Wesco WS3454U User manual

Mini circular saw EN
WS3454U
(PSC120MU1)
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Fig.A1 Fig.A2
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Fig.C2 Fig.D1
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Fig.G1 Fig.G2
Fig.G3 Fig.G4
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EN
PRODUCT SAFETY
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 and cement and
other masonry products;
• Arsenic and chromium from chemically-treated
lumber.
Your risk from these exposures varies, depending on
how often you do this type of work. To reduce your
exposure to these chemical: work in a well ventilated
area, and work with approved safety equipment, such as
those dust masks that are specially designed to filter out
microscopic particles.
WARNING: This product can expose you to
chemicals including lead and Di(2-ethylhexyl)
phthalate (DEHP) which are known to the State
of California to cause cancer and birth defects or
other reproductive harm. For more information go to
www.P65Warnings.ca.gov.
GENERAL POWER TOOL SAFETY WARNINGS
WARNING: 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.
Save all warnings and instructions for future reference.
The term “power tool” in the warnings refers to your mains-
operated (corded) power tool or battery-operated (cordless)
power tool.
1) WORK AREA SAFETY
a) Keep work area clean and well lit. Cluttered or dark
areas invite accidents.
b) Do not operate power tools in explosive
atmospheres, such as in the presence of flammable
liquids, gases or dust. Power tools create sparks
which may ignite the dust or fumes.
c) Keep children and bystanders away while operating
a power tool. Distractions can cause you to lose control.
2) ELECTRICAL SAFETY
a) Power tool plugs must match the outlet. Never
modify the plug in any way. Do not use any adapter
plugs with earthed (grounded) power tools.
Unmodified plugs and matching outlets will reduce risk
of electric shock.
b) Avoid body contact with earthed or grounded
surfaces, such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric
shock if your body is earthed or grounded.
c) Do not expose power tools to rain or wet
conditions. Water entering a power tool will increase
the risk of electric shock.
d) Do not abuse the cord. Never use the cord for
carrying, pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges or
moving parts. Damaged or entangled cords increase
the risk of electric shock.
e) When operating a power tool outdoors, use an
extension cord suitable for outdoor use. Use of a
cord suitable for outdoor use reduces the risk of electric
shock.
f) If operating a power tool in a damp location is
unavoidable, use a residual current device (RCD)
protected supply. Use of an RCD reduces the risk of
electric shock.
3) PERSONAL SAFETY
a) Stay alert, watch what you are doing and use
common sense when operating a power tool. Do
not use a power tool while you are tired or under
the influence of drugs, alcohol or medication. A
moment of inattention while operating power tools may
result in serious personal injury.
b) Use personal protective equipment. Always wear
eye protection. Protective equipment such as dust
mask, non-skid safety shoes, hard hat, or hearing
protection used for appropriate conditions will reduce
personal injuries.
c) Prevent unintentional starting. Ensure the switch
is in the off-position before connecting to power
source and/or battery pack, picking up or carrying
the tool. Carrying power tools with your finger on the
switch or energising power tools that have the switch on
invites accidents.
d) Remove any adjusting key or wrench before turning
the power tool on. A wrench or a key left attached
to a rotating part of the power tool may result in
personal injury.
e) Do not overreach. Keep proper footing and balance
at all times. This enables better control of the power
tool in unexpected situations.
f) Dress properly. Do not wear loose clothing or
jewellery. Keep your hair and clothing away from

6EN
moving parts. Loose clothes, jewellery or long hair can
be caught in moving parts.
g) If devices are provided for the connection of dust
extraction and collection facilities, ensure these
are connected and properly used. Use of dust
collection can reduce dust-related hazards.
h) 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
a) Do not force the power tool. Use the correct power
tool for your application. The correct power tool will
do the job better and safer at the rate for which it was
designed.
b) Do not use the power tool if the switch does not
turn it on and off. Any power tool that cannot be
controlled with the switch is dangerous and must be
repaired.
c) Disconnect the plug from the power source and/
or 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.
d) Store idle power tools out of the reach of children
and do not allow persons unfamiliar with the power
tool or these instructions to operate the power tool.
Power tools are dangerous in the hands of untrained
users.
e) Maintain power tools 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.
f) Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges are
less likely to bind and are easier to control.
g) Use the power tool, accessories and tool bits etc.
in accordance with these instructions, 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.
h) 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) SERVICE
a) Have your power tool serviced by a qualified repair
person using only identical replacement parts.
This will ensure that the safety of the power tool is
maintained.
SAFETY WARNINGS FOR ALL SAWS
CUTTING PROCEDURES
a) DANGER: Keep hands away from cutting area
and the blade. If both hands are holding the saw,
they cannot be cut by the blade.
b) Do not reach underneath the workpiece. The
guard cannot protect you from the blade below the
workpiece.
c) 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.
d) 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 minimise body exposure, blade binding, or
loss of control.
e) 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.
f) When ripping, always use a rip fence or straight
edge guide. This improves the accuracy of cut and
reduces the chance of blade binding.
g) Always use blades with correct size and shape
(diamond versus round) of arbour holes. Blades that
do not match the mounting hardware of the saw will
run off-centre, causing loss of control.
h) 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.
FURTHER SAFETY INSTRUCTIONS FOR ALL
SAWS
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;

7
EN
- 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.
a) Maintain a firm 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.
b) 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.
c) When restarting a saw in the workpiece, centre 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.
d) Support large panels to minimise 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.
e) Do not use dull or damaged blades. Unsharpened or
improperly set blades produce narrow kerf causing
excessive friction, blade binding and kickback.
f) 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.
g) Use extra caution when sawing into existing walls
or other blind areas. The protruding blade may cut
objects that can cause kickback.
SAFETY INSTRUCTIONS FOR CIRCULAR
SAW WITH INNER PENDULUM GUARD
LOWER GUARD FUNCTION
a) 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.
b) 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.
c) The lower guard may be retracted manually only for
special cuts such as “plunge cuts” and “compound
cuts.” Raise the lower guard by 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.
d) Always observe that the lower guard is covering
the blade before placing the saw down on bench
or floor. 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 RULES FOR YOUR
CIRCULAR SAW
1. Only use saw blades recommended in the
specification.
2. Do not use any abrasive wheels.
3. Use only blade diameter(s) in accordance with the
markings.
4. Identify the correct saw blade to be used for the
material to be cut.
5. Use only saw blades that are marked with a speed
equal or higher than the speed marked on the tool.

8EN
ADDITIONAL SAFETY WARNING FOR TILE
CUTTING
CUTTING-OFF MACHINE SAFETY
WARNINGS
a) The guard provided with the tool must be securely
attached to the power tool and positioned for
maximum safety, so the least amount of wheel is
exposed towards the operator. Position yourself
and bystanders away from the plane of the
rotating wheel. The guard helps to protect operator
from broken wheel fragments and accidental contact
with wheel.
b) Use only bonded reinforced or diamond cut-off
wheels for your power tool. Just because an
accessory can be attached to your power tool, it does
not assure safe operation.
c) 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.
d) Wheels must be used only for recommended
applications. For example: do not grind with the
side of cut-off wheel. Abrasive cut-off wheels are
intended for peripheral grinding, side forces applied to
these wheels may cause them to shatter.
e) Always use undamaged wheel flanges that are of
correct diameter for your selected wheel. Proper
wheel flanges support the wheel thus reducing the
possibility of wheel breakage.
f) Do not use worn down reinforced wheels from
larger power tools. Wheels intended for a larger
power tool are not suitable for the higher speed of a
smaller tool and may burst.
g) 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.
h) The arbour size of wheels and flanges must
properly fit the spindle of the power tool. Wheels
and flanges with arbour holes that do not match the
mounting hardware of the power tool will run out of
balance, vibrate excessively and may cause loss of
control.
i) Do not use damaged wheels. Before each use,
inspect the wheels for chips and cracks. If power
tool or wheel is dropped, inspect for damage or
install an undamaged wheel. After inspecting
and installing the wheel, position yourself and
bystanders away from the plane of the rotating
wheel and run the power tool at maximum no load
speed for one minute. Damaged wheels will normally
break apart during this test time.
j) Wear personal protective equipment. Depending
on application, use face shield, safety goggles
or safety glasses. As appropriate, wear dust
mask, hearing protectors, gloves and shop 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.
k) 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 wheel may fly away and
cause injury beyond immediate area of operation.
l) Hold the power tool by insulated gripping surfaces
only, when performing an operation where the
cutting accessory may contact hidden wiring or its
own cord. Cutting accessory contacting a “live”
wire may make exposed metal parts of the power
tool “live” and could give the operator an electric
shock.
m) Position the cord clear of the spinning accessory.
If you lose control, the cord may be cut or snagged
and your hand or arm may be pulled into the spinning
wheel.
n) Never lay the power tool down until the accessory
has come to a complete stop. The spinning wheel
may grab the surface and pull the power tool out of
your control.
o) 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.
p) 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.
q) Do not operate the power tool near flammable
materials. Sparks could ignite these materials.
r) Do not use accessories that require liquid
coolants. Using water or other liquid coolants may
result in electrocution or shock.

9
EN
FURTHER SAFETY INSTRUCTIONS FOR
ABRASIVE CUTTING-OFF OPERATIONS
KICKBACK AND RELATED WARNINGS
Kickback is a sudden reaction to a pinched or snagged
rotating wheel. Pinching or snagging causes rapid stalling
of the rotating wheel which in turn causes the uncontrolled
power tool to be forced in the direction opposite of the
wheel’s rotation at the point of the binding.
For example, if an abrasive wheel is snagged or pinched
by the workpiece, the edge of the wheel that is entering
into the pinch point can dig into the surface of the material
causing the wheel to climb out or kick out. The wheel may
either jump 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.
a) 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.
b) Never place your hand near the rotating accessory.
Accessory may kickback over your hand.
c) Do not position your body in line with the rotating
wheel. Kickback will propel the tool in direction
opposite to the wheel’s movement at the point of
snagging.
d) Use special care when working corners, sharp
edges etc. Avoid bouncing and snagging the
accessory. Corners, sharp edges or bouncing have a
tendency to snag the rotating accessory and cause loss
of control or kickback.
e) Do not attach a saw chain, woodcarving blade,
segmented diamond wheel with a peripheral gap
greater than 10 mm or toothed saw blade. Such
blades create frequent kickback and loss of control.
f) Do not “jam” the 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 binding of the
wheel in the cut and the possibility of kickback or wheel
breakage.
g) When wheel is binding or when interrupting a cut
for any reason, switch off the power tool and hold
the power tool motionless until the wheel comes
to a complete stop. Never attempt to remove the
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
binding.
h) Do not restart the cutting operation in the
workpiece. Let the wheel reach full speed and
carefully re-enter the cut. The wheel may bind,
walk up or kickback if the power tool is restarted in the
workpiece.
i) 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.
j) 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 RULES
1. Always wear a dust mask.

10 EN
SYMBOLS
To reduce the risk of injury, user must read
instruction manual
Warning
Wear ear protection
Wear eye protection
Wear dust mask
Incorrect
Correct
Lock
Unlock

11
EN
COMPONENT LIST
*Not all the accessories illustrated or described are included in standard delivery.
TECHNICAL DATA
Type WS3454U (34-designation of machinery, representative of circular saw)
Voltage 120V~60Hz
Rated current 6.0A
No load speed no: 4700/min n: 5200/min
Blade size 4-1/2”
Cutting capacity Cutting depth at 90° 1-11/16”
Cutting depth at 45° 1-1/8”
Protection class /II
Machine weight 6.09lbs
ACCESSORIES
Parallel guide 1
Hex key 1
Diamond blade 1
24T TCT blade 1
40T TCT blade 1
We recommend that you purchase your accessories listed in the above list from the same store that sold you the tool. Refer to
the accessory packaging for further details. Store personnel can assist you and offer advice.
1. Hex key
2. Soft grip handle
3. On/Off switch
4. Lock-off trigger
5. Fixed upper guard
6. Lower guard lever
7. Lower blade guard
8. Base plate
9. Parallel guide
10. Parallel guide clamping bolt
11. Bevel angle adjustment lock knob
12. Dust extraction outlet
13. Vacuum adapter*
14. Inner flange
15. Saw blade
16. Outer flange
17. Blade bolt
18. Spindle lock button
19. Depth adjustment knob
20. Depth scale
21. Bevel angle scale

12 EN
OPERATION INSTRUCTIONS
NOTE: Before using the tool, read the instruction book carefully.
INTENDED USE
The tool is intended for ripping and cross-cutting wood and
other materials in straight cutting lines, while resting firmly
on the work piece.
ASSEMBLY AND ADJUSTING
1. CHANGING THE SAW BLADE (SEE FIG. A1, A2)
WARNING:
• Unplug the saw before operation.
• Wear protective gloves when mounting the saw
blade. Danger of injury when touching the saw blade.
• Only use saw blades that correspond with
the characteristic data given in the operating
instructions.
• Do not use grinding discs as the cutting tool under
any circumstances.
• When mounting, ensure the cutting direction of
the teeth (direction of arrow on saw blade) and the
direction of rotation arrow above the blade guard
match.
For changing the cutting tool, it is best to place the machine
on the face side of the motor housing.
- Removing
1) Press the spindle lock button and keep it depressed. The
spindle lock button may be actuated only when the saw
blade is at a standstill.
2) Push the lower guard lever counterclockwise to the left
side, and the lower blade guard runs synchronously.
Hold the guard firmly with the lower guard lever.
3) Loosen the blade bolt in clockwise direction with the
hex key provided. Remove the blade bolt, outer flange
and the saw blade.
- Mounting
1) Clean the saw blade and all the clamping parts to be
assembled. Depress the spindle lock button and keep it
depressed.
2) Push the lower guard lever counterclockwise to the left
side, and the lower blade guard runs synchronously.
Hold the guard firmly with the lower guard lever.
3) Place the blade onto the inner flange and then insert
the outer flange over the spindle and tighten the blade
securing bolt (turning counter-clockwise) with 1/4 turn
more than finger tight using the hex key.
4) Check that the blade is securely fastened by continuing
to hold down the spindle lock button and attempting
to manually rotate the blade. If installed correctly, the
blade should not spin.
NOTE: For best cutting results, use a saw blade suited to the
material and cut quality desired.
2. SAWDUST REMOVAL (SEE FIG. B)
Your saw includes a dust extraction outlet that can be
attached with a vacuum adapter (not supplied) for dust
removal. This adapter port can be attached to a vacuum
cleaner (sold separately). The use of the vacuum is strongly
recommended as it keeps the work area clean, dramatically
increases cut visibility and reduces airborne dust. It also
keeps dust out of the working elements of the guard.
3. ADJUSTING THE CUTTING DEPTH (SEE FIG. C1, C2)
1) Determine the desired depth according to the
thickness of the material plus a blade allowance of
3mm.
2) Loose the depth adjustment knob by turning it
counter-clockwise. (SEE FIG. C1)
3) Manually lift the machine handle upwards away from
the base plate or downwards towards the base plate
to achieve a desired depth, by aligning the depth
indicator (a) with the depth scale. (SEE FIG. C1, C2)
4) Tighten the depth adjustment knob by turning it
clockwise. (SEE FIG. C2)
4. ADJUSTING THE BEVEL ANGLE (SEE FIG. D1, D2)
1) Loosen the bevel angle adjustment lock knob by
turnning it in couter-clockwise direction. (See Fig.
D1)
2) Tilt the base plate away from the machine until the
required cutting bevel angle is achieved by aligning
the triangle symbol (b) with the bevel angle scale.
(See Fig. D1, D2)
3) Tighten the bevel angle adjustment lock knob by
turning it in clockwise direction. (See Fig. D2)
5. PARALLEL GUIDE (SEE FIG. E1, E2)
The parallel guide enables exact cuts along a workpiece
edge and cutting strips of the same dimension.
1) Use the hex key to rotate the parallel guide clamping
bolt counter-clockwise to loosen.
2) Slide the parallel guide left or right to a desired
position.
3) Rotate the parallel guide clamping bolt clockwise to
tighten. Check if the parallel guide is locked in place.
OPERATION
1. SAFETY ON/OFF SWITCH (SEE FIG. F)
Your switch is locked off to prevent accidental starting.
To switch on, push the lock off trigger backwards and then
depress the on/off switch.

13
EN
To switch off the tool, just release the on/off switch.
2. POCKET AND PLUNGE CUTTING (SEE FIG. G1-G5)
WARNING: Always maintain proper control of the
saw to make sawing safer and easier. Loss of
control of the saw may cause serious injury.
NOTE:
• Make a trial cut in scrap material along your cut mark
to determine how much the blade thickness. If any, you
should offset the blade from the cut mark to allow for
the blade thickness to get an accurate cut.
• DO NOT REMOVE the saw and blade from the workpiece
while the blade is moving. It may damage the cut (kerf),
cause kickback and loss of control, and result in injury.
WORKING HINTS FOR YOUR CIRCULAR SAW
Always use a blade suited to the material and material
thickness to be cut. The quality of cut will improve as the
number of blade teeth increase. Always ensure the work-
piece is firmly held or clamped to prevent movement.
Support large panels close to the cut line. Any movement
of the material may affect the quality of the cut. The blade
cuts on the upward stroke and may chip the uppermost
surface or edges of your work piece when cutting, ensure
your uppermost surface is a non visible surface when your
work is finished.
MAINTAINACE
Remove the plug from the socket before carrying out
any adjustment, servicing or maintenance.
Your power tool requires no additional lubrication or
maintenance.
There are no user serviceable parts in your power tool.
Never use water or chemical cleaners to clean your power
tool. Wipe clean with a dry cloth. Always store your power
tool in a dry place. Keep the motor ventilation slots clean.
Keep all working controls free of dust. Occasionally you may
see sparks through the ventilation slots. This is normal and
will not damage your power tool.
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.