of the wheel is too long, the
mounted wheel may become loose and be
ejected at high velocity.
• Do not use a damaged accessory. Before
each use inspect the accessory such as
abrasive wheels for chips and cracks,
sanding drum for cracks, tear or excess
wear, wire brush for loose or cracked
wires. If 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.
• 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 ying debris
generated by various operations. The dust
mask or respirator must be capable of ltrating
particles generated by your operation.
Prolonged exposure to high intensity noise
may cause hearing loss.
• 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 y away and cause
injury beyond immediate area of operation.
• Hold power tool by insulated gripping
surfaces only, when performing an
operation where the cutting accessory may
contact hidden wiring. Cutting accessory
contacting a “live” wire may make exposed
metal parts of the power tool “live” and could
give the operator an electric shock.
• Always hold the tool rmly in your hand(s)
during the start-up. The reaction torque of
the motor, as it accelerates to full speed, can
cause the tool to twist.
• Use clamps to support workpiece
whenever practical. Never hold a small
workpiece in one hand and the tool in the
other hand while in use. Clamping a small
workpiece allows you to use your hand(s) to
control the tool. Round material such as dowel
rods, pipes or tubing have a tendency to roll
while being cut, and may cause the bit to bind
or jump toward you.
• 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.

-6-
• After changing the bits or making any
adjustments, make sure the collet nut,
chuck or any other adjustment devices
are securely tightened. Loose adjustment
devices can unexpectedly shift, causing loss
of control, loose rotating components will be
violently thrown.
• 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.
• 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.
• Do not operate the power tool near
ammable materials. Sparks could ignite
these materials.
• Do not use accessories that require liquid
coolants. Using water or other liquid coolants
may result in electrocution or shock.
• Store accessories in a cool dry place and
avoid freezing. Before use check accessory
for cracks and fractures, do not use if damage
is suspected.
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
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.
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.
• Maintain a rm grip on the power tool and
position your body and arm to allow you
to resist kickback forces. The operator can
control kickback forces, if proper precautions
are taken.
• 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.
• Do not attach a toothed saw blade. Such
blades create frequent kickback and loss of
control.
• Always feed the bit into the material in
the same direction as the cutting edge
is exiting from the material (which is the
same direction as the chips are thrown).
Feeding the tool in the wrong direction causes
the cutting edge of the bit to climb out of the
work and pull the tool in the direction of this
feed.
• When using rotary les, cut-off wheels,
high-speed cutters or tungsten carbide
cutters, always have the workpiece
securely clamped. These wheels will grab if
they become slightly canted in the groove, and
can kickback. When a cut-off wheel grabs, the
wheel itself usually breaks. When a rotary le,
high-speed cutter or tungsten carbide cutter
grabs, it may jump from the groove and you
could lose control of the tool.
Additional safety instructions for
grinding and cutting-off operations
Safety warnings specic for grinding
and abrasive cutting-off operations:
• Use only wheel types that are
recommended for your power tool and
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.
• For threaded abrasive cones and plugs
use only undamaged wheel mandrels with
an unrelieved shoulder ange that are of
correct size and length. Proper mandrels will
reduce the possibility of breakage.

-7-
• Do not “jam” a cut-off wheel or apply
excessive pressure. Do not attempt to make
an excessive depth of cut. Overstressing the
wheel increases the loading and susceptibility
to twisting or snagging of the wheel in the
cut and the possibility of kickback or wheel
breakage.
• Do not position your hand in line with and
behind the rotating wheel. When the wheel,
at the point of operation, is moving away from
your hand, the possible kickback may propel
the spinning wheel and the power tool directly
at you.
• When wheel is pinched, snagged 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 corrective action
to eliminate the cause of wheel pinching or
snagging.
• Do not restart the cutting operation in the
workpiece. Let the wheel reach full speed
and carefully reenter the cut. The wheel may
bind, walk up or kickback if the power tool is
restarted in the workpiece.
• 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.
• Use extra caution when making a “pocket
cut” into existing walls or other blind areas.
The protruding wheel may cut gas or water
pipes, electrical wiring or objects that can
cause kickback.
Additional safety instructions for wire
brushing operations
Safety warnings specic for wire
brushing operations:
• Be aware that wire bristles are thrown by
the brush even during ordinary operation.
Do not overstress the wires by applying
excessive load to the brush. The wire
bristles can easily penetrate light clothing and/
or skin.
• Allow brushes to run at operating speed
for at least one minute before using them.
During this time no one is to stand in front
or in line with the brush. Loose bristles or
wires will be discharged during the run-in time.
• Direct the discharge of the spinning wire
brush away from you. Small particles and
tiny wire fragments may be discharged at high
velocity during the use of these brushes and
may become imbedded in your skin.
• The maximum recommended diameter of
mounted wheels, threaded cones and plugs
shall not exceed 2-5/32” (55 mm) and that the
maximum recommended diameter of sanding
accessories shall not exceed 3-5/32” (80 mm).
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, cement, and
other masonry products.
– Arsenic and chromium from chemically-
treated lumber.
• Your risk from these exposures varies,
depending upon how often you do this type
of work. To reduce your exposure to these
chemicals:
– Work in a well-ventilated area.
– Work with approved safety equipment,
such as dust masks that are specially
designed to lter out microscopic particles.
– Avoid prolonged contact with dust from
power sanding, sawing, grinding, drilling,
and other construction activities. Wear
protective clothing and wash exposed
areas with soap and water. Allowing dust to
get into your mouth or eyes or to lie on the
skin may promote absorption of harmful
chemicals.

-8-
SYMBOLS
IMPORTANT: Some of the following symbols may be used on your tool. Please study them and
learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better
and safer.
Symbol Name Designation/Explanation
V Volts Voltage
A Amperes Current
Hz Hertz Frequency (cycles per second)
W Watt Power
kg Kilograms Weight
min Minutes Time
s Seconds Time
Wh Watt-hours Battery capacity
Ah Ampere-hours Battery capacity
ø Diameter Size of drill bits, grinding wheels, etc.
n0No load speed Rotational speed, at no load
n Rated speed Maximum attainable speed
…/min Revolutions or reciprocations per
minute (rpm)
Revolutions, strokes, surface speed, orbits,
etc. per minute
O Off position Zero speed, zero torque...
1,2,3,…
I,II,III, Selector settings Speed, torque, or position settings. Higher
number means greater speed
Innitely variable selector with off Speed is increasing from 0 setting
Arrow Action in the direction of arrow
Alternating current (AC) Type or a characteristic of current
Direct current (DC) Type or a characteristic of current
Alternating or direct current
(AC / DC) Type or a characteristic of current
Class II tool Designates Double Insulated Construction
tools.
Protective earth Grounding terminal
Li-ion RBRC seal Designates Li-ion battery recycling
program
Read the instructions Alerts user to read manual

-9-
Symbol Name Designation/Explanation
Wear eye protection symbol Alerts user to wear eye protection
Always operate with two hands Alerts user to always operate with two
hands
Do not use the guard for cut-off
operations
Alerts user not to use the guard for cut-off
operations
SYMBOLS (CERTIFICATION INFORMATION)
Symbol Designation/Explanation
This symbol designates that this tool is listed by Underwriters Laboratories.
This symbol designates that this component is recognized by Underwriters
Laboratories.
This symbol designates that this tool is listed by Underwriters Laboratories, to
United States and Canadian Standards.
This symbol designates that this tool is listed by the Canadian Standards
Association.
This symbol designates that this tool is listed by the Canadian Standards
Association, to United States and Canadian Standards.
This symbol designates that this tool is listed by the Intertek Testing Services,
to United States and Canadian Standards.

-10-
FUNCTIONAL DESCRIPTIONS AND SPECIFICATIONS
DIE GRINDER
Fig. 1
Collet Nut
Collet
On/Off Switch
Filter Cover
Collet Wrench
Spindle-Lock
Button Handle Speed Control
Panel
Model No. FX3211
Rated Voltage 24V d. c.
No-load Speed 10000–28000 /min (RPM)
Collet Capacity 1/4 in. (6.35mm)
Recommended
operating
temperature
-4 – 104 °F (-20 – 40°C)
Recommended
storage
temperature
<122°F (<50°C)

-11-
ASSEMBLY
WARNING Detach the battery pack
from the tool before
performing any assembly or adjustments, or
changing accessories. Such preventive safety
measures reduce the risk of starting the tool
accidentally.
TO ATTACH/DETACH BATTERY PACK (FIG. 2)
To attach the battery pack:
Align the raised rib on the battery pack with the
grooves in the tool, and then slide the battery
pack onto the tool.
NOTICE: When placing the battery pack onto
the tool, be sure that the raised rib on the
battery pack aligns with the groove inside
the tool and that the latches snap into place
properly. Improper attachment of the battery
pack can cause damage to internal components.
To detach the battery pack:
Depress the battery-release button located
on the front of the battery pack, to release the
battery pack. Pull the battery pack out and
remove it from the tool.
INSTALL AND REMOVE ACCESSORIES
(FIG. 3, 4 AND 5)
WARNING Always be sure that the
tool is switched off and the
battery pack is removed before carrying out
any work on the tool.
WARNING Only use accessories with
shanks that match the
installed collet. Smaller shanks will not be
secure and could become loose during
operation. Ensure that the accessories used
meet the working conditions.
WARNING Danger of burns! The
accessories will become hot
during use. Wear gloves when changing
accessories.
To install the accessory
a. Remove the battery pack.
b. Clean the grinding spindle and all the parts to
be tted.
c. Press the spindle-lock button, loosen the
collet nut using the collet wrench and turning it
counterclockwise (Fig. 3).
Fig. 2
Battery Pack
Battery-Release
Button
Fig. 3
Collet
Wrench
Spindle-Lock
Button
Collet
Nut

-12-
d. Insert the accessory all the way into the collet.
e. Exposed shaft length cannot be more than
25/64” (10 mm). The shank of the accessory
must be inserted at least 25/32” (20 mm) into
the collet (Fig. 4).
f. Press the spindle-lock button, securely tighten
the clamping nut using the collect wrench and
turning it clockwise (Fig. 5).
NOTICE: To prevent damage to collet, avoid
excessive tightening of the collet nut when there
is no accessory inserted.
To remove the accessory
a. Press the spindle-lock button, loosen the
collet nut by using collet wrench and turning it
counterclockwise (Fig. 3).
b. Pull the accessory out.
WARNING Use protective gloves
when removing the
accessory from the tool, or rst allow it to
cool down. The accessory may be hot after
prolonged use.
WARNING Do not start the machine
when the clamping nut is
not secured to avoid objects ying out and
causing injuries and property damage.
CHANGING THE COLLET NUT (FIG. 6)
a. Remove the battery pack.
b. Press the spindle-lock button, loosen the
collet nut using the collet wrench and turning
it counterclockwise (Fig. 3).
c. Remove the collet nut from the spindle.
d. Position the new collet nut onto the spindle
(Fig. 6).
e. Press the spindle-lock button, securely
tighten the clamping nut using an open-ended
spanner and turning it clockwise (Fig. 5).
NOTICE: To prevent damage to collet, avoid
excessive tightening of the collet nut when there
is no accessory inserted.
Fig. 4
25/64” (10 mm) Maximum
Fig. 5
Collet
Wrench
Spindle-Lock
Button
Accessory
Fig. 6
Collet Nut

-13-
FILTER COVER (FIG. 7)
Using the lter cover will protect the interior of
the tool from debris and extend the life of the
tool.
a. Remove the battery pack.
b. To attach the lter cover, snap the hook of
one section of the lter cover into the groove
at tool’s foot rst, and then press the other
end into the other groove.
c. To remove the lter cover, pry the lter cover
away from the tool.
d. To clean the lter cover, tap it against a hard
surface or blow it clean with compressed air.
Fig. 7
Hook
Groove

-14-
ADJUSTMENTS
SPEED SELECTION (FIG. 8)
Your tool features a speed control panel with
memory function. After turning the tool off, the
tool will revert to the previous setting the next
time it is turned on.
Use the + or – speed selection button to
increase or decrease the speed. Each press
changes the speed by one level. The table
below shows the relationship between rotational
speed and the number of LEDs that shine on
the speed control panel.
The Number of LEDs
Speed (RPM )
ON OFF
10000
16000
22000
28000
WARNING To reduce the risk of loss
of control, do not adjust
the speed while the tool is running.
Fig. 8
LEDs
Speed Selection
Button

-15-
OPERATING INSTRUCTIONS
WARNING To reduce the risk of re,
personal injury, and
product damage due to a short circuit, never
immerse your charger or battery pack in uid
or allow a uid to ow inside them. Corrosive
or conductive uids, such as seawater, certain
industrial chemicals, and bleach or bleach-
containing products, etc. can cause a short circuit.
WARNING If any parts are damaged
or missing, do not operate
this product until the parts are replaced. Use
of this product with damaged or missing parts
could result in serious personal injury.
WARNING To prevent accidental
starting that could cause
serious personal injury, always remove the
battery pack from the tool when assembling
parts.
SWITCH BUTTON (FIG. 9)
The tool can be turned “ON” with the switch
button, located at the side of the motor housing.
The switch button can be locked in the “ON”
position, a convenience for long grinding
operations.
To turn the tool “ON” without locking it:
Slide the switch button forward by applying
pressure ONLY at the REAR portion of the
button.
When pressure is released the switch button will
snap back to the “OFF” position.
To lock the switch “ON”:
Slide the switch button forward, then press on
the FRONT portion of the button.
To unlock the switch:
Simply press and release the REAR portion of
the button. The switch is spring loaded and will
snap back automatically.
This die grinder must be used only with the battery packs and chargers listed below:
Battery Pack Charger
2.5Ah 3.5Ah 5.0Ah 6Ah 8.0Ah 10Ah 12Ah
FX0111 FX0321 FX0121 FX0331 FX0221 FX0341 FX0231 FLEX
FX0411
FLEX
FX0421
FLEX
FX0431
FLEX
FX0451
NOTICE: Please refer to the battery pack and charger manuals for detailed operating information.
Fig. 9
Switch Button

-16-
ACCESSORIES
Points, cones, plugs, grinding wheels and cut-
off wheels should be protected from:
• Wetness and extreme humidity.
• Any type of solvent.
• Extreme changes in temperature.
• Dropping and bumping.
Points, cones, plugs, grinding wheels and cut-
off wheels should be stored:
• In an organized way so points, cones, plugs or
wheels can be removed without disturbing or
damaging other points, cones, plugs or wheels
• With their safety information.
Points, cones, plugs, grinding wheels and cut-
off wheels should NOT be dropped, rolled or
bumped.
Discard points, cones, plugs, or wheels that
have been dropped, rolled, bumped, subjected
to extreme changes in temperature, or come
into contact with solvents or wetness.
WARNING Contact a distributor to
buy only recommended
accessories, others may be hazardous.
GENERAL APPLICATION (FIG. 10)
WARNING Always wear safety
goggles or safety glasses
with side shields during power tool
operation or when blowing dust. If operation
is dusty, also wear a dust mask.
WARNING Never reach into the
proximity of the rotating
accessory or collet nut when it is running!
WARNING Danger of burns! The
accessories and workpiece
will become hot during use. Wear gloves when
changing accessories or touching workpiece.
Keep hands away from the grinding area at all
times.
WARNING Sparks generated when
grinding metal. Make sure
that no combustible material is present in the
work area.
a. Attach the battery pack.
b. Set a speed that is suitable for the application
and accessory. If you have just installed an
accessory or are beginning a period of work,
test it by letting it spin for one minute before
applying it to the workpiece.
c. Use a clamp, vise or other practical means to
hold your workpiece.
d. Firmly grasp the tool.
e. Start the tool before applying it to workpiece
and let the tool come to full speed before
contacting the workpiece.
WARNING Never use an accessory that
has been dropped. Out-of-
balance or damaged accessories can mar
workpiece, damage the tool, and cause stress
that may cause accessory failure.
f. Move the tool evenly back and forth with
light pressure to achieve an optimum work
result. Pressure that is too strong reduces the
performance capability of the tool and causes
the tool to wear more quickly.
g. Lift the tool from the work before releasing the
switch. DO NOT turn the switch ON and OFF
while the tool is under load – this will greatly
decrease the switch life.
h. If the tool begins vibrating, immediately stop
the motor and check to see if the accessory
is dull. Dull accessories will cause the tool
to vibrate and could force the collet to y
off the tool. Always replace or sharpen dull
accessories.
i. Accessories are design for specic uses, only
use points, cones, plugs, grinding wheel and
cut-off wheels for applications for which they
were designed. Follow manufacturer's care
and use instructions.
Fig. 10

-17-
MAINTENANCE
SERVICE
WARNING Preventive maintenance
performed by
unauthorized personnel may result in
misplacing of internal wires and
components which could cause a serious
hazard. We recommend that all tool service be
performed by a FLEX Factory Service Center or
Authorized FLEX Service Station.
GENERAL MAINTENANCE
WARNING When servicing, use only
identical replacement
parts. Use of any other parts could create a
hazard or cause product damage. Periodically
inspect the entire product for damaged, missing,
or loose parts such as screws, nuts, bolts, caps,
etc. Tighten securely all fasteners and caps and
do not operate this product until all missing or
damaged parts are replaced. Please contact
customer service or an authorized service
center for assistance.
WARNING To avoid serious personal
injury, always remove the
battery pack from the charger/tool when
cleaning or performing any maintenance.
CLEANING
WARNING The tool may be cleaned
most effectively with
compressed dry air. Always wear safety
goggles when cleaning tools with
compressed air. Ventilation openings and
switch levers must be kept clean and free of
foreign matter. Do not attempt to clean by
inserting pointed objects through openings.
WARNING Certain cleaning agents
and solvents damage
plastic parts. Some of these are: gasoline,
carbon tetrachloride, chlorinated cleaning
solvents, ammonia and household detergents
that contain ammonia.
STORAGE
Store the tool indoors in a place that is inacces-
sible to children. Keep away from corrosive
agents.

-18-
FLEX 5-YEAR LIMITED WARRANTY
Chervon North America, Inc. ("Seller") warrants to the original purchaser only, that all FLEX 24V
products will be free from defects in material or workmanship for a period of ve years from date of
purchase when the original purchaser registers the product within 30 days from the date of original
retail purchase and retains their receipt as proof of purchase. THE 5-YEAR LIMITED WARRANTY
PERIOD IS CONDITIONED ON REGISTRATION OF THE PRODUCT WITHIN 30 DAYS OF
PURCHASE AND ONLY APPLICABLE TO FLEX 24V TOOLS, BATTERIES AND CHARGERS. If
the original purchaser does not register their product within 30 days, the foregoing limited warranty
will apply for a duration of three years. Product registration can be completed online at
www.registermyex.com.
24V Tools: 5-Year Limited Warranty with Registration
24V Batteries and Chargers: 5-Year Limited Warranty with Registration
Corded, 12V and 20V FLEX Legacy Products: 1-Year Limited Warranty, No Registration Benet
FLEX STACK PACK™Storage System: 1-Year Limited Warranty with Registration
Functional Attachments FT161 and FT421: 5-Year Limited Warranty with Registration / 3-Year
Limited Warranty without registration
Other Accessories and Attachments: No Warranty
SELLER’S SOLE OBLIGATION AND YOUR EXCLUSIVE REMEDY under this Limited Warranty
and, to the extent permitted by law, any warranty or condition implied by law, shall be the repair or
replacement of parts, without charge, which are defective in material or workmanship and which
have not been misused, carelessly handled, or repaired by persons other than a FLEX Authorized
Service Dealer. This warranty does not cover part failure due to normal wear and tear. To make a
claim under warranty, return the complete product, transportation prepaid, to any FLEX Authorized
Service Dealer. For Authorized FLEX Service Dealers, please visit www.registermyex.com or call
1-833-FLEX-496 (1-833-353-9496).
The 5-Year Limited Warranty does not apply to accessories, attachments or parts.
The 1-Year limited warranty for FLEX STACK PACK™ Storage System covers only tool boxes and
does not apply to system attachments and power tool accessories.
Any implied warranties applicable to a product shall be limited in duration equal to the duration of the
express warranties applicable to such product, as set forth in the rst paragraph above. Some states
in the U.S. and some Canadian provinces do not allow limitations on how long an implied warranty
lasts, so the above limitation may not apply.
FLEX is not responsible for direct, indirect, incidental or consequential damages. Some U.S. states
and Canadian provinces do not allow limitations on how long an implied warranty lasts and/or do
not allow the exclusion or limitation of incidental or consequential damages, so the above limitations
or exclusions may not apply. This limited warranty gives you specic legal rights, and you may also
have other rights which vary by state in the U.S. and by province in Canada.
This limited warranty applies only to products sold within the United States of America, Canada and
the commonwealth of Puerto Rico. For warranty coverage within other countries, contact your local
FLEX dealer.
© Chervon North America, 1203 E. Warrenville Rd., Naperville, IL 60563
www.expowertools.com
www.registermyex.com
1-833-FLEX-496 (1-833-353-9496)

-19-
SYMBOLES RELATIFS À LA SÉCURITÉ
La raison d’être des symboles relatifs à la sécurité est d’attirer votre attention sur des dangers
possibles. Il est important de vous familiariser avec les symboles relatifs à la sécurité et les
explications qui les accompagnent an de bien les comprendre. Les avertissements et les symboles
associés ne sufsent pas à éliminer tous les dangers. Les instructions et les avertissements qu’ils
donnent ne sauraient remplacer des mesures de prévention des accidents appropriées.
AVERTISSEMENT Lisez toutes les consignes de sécurité qui sont contenue dans ce
Mode d’emploi, y compris tous les symboles d’alerte relatifs à la
sécurité tels que « DANGER », « AVERTISSEMENT » et « MISE EN GARDE », et assurez-vous
que vous les comprenez bien avant de commencer à utiliser cet outil. La non-observation de toutes
les instructions gurant ci-après pourrait causer un choc électrique, un incendie et/ou des blessures
personnelles graves.
Les dénitions ci-dessous décrivent le niveau de gravité pour chaque terme signalant un danger.
Veuillez lire le mode d’emploi et lire la signication de ces symboles.
C’est le symbole d’alerte relatif à la sécurité. Il est utilisé pour vous
avertir de l’existence possible d’un danger de lésion corporelle.
Obéissez à tous les messages relatifs à la sécurité qui suivent ce
symbole pour éviter tout risque de blessure ou même de mort.
DANGER DANGER indique une situation dangereuse qui, si elle n’est pas
évitée, causera la mort d’une personne ou une blessure grave.
AVERTISSEMENT AVERTISSEMENT indique une situation dangereuse qui, si elle
n’est pas évitée, causera la mort d’une personne ou une blessure
grave.
MISE EN GARDE MISE EN GARDE, conjointement avec le symbole d’alerte en
liaison avec la sécurité, indique une situation dangereuse qui, si
elle n'est pas évitée, causera une blessure légère ou modérée.
Messages d’information et de prévention des dommages
Ils informent l’utilisateur d’informations et/ou d’instructions importantes qui pourraient entraîner des
dommages matériels ou aux équipements s’ils ne sont pas suivis. Chaque message est précédé par
le terme « AVIS », comme dans l’exemple ci-dessous :
AVIS : Un dommage matériel et/ou aux équipements peut survenir si ces instructions ne sont pas
suivies.
AVERTISSEMENT Pendant leur fonctionnement, les outils
électriques peuvent projeter des corps
étrangers dans les yeux de leur utilisateur et lui iniger de graves blessures
aux yeux. Portez toujours des lunettes de protection ou des lunettes de
sécurité à écrans latéraux et un masque couvrant tout le visage lors de
l’utilisation de ce produit. Nous recommandons de porter un masque de
sécurité à vision latérale large au-dessus des lunettes ordinaires ou des
lunettes de sécurité standard avec des écrans de protection sur les côtés.
Utilisez toujours un équipement de protection des yeux indiquant qu’il est
conforme à la norme ANSI Z87.1.

-20-
AVERTISSEMENTS IMPORTANTS RELATIFS À LA SÉCURITÉ
AVERTISSEMENT Lisez tous les avertissements relatifs à la sécurité, les
instructions, les illustrations et les spécications fournies avec
cet outil électrique. Le non-respect de toutes les instructions gurant ci-après pourrait causer un
choc électrique, un incendie et/ou des blessures graves.
CONSERVEZ TOUS LES AVERTISSEMENTS ET TOUTES LES INSTRUCTIONS
POUR RÉFÉRENCE FUTURE.
Le terme « outil électrique » dans les avertissements fait référence à votre outil électrique à cordon
électrique branché dans une prise secteur ou à votre outil électrique à piles (sans l).
Sécurité de la zone de travail
Gardez votre zone de travail propre et bien
éclairée. Des zones encombrées ou sombres
sont propices aux accidents.
N’utilisez pas des outils électriques dans
une atmosphère explosive, par exemple
en présence de liquides, de gaz ou de
poussières inammables. Les outils
électriques produisent des étincelles qui
risquent de mettre feu aux poussières ou aux
émanations de fumée.
Gardez les enfants et autres personnes
présentes à une distance sufsante lorsque
vous utilisez un outil électrique. Des
distractions risqueraient de vous faire perdre le
contrôle.
Sécurité électrique
La che de l’outil électrique doit
correspondre à la prise de courant. Ne
modiez jamais une che de quelque façon
que ce soit. N’utilisez pas d’adaptateurs
de ches avec des outils électriques mis
à la terre/à la masse. L’emploi de ches non
modiées et de prises de courant correspondant
naturellement aux ches réduira le risque de
choc électrique.
Évitez tout contact de votre corps avec des
surfaces mises à la terre ou à la masse telles
que des surfaces de tuyaux, de radiateurs,
de cuisinières et de réfrigérateurs. Il existe un
risque accru de choc électrique si votre corps
est en contact avec la terre ou la masse.
N’exposez pas d’outils électriques à la
pluie ou à un environnement humide. La
pénétration d’eau dans un outil électrique
augmentera le risque de choc électrique.
N’utilisez pas le cordon de façon abusive.
N’utilisez pas le cordon pour porter, tirer
ou débrancher l’outil électrique. Tenez
le cordon à distance de toute source de
chaleur, d’huile, de bords tranchants ou de
pièces mobiles. Des cordons endommagés
ou entortillés augmentent le risque de choc
électrique.
Lorsque vous utilisez un outil électrique à
l’extérieur, employez un cordon de rallonge
approprié pour un emploi à l’extérieur.
L’utilisation d’un cordon approprié pour une
utilisation à l’extérieur réduit le risque de choc
électrique.
S’il est inévitable d’utiliser un outil
électrique dans un environnement humide,
utilisez une alimentation protégée par un
disjoncteur de circuit de fuite à la terre.
L’utilisation d’un tel circuit réduit le risque de
choc électrique.
Sécurité personnelle
Faites preuve de vigilance et de bon sens, et
observez attentivement ce que vous faites
lorsque vous utilisez un outil électrique.
N’utilisez pas un outil électrique si vous êtes
fatigué(e) ou sous l’inuence de drogues,
d’alcool ou de médicaments. Un simple
moment d’inattention pendant que vous utilisez
un outil électrique pourrait causer une blessure
grave.
Utilisez des équipements de protection
personnelle. Portez toujours des
équipements de protection des yeux.
Des équipements de protection tels qu’un
masque de protection contre la poussière, des
chaussures de sécurité antidérapantes, un
casque ou un dispositif de protection de l’ouïe
utilisés en fonction des conditions réduiront le
nombre des blessures.