Flex FX2141R User manual

Model:
Modelo:
Modèle:
OPERATOR’S MANUAL
MANUAL DEL OPERADOR
MANUEL DE L’UTILISATEUR
833-FLEX-496
(833-3539-496)
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24V CORDLESS CIRCULAR SAW
SCIE CIRCULAIRE SANS FIL DE 24 V
SIERRA CIRCULAR INALÁMBRICA DE 24 V
FX2141R

-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 Owner'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-
GENERAL POWER TOOL 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 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.

-5-
SAFETY INSTRUCTIONS FOR CIRCULAR SAWS
Cutting procedures
DANGER Keep hands away from
cutting area and the blade.
Keep your second hand on auxiliary handle,
or motor housing. If both hands are holding
the saw, they cannot be cut by the blade.
Do not reach underneath the workpiece. The
guard cannot protect you from the blade below
the workpiece.
Adjust the cutting depth to the thickness
of the workpiece. Less than a full tooth of
the blade teeth should be visible below the
workpiece.
Never hold the workpiece in your hands or
across your leg while cutting. Secure the
workpiece to a stable platform. It is important
to support the work properly to minimize body
exposure, blade binding, or loss of control.
Hold the power tool by insulated gripping
surfaces, 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.
When ripping, always use a rip fence or
straight edge guide. This improves the
accuracy of cut and reduces the chance of
blade binding.
Always use blades with correct size and
shape (diamond versus round) of arbor
holes. Blades that do not match the mounting
hardware of the saw will run off-center, causing
loss of control.
Never use damaged or incorrect blade
washers or bolt. The blade washers and
bolt were specially designed for your saw, for
optimum performance and safety of operation.
Kickback causes and related warnings
Kickback is a sudden reaction to a pinched,
jammed or misaligned saw blade, causing
an uncontrolled saw to lift up and out of the
workpiece toward the operator.
When the blade is pinched or jammed tightly
by the kerf closing down, the blade stalls and
the motor reaction drives the unit rapidly back
toward the operator.
If the blade becomes twisted or misaligned in
the cut, the teeth at the back edge of the blade
can dig into the top surface of the wood causing
the blade to climb out of the kerf and jump back
toward the operator.
Kickback is the result of saw misuse and/or
incorrect operating procedures or conditions
and can be avoided by taking proper
precautions as given below.
Maintain a rm grip with both hands on
the saw and position your arms to resist
kickback forces. Position your body to
either side of the blade, but not in line with
the blade. Kickback could cause the saw to
jump backwards, but kickback forces can be
controlled by the operator, if proper precautions
are taken.
When blade is binding, or when interrupting
a cut for any reason, release the trigger and
hold the saw motionless in the material until
the blade comes to a complete stop.
Never attempt to remove the saw from the
work or pull the saw backward while the
blade is in motion or kickback may occur.
Investigate and take corrective actions to
eliminate the cause of blade binding.
When restarting a saw in the workpiece,
center the saw blade in the kerf so that the
saw teeth are not engaged into the material.
If a saw blade binds, it may walk up or kickback
from the workpiece as the saw is restarted.
Support large panels to minimize the risk of
blade pinching and kickback. Large panels
tend to sag under their own weight. Supports
must be placed under the panel on both sides,
near the line of cut and near the edge of the
panel.
Do not use dull or damaged blades.
Unsharpened or improperly set blades produce
narrow kerf causing excessive friction, blade
binding and kickback.
Blade depth and bevel adjusting locking
levers must be tight and secure before
making the cut. If blade adjustment shifts while
cutting, it may cause binding and kickback.
Use extra caution when sawing into existing
walls or other blind areas. The protruding
blade may cut objects that can cause kickback.

-6-
Lower guard function
Check the lower guard for proper closing
before each use. Do not operate the saw if
the lower guard does not move freely and
close instantly. Never clamp or tie the lower
guard into the open position. If the saw is
accidentally dropped, the lower guard may be
bent. Raise the lower guard with the retracting
handle and make sure it moves freely and does
not touch the blade or any other part, in all
angles and depths of cut.
Check the operation of the lower guard
spring. If the guard and the spring are not
operating properly, they must be serviced
before use. Lower guard may operate
sluggishly due to damaged parts, gummy
deposits, or a build-up of debris.
The lower guard may be retracted manually
only for special cuts such as "plunge cuts"
and "compound cuts". Raise the lower guard
by the retracting handle and as soon as the
blade enters the material, the lower guard
must be released. For all other sawing, the
lower guard should operate automatically.
Always observe that the lower guard is
covering the blade before placing the saw
down on bench or oor. An unprotected,
coasting blade will cause the saw to walk
backwards, cutting whatever is in its path. Be
aware of the time it takes for the blade to stop
after switch is released.
ADDITIONAL SAFETY WARNINGS
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.

-7-
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 more safely.
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

-8-
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)
IMPORTANT: Some of the following symbols for certication information 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 more safely.
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.

-9-
FUNCTIONAL DESCRIPTIONS& SPECIFICATIONS
Brushless Circular Saw
Fig. 1
Auxiliary Handle Calibrated Depth Bracket
Calibrated for Standard Lumber Sizes
Upper Guard
Outer Washer Lower-guard Lift
Lever
Depth-of-cut Marks
Lock-off
Button
Main Handle
Depth-adjustment
Lever
Blade Bolt
Bevel-preset Knob
Bevel-
adjustment
Lever
Blade
Lower Guard
Trigger
Switch

-10-
Blade Wrench &
Storage Area
Saw Hook
Vacuum Hose Port
Calibrated
Bevel Quadrant
Spindle Lock
Bevel Indicator
LED light
Foot
Model No. FX 2141R
Rated Voltage 24 V d.c.
No-load Speed 6200/min (RPM)
Bevel Capacity 0 – 56°
Blade Diameter 7-1/4” (184 mm)
Blade Arbor Hole 5/8” (16 mm)
Max. Cutting Depth at 0° Bevel 2-5/8” (66 mm)
Max. Cutting Depth at 45° Bevel 1-7/8” (48 mm)
Max. Cutting Depth at 56° Bevel 1-1/2” (38 mm)
Recommended operating temperature -4 – 104°F (-20 – 40°C)
Recommended storage temperature < 122℉ (< 50℃)

-11-
ASSEMBLY
WARNING Detach the battery pack
from the tool before
making any assembly, adjustments or
changing accessories. Such preventive
safetymeasures 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: Make sure that the latch on the
battery pack snaps into place and that the
battery pack is secured to the tool before
beginning operation.
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.
WARNING Battery tool is always in
operating condition.
Therefore, remove the battery when the tool
is not in use or when carrying it at your side.
Fig. 2 Battery-release Button
Detach
Attach

-12-
ATTACHING THE BLADE (FIG. 3)
WARNING This tool is for cutting
wood only. Use only the
correct saw blades for wood-cutting
operations. Do not use any abrasive wheels.
WARNING Use only 7-1/4" saw blades
rated 6200/min (RPM) or
greater. NEVER use a blade that is so thick
that it prevents the outer blade washer from
engaging with the at side of the spindle.
Using a blade not designed for the saw may
result in serious personal injury and property
damage.
WARNING Be sure to wear protective
work gloves while
handling a saw blade. The blade can injure
unprotected hands.
a. Detach the battery pack.
b. Press the spindle lock and turn the blade
bolt with included blade wrench until the lock
engages. The spindle is now locked. Continue
to depress the spindle lock, turn the blade
wrench clockwise, and remove the blade
bolt and the outer washer. Always clean the
spindle, washers, upper guard, and lower
guard to remove any dirt and sawdust.
WARNING Depress the spindle lock
only when the tool is at a
standstill.
c. Make sure that the saw teeth and the arrow
on the blade point in the same direction as
the arrow on the lower guard.
d. Retract the lower guard all the way up into the
upper guard. While retracting the lower guard,
check the operation and condition of the lower
guard system.
e. Slide the blade through the slot in the foot
and mount it against the inner washer on the
shaft. Be sure that the clamping surfaces of
the inner and outer washers lay ush against
the blade.
WARNING Make sure that the
clamping surfaces of the
inner and outer washers are perfectly clean
and face the blade.
f. Reinstall the outer washer. First nger-tighten
the blade bolt, then tighten the blade bolt 1/8
turn (45°) with the blade wrench (this ensures
slippage of the saw blade when it encounters
excessive resistance, thus reducing motor
overload and saw kickback).
NOTICE: Do not use a blade wrench with
a longer handle, since it may lead to over
tightening of the blade bolt.
Loosen
Tighten
Blade bolt
Wrench
Blade
Spindle Lock
Spindle
Outer Washer
Large diameter faces blade
Inner Washer
Large diameter faces
blade
Lower Guard
Fig. 3

-13-
ADJUSTMENTS
WARNING Detach the battery pack
from the tool before
performing any assembly, adjustments, or
changing accessories. Such preventive safety
measures reduce the risk of starting the tool
accidentally.
DEPTH-OF–CUT ADJUSTMENT
(FIG. 4a & 4b)
Your tool is equipped with a depth-of-cut
adjustment lever, located beside the upper
guard.
To set the depth of cut:
a. Remove the battery pack from the circular
saw.
b. Loosen the depth-adjustment lever by pushing
it up (Fig. 4a).
c. Hold the foot of the saw at against the edge
of the workpiece and use the main handle
to raise or lower the saw. Align the bottom
contour of the depth-adjustment lever with the
desired depth-of-cut mark on the calibrated
depth bracket and tighten the lever (Fig. 4a).
NOTICE: Check the desired depth. Not more
than one tooth length of the blade should
extend below the material to be cut to minimize
splintering (Fig. 4b).
The four most common cutting depths are
marked on the calibrated depth bracket. These
settings help the operator to quickly set the saw
to cut through the material with thickness of
1/4", 1/2", 3/4" plywood,1x, 2x, and 3x lumber
respectively, while allowing one tooth length of
the blade to extend below the material.
Fig. 4b
Depth-adjustment Lever
One tooth length should penetrate
wood for minimum splintering
Fig. 4a Depth-of-
cut Mark
Bottom Contour of Depth-adjustment Lever

-14-
90° CUTTING ANGLE CHECK (FIG. 5)
a. Remove the battery pack from the circular
saw. Set the foot to the maximum depth of cut
setting.
b. Loosen the bevel-adjustment lever and set the
bevel indicator to 0° on quadrant. Retighten
the lever, and check for 90° angle between
the blade and bottom plane of foot with a
square.
c. Use a 3/32" allen wrench (not included) to
make adjustments, if necessary, by turning
the small alignment screw from the bottom
side of the foot.
BEVEL ADJUSTMENT (FIG. 6)
a. Remove the battery pack from the circular
saw.
b. Loosen the bevel-adjustment lever at the
front of the saw. Tilt the saw foot and align
the bevel indicator to the desired angle on
the calibrated quadrant, and then tighten the
bevel-adjustment lever.
Bevel-preset Knob
The bevel-preset knob allows the operator to
quickly set bevel at 22.5°,45°and 56°.
The bevel-preset knob of your saw was set to
56° at the factory.
a. Push the bevel-preset knob and turn it to one
of the desired setting (22.5°/ 45°/ 56°).
b. Release the bevel-preset knob and it will
serve as a travel stop when adjusting the
bevel angle.
WARNING Because of the increased
amount of blade
engagement in the work and decreased
stability of the foot, blade binding may
occur. Keep the saw steady and the foot
rmly on the workpiece.
Fig. 6
Bevel-
preset
Knob
Bevel-adjustment Lever
Quadrant
Fig.5 Quadrant
Bevel Adjustment
Lever
Foot
Blade
90°
Alignment Screw
Bevel
Indicator

-15-
LINE GUIDE (FIG. 7)
For a 0° cut, use the large notch in the foot for
guidance. For 45° bevel cuts, use the small
notch. The cutting guide notch will indicate an
approximate line of cut. Make sample cuts in
scrap lumber to verify the actual line of cut.
This will be helpful because of the number of
different blade types and thicknesses available.
To ensure minimum splintering on the good side
of the material to be cut, face the good side
down.
WRENCH USAGE
The wrench provided has several functions
(Fig. 8a):
1. 1/2" wrench is used to loosen/tighten the
blade bolt.
2. 9/16" wrench is used to loosen/tighten the
bevel/depth levers when levers are over-
tightened or additional tightening is needed.
3. Blade diamond arbor knock out (wedge
feature).
Storage is provided on the tool (Fig. 1). The
wrench is fully seated when the second lock
detent is engaged.
NOTICE: The wrench needs to be inserted
with the correct orientation (Fig. 8b). Damage
to the work piece could occur if inserted
incorrectly.
Fig. 8b
Correct
Incorrect
Fig. 7
0° Cuts
45° Cuts
Foot
Fig. 8a
1/2″Wrench
Slotted
Driver
9/16″Wrench
2
1
3
Wedge Feature

-16-
VACUUM HOSE PORT (FIG. 9)
Your tool is equipped with a vacuum hose port
for connection to vacuum / dust extractor hoses
with Ø1-1/4” (32mm).
Use a suitable vacuum extractor hose or use an
adapter, if necessary.
WARNING Never allow a vacuum /
dust extractor hose to
interfere with the lower guard or cutting
operation.
SAW HOOK (FIG. 10)
Your tool is equipped with a hook. Use the hook
to hang the saw from a rafter or beam, or other
similar secure structure for temporary storage
during work breaks. Recommended lumber size
to support the saw with the hook: 2x4.
To use, pivot the hook to the right side until it
snaps into the open position.
When not in use, always pivot the hook back
until it snaps into the closed position.
WARNING When the saw is hung by
the hook, do not shake the
saw or the object that it is hanging from. Do
not hang the saw from any electrical wires.
Make sure that the structure used to hang
the saw is secure. Personal injury or property
damage may occur.
Only use the hook for hanging the saw.
Using the hook to hang anything else could lead
to serious injury.
Do not use the hook to reach another object
or use the hook to support your weight in
any situation.
Fig. 9
Ø1-1/4″
(32mm)
Vacuum Hose Port
Fig. 10
Saw Hook in Open
Position

-17-
OPERATING INSTRUCTIONS
WARNING To reduce the risk of re,
personal injury, and
product damage due to a short circuit, never
immerse your tool, battery pack or charger
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 Do not attempt to modify
this tool or create
accessories not recommended for use with
this tool. Any such alteration or modication is
misuse and could result in a hazardous
condition leading to possible serious injury.
WARNING To prevent accidental
starting that could cause
serious personal injury, always remove the
battery pack from the tool when assembling
parts, making adjustments, or cleaning the
tool.
This circular saw must be used only with the battery packs and chargers listed below:
Battery Pack Charger
2.5Ah 3.5Ah 5Ah 6Ah 8Ah 10Ah 12Ah FLEX
FX0411
FX0421
FX0431
FX0451
FLEX
FX0111
FLEX
FX0321 FLEX FX0121 FLEX FX0331 FLEX FX0221 FLEX FX0341 FLEX FX0231
NOTE: For best performance, we recommend using FLEX battery pack that is 10Ah (FX0341) and
higher with this tool.
NOTICE: Please refer to the battery pack and charger manuals for detailed operating
information.
TRIGGER SWITCH AND LOCK-OFF BUTTON
(FIG. 11)
To turn the tool "ON", press and hold the lock-
off button with your thumb, then squeeze the
trigger switch with your nger. Release the lock-
off button and continue to squeeze the trigger
for continued operation.
To turn the tool "OFF", release the trigger
switch, which is spring loaded and will return to
the off position automatically.
Your saw should be running at full speed
BEFORE starting the cut, and turned off only
AFTER completing the cut. To increase switch
life, do not turn switch on and off while cutting.
Fig. 11
Trigger switch
Lock-off Button

-18-
LED LIGHT (FIG. 12)
Your tool is equipped with a LED light, located
behind the upper guard. This provides additional
light on the saw blade and the surface of the
workpiece for operation in lower light areas.The
LED light will automatically turn on with a slight
squeeze on the trigger switch before the tool
starts running. It will turn off approximately 10
seconds after the trigger switch is released.
NOTE: When the tool and/or battery pack
become overloaded or too hot, the internal
sensors will turn the tool off and the LED light
will rapidly ash. Rest the tool for a while or
place the tool and battery pack separately under
air ow for cooling.
The LED light will ash more slowly to indicate
that the battery pack is at low-battery capacity.
Recharge the battery pack.
INTENDED USE
This tool is designed to perform all wood-cutting
applications: general cuts, cross cuts, rip cuts,
and plunge cuts. Only use with wood materials.
NOTICE: The tool is not designed for metal
or masonry cutting. Dust and chips from those
materials will impact lower guard function.
WARNING Do not use abrasive
wheels with circular saws.
Abrasive dust may cause lower guard to not
operate properly.
GENERAL CUTS
WARNING Always be sure that
neither hand interferes
with the free movement of the lower guard.
WARNING After completing a cut and
releasing the trigger, be
aware of the necessary time it takes for the
blade to come to a complete stop during
coast down. Do not allow the saw to brush
against your leg or side; since the lower
guard is retractable, it could catch on your
clothing and expose the blade. Be aware of
the necessary blade exposures that exist in
both the upper and lower guard areas.
Always hold the saw by the main handle with
one hand and the auxiliary handle with the
other. Maintain a rm grip with both hands
on the saw and position your arms to resist
kickback forces. Position your body to either
side of the blade, but not in line with the blade.
To resume cutting after cutting is interrupted,
press the lock-off button, squeeze the trigger,
and allow the blade to reach full speed, then
re-enter the cut slowly, and resume cutting.
When cutting across the grain, the bers of
the wood have a tendency to tear and lift. You
can minimize this effect by advancing the saw
slowly. For a nished cut, a cross cut blade or
miter blade is recommended.
Fig. 12
LED Light

-19-
PLUNGE CUTS (FIG. 13)
a. Remove the battery pack from the circular
saw.
b. Set the depth adjustment according to the
thickness of the material to be cut.
c. Attach the battery pack.
d. Hold the main handle of the saw with one
hand, tilt the saw forward, and rest the front of
the foot plate on the material to be cut. Align
the cutting-guide notch with the line you’ve
drawn. Use the lower-guard lift lever to raise
the lower guard until you are able to grasp
and hold the auxiliary handle with the other
hand.
e. Position the saw so that the blade is just
clearing the material to be cut. Start the saw
and, once it is fully up to speed, use the front
edge of the foot as a hinge point to gradually
lower the back end of the saw.
f. Once the foot plate rests at on the surface
being cut, release the lower-guard lift lever.
Proceed cutting in the forward direction to the
end of cut.
WARNING Allow the blade to come to
a complete stop before
lifting the saw from the cut. Also, never pull
the saw backward, since the blade will climb
out of the material and KICKBACK will occur.
g. Turn the saw around and nish the cut in the
normal manner, sawing forward. If corners
of your plunge cut are not completely cut
through, use a jigsaw or hand saw to nish
the corners.
CUTTING LARGE SHEETS (FIG. 14)
Large sheets and long boards can sag or
bend, depending on support. If you attempt to
cut without leveling and properly supporting
the piece, the blade will tend to bind, causing
KICKBACK and extra load on the motor.
Support the panel or board close to the cut. Be
sure to set the depth of the cut so that you cut
through the sheet or board only and not the
table or work bench that is supporting it. The
two-by-fours used to raise and support the work
should be positioned so that the wide sides
support the work and rest on the table or bench.
Do not support the work with the narrow sides,
as this is an unsteady arrangement. If the sheet
or board to be cut is too large for a table or work
bench, use the supporting two-by-fours on the
oor and secured in place.
Fig. 14
Incorrect
Correct
Fig. 13
Lower-guard
Lift Lever
Foot
Line Guide

-20-
RIP CUTS (FIG. 15)
The combination blade provided with your saw
is for both cross cuts and rip cuts. Ripping is
cutting lengthwise with the grain of the wood.
Rip cuts are easy to do with a rip fence. Rip
fence FLEX FT211 is available as an accessory
(not included). To attach a fence, insert the
fence through the slots in the foot to the desired
width as shown, and secure it with the thumb
screw (included in the rip fence kit).
WARNING Ensure that the rip fence
does not interfere with the
free movement of the lower guard and saw
blade. A rip fence contacting the lower guard or
saw blade can cause property damage and
serious personal injury.
RIP BOARD GUIDE (FIG. 16)
When rip cutting large sheets, the rip fence may
not allow the desired width of cut. Clamp or nail
a straight piece of 1" (25 mm) lumber to the
sheet as a guide. Use the right side of the foot
against the board guide.
WARNING Ensure that the clamps do
not interfere with the free
movement of the saw.
Fig. 16
Rip Board
Guide
Desired Line of Cut
Fig. 15
Desired Width
of Cut
Rip Fence