DeWalt DCS355D2-GB User manual

DCS355

B
Copyright DEWALT
Dansk (oversat fra original brugsvejledning) 5
Deutsch (übersetzt von den originalanweisungen) 19
English (original instructions) 35
Español (traducido de las instrucciones originales) 49
Français (traduction de la notice d’instructions originale) 65
Italiano (tradotto dalle istruzioni originali) 81
Nederlands (vertaald vanuit de originele instructies) 97
Norsk (oversatt fra de originale instruksjonene) 113
Português (traduzido das instruções originais) 127
Suomi (käännetty alkuperäisestä käyttöohjeesta) 143
Svenska (översatt från de ursprungliga instruktionerna) 157
Türkçe (orijinal talimatlardan çevrilmiştir) 171
Ελληνικά (μετάφραση από τις πρωτότυπες οδηγίες)186

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Figure 3

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Figure 13
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Figure 15 Figure 16

35
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Congratulations!
You have chosen a DEWALT tool. Years of
experience, thorough product development and
innovation make DEWALT one of the most reliable
partners for professional power tool users.
Technical Data
DCS355
Voltage VDC 18
Type 1
Battery Type Li-Ion
Power input W 300
Power output W 170
Oscillating frequency min-10 – 20 000
Oscillating angle 1.6˚
Weight kg 1.1
LPA (sound pressure) dB(A) 86
KPA (sound pressure uncertainty) dB(A) 3
LWA (sound power) dB(A) 97
KWA (sound power uncertainty) dB(A) 3
Vibration total values (triax vector sum) determined according to
EN 60745:
Vibration emission value a
h
a
h
= m/s² 16.1
Uncertainty K = m/s² 1.5
CORDLESS OSCILLATING MULTI-TOOL
DCS355
The vibration emission level given in this information
sheet has been measured in accordance with a
standardised test given in EN 60745 and may be
used to compare one tool with another. It may be
used for a preliminary assessment of exposure.
WARNING: The declared vibration
emission level represents the main
applications of the tool. However if the
tool is used for different applications,
with different accessories or poorly
maintained, the vibration emission may
differ. This may significantly increase the
exposure level over the total working
period.
An estimation of the level of exposure to
vibration should also take into account
the times when the tool is switched off
or when it is running but not actually
doing the job. This may significantly
reduce the exposure level over the total
working period.
Identify additional safety measures to
protect the operator from the effects of
vibration such as: maintain the tool and
the accessories, keep the hands warm,
organisation of work patterns.
Battery pack DCB180 DCB181 DCB182 DCB183
Battery type Li-Ion Li-Ion Li-Ion Li-Ion
Voltage VDC 18 18 18 18
Capacity A
h
3.0 1.5 4.0 2.0
Weight kg 0.64 0.35 0.61 0.40
Charger DCB105
Mains voltage VAC 230 V
Battery type Li-Ion
Approx. charging time min 30 40 55 70
(1.5 Ah (2.0 Ah (3.0 Ah (4.0 Ah
battery packs) battery packs) battery packs) battery packs)
Weight kg 0.49

36
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Horst Grossmann
Vice President Engineering and
Product Development
DEWALT, Richard-Klinger-Strasse 11,
D-65510, Idstein, Germany
03.07.2013
WARNING: To reduce the risk of injury,
read the instruction manual.
General Power Tool Safety Warnings
WARNING! Read all safety warnings
and all instructions. Failure to follow
the warnings and instructions may result
in electric shock, fire and/or serious
injury.
SAVE ALL WARNINGS AND INSTRUCTIONS
FOR FUTURE REFERENCE
The term “power tool” in the warnings refers to
your mains-operated (corded) power tool or
battery-operated (cordless) power tool.
1) WORK AREA SAFETY
a) Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
b) Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust. Power
tools create sparks which may ignite the dust
or fumes.
c) Keep children and bystanders away while
operating a power tool. Distractions can
cause you to lose control.
2) ELECTRICAL SAFETY
a) Power tool plugs must match the outlet.
Never modify the plug in any way. Do
not use any adapter plugs with earthed
(grounded) power tools. Unmodified plugs
and matching outlets will reduce risk of
electric shock.
b) Avoid body contact with earthed or
grounded surfaces such as pipes,
radiators, ranges and refrigerators. There
is an increased risk of electric shock if your
body is earthed or grounded.
c) Do not expose power tools to rain or wet
conditions. Water entering a power tool will
increase the risk of electric shock.
d) Do not abuse the cord. Never use the
cord for carrying, pulling or unplugging
the power tool. Keep cord away from
heat, oil, sharp edges or moving parts.
Damaged or entangled cords increase the
risk of electric shock.
Fuses
Europe 230 V tools 10 Amperes, mains
U.K. & Ireland 230 V tools 13 Amperes, in plugs
Definitions: Safety Guidelines
The definitions below describe the level of severity
for each signal word. Please read the manual and
pay attention to these symbols.
DANGER: Indicates an imminently
hazardous situation which, if not avoided,
will result in death or serious injury.
WARNING: Indicates a potentially
hazardous situation which, if not
avoided, could result in death or
serious injury.
CAUTION: Indicates a potentially
hazardous situation which, if not
avoided, may result in minor or
moderate injury.
NOTICE: Indicates a practice not
related to personal injury which, if
not avoided, may result in property
damage.
Denotes risk of electric shock.
Denotes risk of fire.
EC-Declaration of Conformity
MACHINERY DIRECTIVE
DCS355
DEWALT declares that these products described
under Technical Data are in compliance with:
2006/42/EC, EN 60745-1, EN60745-2-4,
EN60745-2-11.
These products also comply with Directive
2004/108/EC and 2011/65/EU. For more
information, please contact DEWALT at the following
address or refer to the back of the manual.
The undersigned is responsible for compilation of the
technical file and makes this declaration on behalf of
DEWALT.

37
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b) Do not use the power tool if the switch
does not turn it on and off. Any power
tool that cannot be controlled with the switch
is dangerous and must be repaired.
c) Disconnect the plug from the power
source and/or the battery pack from
the power tool before making any
adjustments, changing accessories, or
storing power tools. Such preventive safety
measures reduce the risk of starting the
power tool accidentally.
d) Store idle power tools out of the reach
of children and do not allow persons
unfamiliar with the power tool or these
instructions to operate the power tool.
Power tools are dangerous in the hands of
untrained users.
e) Maintain power tools. Check for
misalignment or binding of moving parts,
breakage of parts and any other condition
that may affect the power 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.
5) BATTERY TOOL USE AND CARE
a) Recharge only with the charger specified
by the manufacturer. A charger that is
suitable for one type of battery pack may
create a risk of fire when used with another
battery pack.
b) Use power tools only with specifically
designated battery packs. Use of any
other battery packs may create a risk of
injury and fire.
c) When battery pack is not in use, keep it
away from other metal objects like paper
clips, coins, keys, nails, screws or other
small metal objects that can make a
connection from one terminal to another.
Shorting the battery terminals together may
cause burns or a fire.
d) Under abusive conditions, liquid may be
ejected from the battery, avoid contact.
If contact accidentally occurs, flush with
water. If liquid contacts eyes, additionally
seek medical help. Liquid ejected from the
battery may cause irritation or burns.
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,
clothing and gloves away from 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.
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.

38
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Residual Risks
In spite of the application of the relevant safety
regulations and the implementation of safety
devices, certain residual risks cannot be avoided.
These are:
– Impairment of hearing.
– Risk of personal injury due to flying particles.
– Risk of burns due to accessories becoming hot
during operation.
– Risk of personal injury due to prolonged use.
Markings on Tool
The following pictograms are shown on the tool:
Read instruction manual before use.
Wear ear protection.
Wear eye protection.
Wear respiratory protection.
DATE CODE POSITION (FIG. 1)
The date code (t), which also includes the year of
manufacture, is printed into the housing.
Example: 2013 XX XX
Year of Manufacture
Important Safety Instructions for All
Battery Chargers
SAVE THESE INSTRUCTIONS: This manual
contains important safety and operating instructions
for the DCB105 battery charger.
• Before using the charger, read all instructions
and cautionary markings on charger, battery
pack and product using the battery pack.
WARNING: Shock hazard. Do not allow
any liquid to get inside charger. Electric
shock may result.
CAUTION: Burn hazard. To reduce
the risk of injury, charge only DEWALT
rechargeable battery packs. Other types
of batteries may overheat and burst
resulting in personal injury and property
damage.
6) SERVICE
a) Have your power tool serviced by a
qualified repair person using only identical
replacement parts. This will ensure that the
safety of the power tool is maintained.
Additional Safety Rules for
Oscillating Multi-Tool
WARNING: Take special care when
sanding some woods (e.g. beech, oak)
and metal which may produce toxic
dust. Wear a dust mask specifically
designed for protection against toxic
dust and fumes and ensure that
persons within or entering the work
area are also protected.
WARNING: Use this tool in a well-
ventilated area when sanding ferrous
metals. Do not operate the tool near
flammable liquids, gases or dust.
Sparks or hot particles from sanding
or arcing motor brushes may ignite
combustible materials.
Sanding Paint
WARNING: Observe the applicable
regulations for sanding paint. Pay
special attention to the following:
• Whenever possible, use a vacuum extractor
for dust collection.
• Take special care when sanding paint which
is possibly lead based:
– Do not let children or pregnant women
enter the work area.
– All persons entering the work area should
wear a mask specially designed for
protection against lead paint dust and
fumes.
– Do not eat, drink or smoke in the
work area.
• Dispose of dust particles and any other
removal debris safely.
• Hold power tool by insulated gripping
surfaces when performing an operation
where the cutting tool may contact hidden
wiring or its own cord. Contact with a "live"
wire will make exposed metal parts of the tool
"live" and shock the operator.
• Use clamps or another practical way to
secure and support the workpiece to a
stable platform. Holding the work by hand or
against your body leaves it unstable and may
lead to loss of control.

39
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• Do not disassemble the charger; take it to
an authorised service centre when service or
repair is required. Incorrect reassembly may
result in a risk of electric shock, electrocution or
fire.
• In case of damaged power supply cord the
supply cord must be replaced immediately by
the manufacturer, its service agent or similar
qualified person to prevent any hazard.
• Disconnect the charger from the outlet
before attempting any cleaning. This will
reduce the risk of electric shock. Removing
the battery pack will not reduce this risk.
• NEVER attempt to connect 2 chargers together.
• The charger is designed to operate on
standard 230 V household electrical power.
Do not attempt to use it on any other
voltage. This does not apply to the vehicular
charger.
SAVE THESE INSTRUCTIONS
Chargers
The DCB105 charger accepts 10.8 V, 14.4 V and
18 V Li-Ion (DCB123, DCB140, DCB141, DCB142,
DCB143, DCB180, DCB181, DCB182 and
DCB183) battery packs.
This charger requires no adjustment and is designed
to be as easy as possible to operate.
Charging Procedure (fig. 2)
1. Plug the charger into an appropriate 230 V
outlet before inserting the battery pack.
2. Insert the battery pack (h) into the charger,
making sure the pack is fully seated in the
charger. The red (charging) light will blink
continuously indicating that the charging
process has started.
3. The completion of charge will be indicated by
the red light remaining ON continuously. The
pack is fully charged and may be used at this
time or left in the charger.
NOTE: To ensure maximum performance and life of
Li-Ion batteries, charge the battery pack fully before
first use.
CAUTION: Children should be
supervised to ensure that they do not
play with the appliance.
NOTICE: Under certain conditions, with
the charger plugged in to the power
supply, the exposed charging contacts
inside the charger can be shorted by
foreign material. Foreign materials of
a conductive nature such as, but not
limited to, steel wool, aluminium foil or
any buildup of metallic particles should
be kept away from charger cavities.
Always unplug the charger from the
power supply when there is no battery
pack in the cavity. Unplug charger
before attempting to clean.
• DO NOT attempt to charge the battery pack
with any chargers other than the ones in
this manual. The charger and battery pack are
specifically designed to work together.
• These chargers are not intended for
any uses other than charging DEWALT
rechargeable batteries. Any other uses
may result in risk of fire, electric shock or
electrocution.
• Do not expose charger to rain or snow.
• Pull by plug rather than cord when
disconnecting charger. This will reduce risk
of damage to electric plug and cord.
• Make sure that cord is located so that it will
not be stepped on, tripped over or otherwise
subjected to damage or stress.
• Do not use an extension cord unless it
is absolutely necessary. Use of improper
extension cord could result in risk of fire,
electric shock or electrocution.
• When operating a charger outdoors, always
provide a dry location and use an extension
cord suitable for outdoor use. Use of a cord
suitable for outdoor use reduces the risk of
electric shock.
• Do not block the ventilation slots on the
charger. The ventilation slots are located
on the top and sides of the charger. Place
the charger in a position away from any heat
source.
• Do not operate charger with damaged cord
or plug — have them replaced immediately.
• Do not operate charger if it has received
a sharp blow, been dropped or otherwise
damaged in any way. Take it to an authorised
service centre.

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READ ALL INSTRUCTIONS
• Do not charge or use the battery pack
in explosive atmospheres, such as in the
presence of flammable liquids, gases or
dust. Inserting or removing the battery pack
from the charger may ignite the dust or fumes.
• Never force the battery pack into charger.
Do not modify the battery pack in any way
to fit into a non-compatible charger as
battery pack may rupture causing serious
personal injury.
• Charge the battery packs only in designated
DEWALT chargers.
• DO NOT splash or immerse in water or other
liquids.
• Do not store or use the tool and battery
pack in locations where the temperature
may reach or exceed 40˚C (105˚F) (such as
outside sheds or metal buildings in summer).
• For best results, make sure the battery pack is
fully charged before use.
WARNING: Never attempt to open
the battery pack for any reason. If
the battery pack case is cracked or
damaged, do not insert it into the
charger. Do not crush, drop or damage
battery pack. Do not use a batterypack
or charger that has received a sharp
blow, been dropped, run over or
damaged in any way (e.g., pierced with
a nail, hit with a hammer, stepped on).
Electric shock or electrocution mayresult.
Damaged battery packs should be
returned to the service centre for
recycling.
CAUTION: When not in use, place
tool on its side on a stable surface
where it will not cause a tripping or
falling hazard. Some tools with large
battery packs will stand upright on the
battery pack but may be easily knocked
over.
SPECIFIC SAFETY INSTRUCTIONS FOR LITHIUM ION
(Li-Ion)
• Do not incinerate the battery pack even if it
is severely damaged or is completely worn
out. The battery pack can explode in a fire.
Toxic fumes and materials are created when
lithium ion battery packs are burned.
Charging Process
Refer to the table below for the state of charge of
the battery pack.
State of charge
charging –– –– –– ––
fully charged –––––––––––––––––
hot/cold pack delay –– • –– • –– • –– •
xproblem pack or charger • • • • • • • • • • • •
problem powerline •• •• •• •• •• ••
This charger will not charge a faulty battery pack.
The charger will indicate faulty battery by refusing to
light or by displaying problem pack or charger blink
pattern.
NOTE: This could also mean a problem with a
charger.
If the charger indicates a problem, take the charger
and battery pack to be tested at an authorised
service centre.
Hot/Cold Pack Delay
When the charger detects a battery that is too hot
or too cold, it automatically starts a hot/cold pack
delay, suspending charging until the battery has
reached an appropriate temperature. The charger
then automatically switches to the pack charging
mode. This feature ensures maximum battery life.
XR Li-Ion tools are designed with an Electronic
Protection System that will protect the battery
against overloading, overheating or deep discharge.
The tool will automatically turn off if the Electronic
Protection System engages. If this occurs, place the
Li-Ion battery on the charger until it is fully charged.
A cold battery pack will charge at about half the rate
of a warm battery pack. The battery pack will charge
at that slower rate throughout the entire charging
cycle and will not return to maximum charge rate
even if the battery warms.
Important Safety Instructions for All
Battery Packs
When ordering replacement battery packs, be sure
to include the catalog number and voltage.
The battery pack is not fully charged out of the
carton. Before using the battery pack and charger,
read the safety instructions below and then follow
the charging procedures outlined.

41
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xProblem pack or charger.
Problem powerline.
Do not probe with conductive objects.
Do not charge damaged battery packs.
Use only with DEWALT battery packs.
Others may burst, causing personal injury
and damage.
Do not expose to water.
Have defective cords replaced
immediately.
Charge only between 4˚C and 40˚C.
Discard the battery pack with due care for
the environment.
Do not incinerate the battery pack.
Charges Li-Ion battery packs.
See Technical Data for charging time.
Only for indoor use.
Package Contents
The package contains:
1 Adaptor for all blades
1 31mm x 43mm Fastcut wood blade
1 Sanding-pad
1 31 mm x 43 mm Wood with nails blade
1 Rigid scraper blade
1 Blade adaptor hex key
1 Instruction manual
1 Exploded drawing
**DCS355D2/DCS355M2 ONLY:
1 Dust extraction adaptor**
1 Cutting guide**
1 100mm Semicircle blade**
• If battery contents come into contact with
the skin, immediately wash the area with
mild soap and water. If the battery liquid gets
into the eye, rinse water over the open eye for
15 minutes or until irritation ceases. If medical
attention is needed, the battery electrolyte
is composed of a mixture of liquid organic
carbonates and lithium salts.
• Contents of opened battery cells may cause
respiratory irritation. Provide fresh air. If
symptoms persists, seek medical attention.
WARNING: Burn hazard. Battery liquid
may be flammable if exposed to spark
or flame.
Battery Pack
BATTERY TYPE
The DCS355 operates on 18 volt XR Li-Ion battery
packs.
The DCB180, DCB181, DCB182 or DCB183 battery
packs may be used. Refer to Technical Data for
more information.
Storage Recommendations
1. The best storage place is one that is cool and
dry away from direct sunlight and excess heat
or cold. For optimum battery performance and
life, store battery packs at room temperature
when not in use.
2. For long storage, it is recommended to store a
fully charged battery pack in a cool, dry place
out of the charger for optimal results.
NOTE: Battery packs should not be stored
completely depleted of charge. The battery pack will
need to be recharged before use.
Labels on Charger and Battery Pack
In addition to the pictographs used in this manual,
the labels on the charger and the battery pack show
the following pictographs:
Read instruction manual before use.
Charging.
Fully charged.
Hot/cold pack delay.

42
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Electrical Safety
The electric motor has been designed for one
voltage only. Always check that the battery pack
voltage corresponds to the voltage on the rating
plate. Also make sure that the voltage of your
charger corresponds to that of your mains.
Your DEWALT charger is double insulated
in accordance with EN 60335; therefore
no earth wire is required.
If the supply cord is damaged, it must be replaced
by a specially prepared cord available through the
DEWALT service organisation.
Mains Plug Replacement
(U.K. & Ireland Only)
If a new mains plug needs to be fitted:
• Safely dispose of the old plug.
• Connect the brown lead to the live terminal in
the plug.
• Connect the blue lead to the neutral terminal.
WARNING: No connection is to be
made to the earth terminal.
Follow the fitting instructions supplied with good
quality plugs. Recommended fuse: 3 A.
Using an Extension Cable
An extension cord should not be used unless
absolutely necessary. Use an approved extension
cable suitable for the power input of your charger
(see Technical Data). The minimum conductor size
is 1 mm2; the maximum length is 30 m.
When using a cable reel, always unwind the cable
completely.
ASSEMBLY AND ADJUSTMENTS
WARNING: Prior to assembly and
adjustment, always remove the
battery pack. Always switch off the
tool before inserting or removing
the battery pack. Be sure the trigger
switch is in the OFF position. An
accidental start-up can cause injury.
WARNING: Risk of lacerations or
burns. Do not touch the sharp
edges of accessories at any time.
Do not touch workpiece or blade
immediately after operating the tool.
They can become very hot. Handle
carefully. Always allow accessories and
workpiece to cool before handling.
25 Assorted sandpaper pieces**
1 9.5mm x 43mm Wood detail blade**
1 3mm Carbide grout removal blade**
(100mm half moon)
1 Cutting guide hex key**
1 Charger**
2 Li-Ion battery packs**
1 TStak kitbox**
NOTE: Battery packs, chargers and kitboxes are not
included with N-models.
• Check for damage to the tool, parts or
accessories which may have occurred
during transport.
• Take the time to thoroughly read and
understand this manual prior to operation.
Description (fig. 1, 2)
WARNING: Never modify the power
tool or any part of it. Damage or
personal injury could result.
a. Variable speed trigger
b. LED Worklight
c. Accessory clamp lever
d. Lock on/off button
e. Accessory side mount slots
f. Cut guide block
g. Cut guide arm
h. Battery pack
i. Battery release button
j. Fuel gauge button
INTENDED USE
This oscillating multi-tool is designed for professional
detail sanding, plunge cutting, flush cutting, removal
of excess materials and surface preparation
applications.
DO NOT use under wet conditions or in the
presence of flammable liquids or gases.
This oscillating multi-tool is a professional power
tool.
DO NOT let children come into contact with the
tool. Supervision is required when inexperienced
operators use this tool.
• This product is not intended for use by persons
(including children) suffering from diminished
physical, sensory or mental abilities; lack of
experience, knowledge or skills unless they are
supervised by a person responsible for their
safety. Children should never be left alone with
this product.

43
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and is flush with the shaft. Ensure the accessory
is oriented as shown in figure 4.
4. Release the accessory clamp lever.
NOTE: Some accessories, such as scrapers and
blades can be mounted at an angle if required as
shown in figure 5.
INSTALLING/REMOVING SANDING SHEETS (FIG. 6)
A diamond shaped platen uses a hook and loop
adhesion system to attach the sanding sheets. The
platen allows you to use it on large flat surfaces and
tight spots or corners.
1. Attach the sanding platen (w) as described
under Installing/Removing Accessories.
2. Align the edges on the sanding sheet, with
the edge of the sanding platen and press the
sanding sheet (x) onto the platen.
3. Firmly press the base with the sanding sheet
attached against a flat surface and briefly switch
the tool on. This provides for good adhesion
between the platen and the sanding sheet and
also helps to prevent premature wear.
4. When the tip of the sanding sheet becomes
worn, detach the sheet from the platen, rotate
and reapply.
ATTACHING ACCESSORIES USING THE UNIVERSAL
ADAPTER (FIG. 7)
CAUTION: To avoid injury, do not
use any accessory for an application
where the adaptor may fail to hold the
accessory.
CAUTION: Read and follow all
manufacturers' safety warnings for any
accessories used with this tool.
CAUTION: To avoid injury, ensure
adaptor and accessory are securely
tightened.
Non-DEWALT accessories can be attached using
the universal adaptor.
1. Place the washer (k) on the tool.
2. Place accessory (l) on to washer.
3. Tighten and secure adaptor nut (p) using hex
wrench (r).
Attaching the Cut Guide (fig. 8–13)
The depth/cut guide allows you to precisely cut
material at a specified depth and more accurately
track a marked cut line.
WARNING: Use only DEWALT battery
packs and chargers.
Inserting and Removing the
Battery Pack from the Tool (fig. 2)
NOTE: For best results, make sure your battery
pack is fully charged.
TO INSTALL THE BATTERY PACK INTO THE TOOL HANDLE
1. Align the battery pack (h) with the rails inside the
tool’s handle (fig. 2).
2. Slide it into the handle until the battery pack is
firmly seated in the tool and ensure that it does
not disengage.
TO REMOVE THE BATTERY PACK FROM THE TOOL
1. Press the battery release button (i) and firmly
pull the battery pack out of the tool handle.
2. Insert battery pack into the charger as
described in the charger section of this manual.
FUEL GAUGE BATTERY PACKS (FIG. 2)
Some DEWALT battery packs include a fuel gauge
which consists of three green LED lights that
indicate the level of charge remaining in the battery
pack.
To actuate the fuel gauge, press and hold the fuel
gauge button (j). A combination of the three green
LED lights will illuminate designating the level of
charge left. When the level of charge in the battery
is below the usable limit, the fuel gauge will not
illuminate and the battery will need to be recharged.
NOTE: The fuel gauge is only an indication of the
charge left on the battery pack. It does not indicate
tool functionality and is subject to variation based
on product components, temperature and end-user
application.
Installing/Removing Accessories
(fig.3–7)
TOOL-FREE ACCESSORY CLAMP (FIG. 3–5)
The DCS355 features a quick change accessory
system. This allows for faster accessory changes
without the need for wrenches or hex keys like other
oscillating tool systems.
1. Grasp the tool and squeeze the accessory
clamping lever (c) as shown in figure 3.
2. Clean any residual debris from the tool shaft
and the accessory holder.
3. Slide the accessory between the shaft (v)
and the accessory holder making sure the
accessory engages all eight pins on the holder

44
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2. Insert screw (o) and washer (u) into the dust
extraction adaptor (q) and tighten with the
supplied hex key (p).
OPERATION
Instructions for Use (fig. 14, 15)
WARNING: Always observe the safety
instructions and applicable regulations.
WARNING: To reduce the risk of
serious personal injury, turn tool
off and disconnect battery pack
before making any adjustments or
removing/installing attachments or
accessories. An accidental start-up
can cause injury.
WARNING: Ensure switch is fully OFF
before installing the battery.
1. Install the battery pack.
2. To turn the tool ON, hold it as shown in
figure14 and press the variable speed
trigger(a).
NOTE: The further the trigger switch is
depressed the faster the tool will operate.
If in doubt about the proper speed for your
operation, test the performance at low speed
and gradually increase until a comfortable speed
is found.
3. To turn the tool OFF, release the variable speed
trigger (a).
Lock on/off Button (fig. 15)
The tool can be locked off by fully depressing the
lock on/off button (d) shown in figure 15.
For more comfort in extended use applications, the
lock on/off button (d) can lock the trigger trigger (a)
in the depressed position.
LED Worklight (fig. 16)
The LED worklight (b) will activate when the trigger
is depressed. It will automatically shut off following a
short period of time once the trigger is released.
Proper Hand Position (fig. 14)
WARNING: To reduce the risk of
serious personal injury, ALWAYS use
proper hand position as shown.
WARNING: To reduce the risk of
serious personal injury, ALWAYS hold
securely in anticipation of a sudden
reaction.
1. Attach the cut guide block (f) by inserting
the accessory tabs (m) on the guide into the
accessory side mount slots (e) on the main
body of the tool.
NOTE: The depth/cut guide can be attached to
either side of the tool.
2. Secure the block to the main body with the
supplied screw (o) and washer (u). Tighten with
the supplied hex wrench (p).
DEPTH GUIDE
This feature allows you to precisely cut material at a
specified depth.
1. Insert the guide arm (g) as shown in figure 9 into
the front slot on the guide block (f).
2. Adjust the length of the guide by pulling out or
pushing inward to achieve the desired cut depth
as shown in figure 10.
3. Secure the guide in place by turning the depth/
cut adjustment knob (n) clockwise. To release
the guide turn the depth/cut adjustment knob
counterclockwise.
CUT GUIDE
This feature allows you to more accurately track a
marked cut line.
1. Insert the guide arm (g) as shown in figure 11
into the slots on the left and right sides of the
guide block (f).
2. Adjust the length of the guide by pulling out or
pushing inward to achieve the desired length as
shown in figure 12.
3. Secure the guide in place by turning the depth/
cut adjustment knob (n) clockwise. To release
the guide turn the depth/cut adjustment knob
counterclockwise.
NOTE: The guide arm can also be placed in the
guard assembly vertically in order to set the height
off a cut. Refer to figure 13.
Attaching the Dust Extraction
Adaptor (fig. 17)
The Dust Extraction Adaptor allows you to connect
the tool to an external dust extractor, either using
the AirLock™ system (DWV9000-XJ), or a standard
35mm dust extractor fitment.
1. Attach the dust extraction adaptor (q) by
inserting the tabs (m) in to the accessory side
mount slots (e).
NOTE: The dust extraction adaptor can be
attached to either side of the tool.

45
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MAINTENANCE
Your DEWALT power tool has been designed to
operate over a long period of time with a minimum
of maintenance. Continuous satisfactory operation
depends upon proper tool care and regular cleaning.
WARNING: To reduce the risk of
serious personal injury, turn tool
off and disconnect battery pack
before making any adjustments or
removing/installing attachments or
accessories. Be sure the trigger switch
is in the OFF position. An accidental
start-up can cause injury.
The charger and battery pack are not serviceable.
There are no serviceable parts inside.
Lubrication
Your power tool requires no additional lubrication.
Cleaning
WARNING: Blow dirt and dust out of
the main housing with dry air as often as
dirt is seen collecting in and around the
air vents. Wear approved eye protection
and approved dust mask when
performing this procedure.
WARNING: Never use solvents or
other harsh chemicals for cleaning the
non-metallic parts of the tool. These
chemicals may weaken the materials
used in these parts. Use a cloth
dampened only with water and mild
soap. Never let any liquid get inside the
tool; never immerse any part of the tool
into a liquid.
CHARGER CLEANING INSTRUCTIONS
WARNING: Shock hazard. Disconnect
the charger from the AC outlet before
cleaning. Dirt and grease may be
removed from the exterior of the charger
using a cloth or soft non-metallic brush.
Do not use water or any cleaning
solutions.
Proper hand position requires the tool to be held as
shown in figure 14.
Using the Dust Extraction Adaptor
with the Sanding Platen (fig. 18)
1. Attach the dust extraction adaptor (q). Refer to
Attaching the Dust Extraction Adaptor.
2. Attach the sanding platen (w) as described
under Installing/Removing Accessories.
3. Attach sanding sheet as described under
Installing/Removing Sanding Sheets.
Using the Dust Extraction Adaptor
with Plunge Cutting Accessory
(fig.19)
1. Attach the dust extraction adaptor. Refer to
Attaching the Dust Extraction Adaptor.
2. Push dust extraction arm (s) into the lower
aperture of the dust extraction adaptor (q).
3. Attach plunge cutting blade as described under
Installing/Removing Accessories.
4. Adjust the dust extraction arm (s) for best
results.
Helpful Hints
• Always ensure the workpiece is firmly held or
clamped to prevent movement. Any movement
of the material may affect the quality of the
cutting or sanding finish.
• Do not start sanding without having the
sandpaper attached to sanding platen.
• Use coarse grit paper to sand rough surfaces,
medium grit for smooth surfaces and fine grit for
the finishing surfaces. If necessary, first make a
test run on scrap material.
• Excessive force will reduce the working
efficiency and cause motor overload. Replacing
the accessory regularly will maintain optimum
working efficiency.
• Do not allow the sandpaper to wear away, it will
damage the sanding pad.
• If the tool overheats, especially when used at
low speed, set the speed to maximum and
run it with no load for 2–3 minutes to cool
the motor. Avoid prolonged usage at very low
speeds. Always keep the blade sharp.

46
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Local regulations may provide for separate collection
of electrical products from the household, at
municipal waste sites or by the retailer when you
purchase a new product.
DEWALT provides a facility for the collection and
recycling of DEWALT products once they have
reached the end of their working life. To take
advantage of this service please return your product
to any authorised repair agent who will collect them
on our behalf.
You can check the location of your nearest
authorised repair agent by contacting your local
DEWALT office at the address indicated in this
manual. Alternatively, a list of authorised DEWALT
repair agents and full details of our after-sales
service and contacts are available on the Internet at:
www.2helpU.com.
Rechargeable Battery Pack
This long life battery pack must be recharged when
it fails to produce sufficient power on jobs which
were easily done before. At the end of its technical
life, discard it with due care for our environment:
• Run the battery pack down completely, then
remove it from the tool.
• Li-Ion cells are recyclable. Take them to your
dealer or a local recycling station. The collected
battery packs will be recycled or disposed of
properly.
Optional Accessories
WARNING: Since accessories, other
than those offered by DEWALT, have
not been tested with this product, use
of such accessories with this tool could
be hazardous. To reduce the risk of
injury, only DEWALT, recommended
accessories should be used with this
product.
Consult your dealer for further information on the
appropriate accessories.
COMPATIBLE ACCESSORIES
Oscillating sanding pad
Oscillating wood w/ nails blade
Wide titanium oscillating wood w/ nails blade
Oscillating hardwood blade
Oscillating fastcut wood blade
Wide oscillating fastcut wood blade
Oscillating wood detail blade
Oscillating titanium metal blade
Oscillating semicircle blade
Oscillating titanium semicircle blade
Oscillating flush cut blade
Titanium oscillating flush cut blade
Oscillating multi-material blade
Oscillating rigid scraper blade
Oscillating flexible scraper blade
Oscillating carbide grout removal blade
Oscillating fastcut carbide grout removal blade
Oscillating carbide rasp
Protecting the Environment
Separate collection. This product must
not be disposed of with normal
household waste.
Should you find one day that your DEWALT product
needs replacement, or if it is of no further use to you,
do not dispose of it with household waste. Make this
product available for separate collection.
Separate collection of used products and
packaging allows materials to be
recycled and used again. Re-use of
recycled materials helps prevent
environmental pollution and reduces
the demand for raw materials.

47
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GUARANTEE
DEWALT is confident of the quality of its
products and offers an outstanding guarantee
for professional users of the product. This
guarantee statement is in addition to and in
no way prejudices your contractual rights as a
professional user or your statutory rights as a
private non-professional user. The guarantee
is valid within the territories of the Member
States of the European Union and the
European Free Trade Area.
•30 DAY NO RISK SATISFACTION GUARANTEE •
If you are not completely satisfied with the
performance of your DEWALT tool, simply
return it within 30 days, complete with all
original components, as purchased, to
the point of purchase, for a full refund or
exchange. The product must have been
subject to fair wear and tear and proof of
purchase must be produced.
•ONE YEAR FREE SERVICE CONTRACT •
If you need maintenance or service for your
DEWALT tool, in the 12 months following
purchase, you are entitled to one service free
of charge. It will be undertaken free of charge
at an authorised DEWALT repair agent. Proof
of purchase must be produced. Includes
labour. Excludes accessories and spare parts
unless failed under warranty.
• ONE YEAR FULL WARRANTY •
If your DEWALT product becomes defective
due to faulty materials or workmanship
within 12 months from the date of purchase,
DEWALT guarantees to replace all defective
parts free of charge or – at our discretion –
replace the unit free of charge provided that:
• The product has not been misused;
• The product has been subject to fair
wear and tear;
• Repairs have not been attempted by
unauthorised persons;
• Proof of purchase is produced;
• The product is returned complete with all
original components.
If you wish to make a claim, contact your
seller or check the location of your nearest
authorised DEWALT repair agent in the
DEWALT catalogue or contact your DEWALT
office at the address indicated in this manual.
A list of authorised DEWALT repair agents and
full details of our after-sales service is available
on the Internet at: www.2helpU.com.

48
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TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE POSSIBLE SOLUTION
Unit will not
start. Battery not installed
correctly.
Install battery in tool handle and ensure it is seated correctly.
Battery is not
charged. Place battery on charger and install a fully charged battery pack in tool.
Battery or
power tool is
overheated.
Allow battery and/or tool to cool after extended use or replace
overheated battery pack with a cool one.
Switch is
damaged. Have switch replaced by an authorised DEWALT repair agent.