Hilti SC 70W-A User manual

*2092403*
2092403
SC 70W-A
Operating instructions en
Manual de instrucciones es
Manual de instruções pt
Brugsanvisning da
Bruksanvisning sv
Bruksanvisning no
Käyttöohje 
Használati utasítás hu
Návod k obsluze cs
Návod na obsluhu sk
KulllanmaTalimatı tr
ar
Lietošanaspamācība lv
Instrukcija lt
Kasutusjuhend et
Пайдаланубойыншабасшылықkk
ja
ko
zh
cn
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ORIGINAL OPERATING INSTRUCTIONS
SC 70W‑A22 cordless circular saw
It is essential that the operating instructions
are read before the power tool is operated for
the first time.
Always keep these operating instructions to-
gether with the power tool.
Ensure that the operating instructions are
with the power tool when it is given to other
persons.
Contents Page
1 General information 1
2 Safety instructions 2
3Description 5
4 Accessories, consumables 6
5 Technical data 6
6Beforeuse 7
7 Operation 8
8 Care and maintenance 9
9 Troubleshooting 10
10 Disposal 11
11 Manufacturer’s warranty - tools 11
12 EC declaration of conformity (original) 12
1These numbers refer to the illustrations. You can
find the illustrations at the beginning of the operating
instructions.
In these operating instructions, the designation “the
power tool” always refers to the SC 70W-A22 cordless
circular saw.
Operating controls and indicators 1
@Single-arm parallel guide (rip fence)
;Cutting angle presets (22.5°, 45°, 50°)
=Drive spindle lockbutton
%Auxiliary grip
&On / off switch
(Switch-on interlock
)Grip
+Charge status and fault display (Li-ion battery)
§Release buttons with additional function (charge
status display activation)
/Battery
:Clamping lever for cutting depth adjustment
·Hexagon socket wrench
$Small base plate
£LED illumination
|Front clamping lever for the parallel guide
¡Clamping lever for cutting angle adjustment
QCutting depth scale
WHose connector (chip deflector)
EGuard
RPivoting guard operating lever
TRear clamping lever for the parallel guide (only with
largebaseplate)
ZPivoting guard
UDrive spindle
IDirection-of-rotation arrow
OTwin-arm parallel guide (rip fence)
P0°cutting line indicator
Ü45°cutting line indicator
[Cutting angle scale
]Large base plate
ÆClamping screw
ºClamping flange
•Mounting flange
A0°indicator on the base plate
S1°- 50° indicator on the base plate
Guide rail adapter 2
DRear retaining lug
FFront retaining lug
G0° indicator
H1°- 50° indicator
1 General information
1.1 Safety notices and their meaning
DANGER
Draws attention to imminent danger that will lead to
seriousbodilyinjuryorfatality.
WARNING
Draws attention to a potentially dangerous situation that
could lead to serious personal injury or fatality.
CAUTION
Draws attention to a potentially dangerous situation that
could lead to slight personal injury or damage to the
equipment or other property.
NOTE
Draws attention to an instruction or other useful informa-
tion.
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1.2 Explanation of the pictograms and other
information
Warning signs
General
warning Warning: caustic
substances
Obligation signs
Read the
operating
instructions
before use.
Symbols
Rated speed
under no
load
Saw blade
Location of identification data on the power tool
The type designation and serial number can be found
on the type identification plate on the machine or tool.
Makeanoteofthisdatainyouroperatinginstructions
and always refer to it when making an enquiry to your
Hilti representative or service department.
Type:
Generation: 01
Serial no.:
2 Safety instructions
NOTE
The safety rules in section 2.1 contain all general safety
rules for power tools which, in accordance with the
applicable standards, must be listed in the operating
instructions. Accordingly, some of the rules listed may
not be relevant to this tool.
2.1 General power tool safety warnings
a) WARNING
Read all safety warnings and all instructions. Fail-
ure 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.
2.1.1Workareasafety
a) Keep work area clean and well lit. Cluttered or dark
areas invite accidents.
b) Do not operate power tools in explosive atmo-
spheres, 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 operat-
ing a power tool. Distractions can cause you to lose
control.
2.1.2 Electrical safety
a) Power tool plugs must match the outlet. Never
modify the plug in any way. Do not use any ad-
apter 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 condi-
tions. 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.
2.1.3 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
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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 turn-
ing the power tool on. Awrenchorakeyleftat-
tached to a rotating part of the power tool may result
in personal injury.
e) Do not overreach. Keep proper footing and bal-
ance 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.
2.1.4 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 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 chil-
dren 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 main-
tained 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 opera-
tions different from those intended could result in a
hazardous situation.
2.1.5 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 acci-
dentally occurs, flush with water. If liquid contacts
eyes, additionally seek medical help. Liquid ejec-
ted from the battery may cause irritation or burns.
2.1.6 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.
2.2 Safety instructions for all saws
2.2.1 Cutting procedures
a) DANGER
Keep hands away fromcutting 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.
b) Do not reach underneath the workpiece. The guard
cannot protect you from the blade below the work-
piece.
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 piece being cut in your hands or across
your leg. Secure the workpiece to a stable plat-
form. It is important to support the work properly to
minimize body exposure, blade binding, or loss of
control.
e) Hold the power tool by insulated gripping surfaces
only, when performing an operation where the
cutting tool may contact hidden wiring. Contact
with a “live” wire will also make exposed metal parts
of the power tool “live” and could give the operator
an electric shock.
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 eccentrically, causing loss of control.
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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.
2.2.2 Further safety instructions for all saws
Kickback causes and related warnings
kickback is a sudden reaction to a pinched, bound 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 bound 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
notinlinewiththeblade.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 re-
move the saw from the work or pull the saw back-
ward 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 and check that saw
teeth are not engaged into the material. If saw
blade is binding, 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 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.
2.2.3 Safety instructions for circular saws with
pendulum guard
Lower guard function
a) Check lower guard for proper closing before each
use. Do not operate the saw if lower guard does
not move freely and close instantly. Never clamp
or tie the lower guard into the open position. If saw
is accidentally dropped, lower guard may be bent.
Raisethelowerguardwiththeretractinghandleand
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) Lower guard may be retracted manually only for
special cuts such as “plunge cuts” and “com-
pound cuts.” Raise lower guard by retracting
handle and as soon as blade enters the mater-
ial, the lower guard must be released. For all other
sawing, the lower guard should operate automatic-
ally.
d) Always observe that the lower guard is covering
the blade before placing 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.
2.3 Additional safety instructions
2.3.1 Personal safety
a) Modification of the machine or tampering with its
parts is not permissible.
b) Wear ear protectors. Exposure to noise can cause
hearing loss.
c) Breathing protection must be worn if the power
tool is used without a dust removal system for
work that creates dust.
d) Do not operate the power tool without the pro-
tective devices that belong to it.
e) Improve the blood circulation in your fingers by
relaxing your hands and exercising your fingers
during breaks between working.
f) Switch the power tool on only after bringing it into
position at the workpiece.
g) Remove the battery before storing or transporting
the tool.
h) Always guide the power tool away from your body
when working with it.
i) Do not work with the power tool overhead.
j) Do not attempt to brake the speed of the saw
blade by pressing it laterally against the work-
piece or some other object.
k) Do not touch the clamping flange, the clamping
screw or the saw blade while the power tool is
running.
l) The kerf must be free of obstructions. Do not saw
into screws and nails etc.
m) Never press the drive spindle lockbutton while the
saw blade is rotating.
n) Never direct the power tool toward persons.
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o) The appliance is not intended for use by debilit-
ated persons who have received no special train-
ing. Keep the appliance out of reach of children.
p) Adjust the pressure applied to the saw blade and
the material being cut so that the blade does not
stall, possibly causing the power tool to kick back.
q) Avoid overheating the tips of the saw blade teeth.
r) When cutting plastics, melting of the plastic
should be avoided.
s) Working on the material may cause it to splinter.
Wear eye protection and protective gloves. Wear
breathing protection if no dust removal system is
used. Splintering material presents a risk of injury to
the eyes and body.
t) Before beginning the work, check the hazard clas-
sification of the dust that will be produced. Use
an industrial vacuum cleaner with an officially
approved protection classification in compliance
with locally applicable dust protection regula-
tions.
u) Dust from materials, such as paint containing lead,
some wood species, concrete / masonry / stone con-
taining silica, and minerals as well as metal, may be
harmful. Contact with or inhalation of the dust may
cause allergic reactions and/or respiratory or other
diseases to the operator or bystanders. Certain kinds
of dust are classified as carcinogenic such as oak and
beech dust, especially in conjunction with additives
for wood conditioning (chromate, wood preservative).
Material containing asbestos must only be treated by
specialists. Wheretheuseofadust-extraction
device is possible it shall be used. To achieve a
high level of dust collection, use a suitable dust
extractor. When indicated wear a respirator ap-
propriate for the type of dust generated. Ensure
that the workplace is well ventilated. Follow na-
tional requirements for the materials you want to
work with.
v) The cutting depth set should always be approx.
5 to 10 mm greater than the thickness of the
material to be cut.
2.3.2 Electrical safety
Before beginning work, check the working area (e.g.
using a metal detector) to ensure that no concealed
electric cables or gas and water pipes are present.
External metal parts of the power tool may become
live, for example, when an electric cable is damaged
accidentally. This presents a serious risk of electric shock.
2.3.3 Careful handling and use of batteries
a) Observe the special guidelines applicable to the
transport, storage and use of Li-ion batteries.
b) Do not expose batteries to high temperatures and
keep them away from fire. This presents a risk of
explosion.
c) Do not disassemble, squash or incinerate batter-
ies and do not subject them to temperatures over
80°C. This presents a risk of fire, explosion or injury
through contact with caustic substances.
d) Do not charge or continue to use damaged bat-
teries (e.g. batteries with cracks, broken parts,
bent or pushed-in and/or pulled-out contacts).
e) If the battery gets hot while not in use, the battery or
the power tool/battery system may be defective. Put
the power tool/battery system in a suitable place
where it is an adequate distance from flammable
materials. Keep the system under observation
while it is cooling down and contact Hilti Service.
3 Description
3.1 Use of the product as directed
The power tool is a hand-held, cordless circular saw.
The power tool is designed for cutting flat-surfaced wood or wood-like materials, plastics, gypsum plasterboard,
gypsum fiberboard and composites up to a cutting depth of 70 mm and for making bevel cuts at angles between 0°
and 50°.
The power tool is designed for professional use and may be operated, serviced and maintained only by trained,
authorized personnel. This personnel must be informed of any special hazards that may be encountered. The power
tool and its ancillary equipment may present hazards when used incorrectlybyuntrainedpersonnelorwhenusednot
as directed.
Observe the national health and safety requirements.
Use of saw blades not in compliance with the given specification (e.g. diameter, speed of rotation, thickness) or use of
cutting and grinding discs or blades made from high-alloy steel (HSS steel) is not permissible due to risk of breakage.
Sawing metals is not permissible.
Do not use the battery as a power source for other unspecified appliances.
To avoid the risk of injury, use only genuine Hilti accessories and insert tools.
3.2 Standard equipment includes:
1 Power tool
1Sawblade
1 Operating instructions
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1 Hexagon socket wrench
1 Rip fence (parallel guide)
1 Guide rail adapter (optional)
3.3 Additional items required for operating the tool:
A suitable battery of the specified type (see table in the Technical Data section) and a suitable battery charger from
the C 4⁄36 series. For further information about battery charging, please read the operating instructions for the battery
charger.
3.4 Lithium‑ion battery charge status
The Li-ion battery features a charge status display. The charge status is indicated by the LEDs on the battery during
charging (please refer to the operating instructions for the charger). When the battery is not in use, pressing one of the
battery release buttons or inserting the battery into the power tool causes the battery charge status to be displayed
by the four LEDs for three seconds.
LEDs light constantly LEDs blink Charge status C
LED1,2,3,4 -C≧75%
LED1,2,3 -50 % ≦ C < 75 %
LED 1, 2 -25 % ≦ C < 50 %
LED 1 -10 % ≦ C < 25 %
-LED 1 C<10%
NOTE
Indication of the charge status is not possible while the power tool is in operation or immediately after operation. If the
battery charge status LEDs flash, please refer to the information given in section 9. “Troubleshooting”.
4 Accessories, consumables
NOTE
Accessories can be found at your Hilti Center or online at www.hilti.com.
Spare parts
Designation
Mounting flange
Clamping flange
Clamping screw
5 Technical data
Right of technical changes reserved.
Power tool SC 70W‑A22
Rated voltage (DC voltage) 21.6 V
Weight in accordance with EPTA procedure 01/2003,
withlargebaseplate 4.7 kg
Weight in accordance with EPTA procedure 01/2003,
with small base plate 4.5 kg
Specified blade diameter 190 mm
Saw blade disc thickness 0.7…1.5 mm
Saw blade arbor size 30 mm
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Power tool SC 70W‑A22
Cutting depth with scale setting Bracket 0°: 70 mm
Bracket 45°: 51 mm
Bracket 50°: 45 mm
Speed under no load 3,500/min
NOTE
The sound pressure and vibration values given in these instructions have been measured in accordance with a
standardized test and may be used to compare one electric tool with another. They may be used for a preliminary
assessment of exposure. The data given represents the main applications of the electric tool. However, if the electric
tool is used for different applications, with different accessories or is poorly maintained, the data may vary. This may
significantly increase exposure over the total working period. An accurate estimation of exposure should also take into
account the times when the tool is switched off, or when it is running but not actually being used for a job. This may
significantly reduce exposure over the total working period. Identify additional safety measures to protect the operator
from the effects of noise and/or vibration, for example: maintain the electric tool and accessories, keep the hands
warm, organisation of work patterns.
Noise and vibration information for the SC 70W-A22 (measured in accordance with EN 60745-2-5):
Typical A-weighted sound power level, LWA 92 dB (A)
Typical A-weighted emission sound pressure level., LpA 81 dB (A)
Uncertainty for the given sound level, K 3 dB (A)
Triaxial vibration values (vibration vector sum)
Sawing in wood, ahW 1.3 m/s²
Uncertainty (K) 1.5 m/s²
Battery B 22/5.2 Li‑Ion (01) B 22/3.3 Li‑Ion B 22/2.6 Li‑Ion (02)
Rated voltage 21.6 V 21.6 V 21.6 V
Capacity 5.2 Ah 3.3 Ah 2.6 Ah
Weight 0.78 kg 0.78 kg 0.48 kg
6Beforeuse
NOTE
The system switches itself off automatically when the
battery voltage is low.
NOTE
Read the operating instructions for the charger for further
information about the charging procedure.
6.1 Inserting the battery 3
CAUTION
Check that the power tool is switched off and the
switch interlock activated before fitting the battery.
CAUTION
Before inserting the battery in the power tool, check
to ensure that the battery terminals and the contacts
in the power tool are free from foreign objects.
CAUTION
A falling battery may present a risk of injury to yourself
and others.
NOTE
Check that the battery is securely seated in the tool.
6.2 Removing the battery from the power tool 4
6.3 Transport and storage of batteries
CAUTION
Fire hazard. Never transport batteries in loose, bulk form.
There is a risk of short circuiting.
Pull the battery out of the locked position (working posi-
tion) and move it into the first latching position (transport
position).
Observe national and international transport regulations
when shipping batteries (transportation by road, rail, sea
or air).
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7Operation
NOTE
If the blade has jammed, the tool will not restart by itself
when the pressure applied to it is removed. The switch-on
interlock and the on/off button must be pressed again.
DANGER
Remove the battery from the power tool before mak-
ing any adjustments, before changing accessories
and before storing the power tool. Such preventive
safety measures reduce the risk of starting the tool acci-
dentally.
DANGER
Do not switch the power tool on if the saw blade,
the blade guard or the pivoting guard are not fitted
correctly.
CAUTION
Check all safety devices each time before using the
saw. Open the pivoting guard fully and check that the
guard automatically returns to the fully closed position
when released. Clean the pivoting guard if necessary
or have the power tool repaired by Hilti Service if it
malfunctions.
7.1 Changing the saw blade
CAUTION
Wear protective gloves when changing saw blades.
The saw blade, clamping flange and clamping screw get
hot and the cutting edges of the saw blade are sharp.
CAUTION
Checkthatthebladetobefittedcomplieswiththe
technical requirements and that it is well sharpened. A
sharp saw blade is an essential requirement for a perfect
cut.
7.1.1 Removing the saw blade 5
1. Insert the hex. socket wrench in the saw blade
clamping screw.
2. Press the drive spindle lockbutton and hold it in this
position.
3. Turn the saw blade clamping screw with the hex.
socket wrench until the spindle lockbutton engages
fully.
4. Release the clamping screw by turning the hex.
socket wrench further in the direction of the
direction-of-rotation arrow.
5. Remove the clampingscrew from the outer clamping
flange.
6. Open the pivoting guard by swinging it to the side
and then remove the saw blade.
NOTE If necessary, the mounting flange can be
removed for cleaning.
7.1.2 Fitting the saw blade 6
1. Clean the mounting flange and the clamping flange.
2. Fit the mounting flange onto the drive spindle the
right way round.
3. Open the pivoting guard.
4. CAUTION Observe the direction-of-rotation ar-
row on the saw blade and on the power tool.
They must correspond.
Fit the new saw blade.
5. Fit the outer clamping flange the right way round.
6. Insert the clamping screw.
7. Insertthehex.socketwrenchinthesawblade
clamping screw.
8. Press the drive spindle lockbutton.
9. Secure the clamping flange with the clamping screw
by turning the hex. socket wrench in the opposite
direction to the direction-of-rotation arrow.
The spindle lockbutton engages as you do so.
10. Before using the power tool, check that the saw
blade is correctly seated and tightened securely.
7.2 Adjusting the cutting depth 7
NOTE
The cutting depth set should always be approx. 5 to 10
mm greater than the thickness of the material to be cut.
NOTE
The depth setting can be read from the scale and pointer
at the rear of the blade guard.
7.3 Adjusting the cutting angle 8
The cutting angle preset makes it easy to set the max-
imum angle (22.5°, 45°, 50°).
1. Release the cutting angle adjustment clamping
lever.
2. Pivot the base plate to the 0° position.
3. Set the preset angle pointer to the desired maximum
angle.
4. Pivot the base plate to the desired angle.
5. Tighten the cutting angle adjustment clamping lever.
7.4 Sawing along a line 9
NOTE
Secure the workpiece to prevent movement.
NOTE
Position the workpiece so that the saw blade is free to
rotate beneath it.
NOTE
Check to ensure that the on / off switch on the power
tool is in the “off” position.
NOTE
Position the forward section of the saw’s base plate on
the workpiece but do not bring the blade into contact
with the workpiece.
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1. Fit the battery into the power tool.
2. If the switch-on interlock has been pressed, switch
the power tool on by pressing the on/off button.
3. Guide the saw along the cutting line on the work-
piece at a suitable speed.
7.5 Fitting and using the parallel guide (rip
fence) 
The rip fence (parallel guide) can be used to make accur-
atecutsalongtheedgeofaworkpieceortocutstripsof
equal width.
The parallel guide (single-arm/twin-arm) can be fitted on
either side of the base plate. The twin-arm parallel guide
can be used only with the large base plate.
7.6 Using the saw on the guide rail
NOTE
When using a saw with a small base plate, please use a
guide rail adapter that fits the guide rail.
7.6.1 Fitting or removing the saw from the guide
rail adapter (small base plate) 
The parallel guide (rip fence) must be removed before the
guide rail adapter can be used.
To remove the saw, pull the front retaining lug forward
slightly and lift the saw up out of the guide rail adapter.
7.6.2 Longitudinal cuts at 0° 
Place the saw on the guide rail with the groove marked
“0°” on the rib on the rail.
7.6.3 Longitudinal cuts at angles of 1° - 50° 
CAUTION
The saw must be engaged in the correct groove. If the
saw is engaged in the wrong groove, the saw blade will
collide with the guide rail.
Place the saw on the guide rail with the groove marked
“1°- 50°” on the rib on the rail.
7.7 Using the saw on the guide rail 
1. Secure the guide rail from below with two screw
clamps.
NOTE The saw must be placed on the guide rail in
theareabeforetheworkpiece.
2. CAUTIONTakecaretoensurethatthesawblade
is not in contact with the workpiece.
Place the saw on the guide rail in the saw mounting
area of the rail (a short distance before the starting
point of the cut).
3. Switch the power tool on.
4. Push the saw steadily across the workpiece.
The pivoting guard opens as it contacts the actu-
atingedgeatthesideoftheguiderailandsub-
sequently closes at the end of the rail as the cut is
completed.
7.8 Using the saw with a dust and chip removal
system
The circular saw is equipped with a hose connector
suitable for use with common types of vacuum cleaner
hose. In order to connect the vacuum cleaner hose to the
saw, use of a suitable adapter may be necessary.
7.9 Using the saw without a dust and chip removal
system
Check that the sawdust is ejected without obstruction.
If necessary, the direction of ejection can be altered by
turning the hose connector.
7.10 Procedure when sawdust channel is blocked
1. Remove the battery from the power tool.
2. Clean the chip / dust channel.
NOTE Remove the saw blade if necessary.
3. Check for misalignment or binding of moving parts,
breakage of parts and any other condition that may
affect the power tool’s operation.
8 Care and maintenance
WARNING
Repairs to the electrical section of the power tool may
be carried out only by trained electrical specialists.
8.1 Care of the power tool
CAUTION
Keep the power tool, especially its grip surfaces,
clean and free from oil and grease. Do not use clean-
ing agents which contain silicone.
Never operate the power tool when the ventilation slots
are blocked. Clean the ventilation slots carefully using
a dry brush. Do not permit foreign objects to enter the
interior of the power tool. Clean the outside of the power
tool at regular intervals with a slightly damp cloth. Do
not use a spray, steam pressure cleaning equipment or
running water for cleaning. This may negatively affect the
electrical safety of the power tool.
8.2 Cleaning the safety devices
1. Remove the saw blade before cleaning the safety
devices.
2. Clean the safety devices carefully with a dry brush.
3. Useasuitabletooltoremovedepositsorwood
chips from the inside surfaces of the safety devices.
4. Fit the saw blade.
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8.3 Care of the Li‑ion battery
NOTE
Battery performance drops at low temperatures.
NOTE
Store the battery in a cool and dry place.
In order to achieve maximum battery life, stop using the
battery as soon as a significant drop in battery perform-
ance is noticed.
NOTE
- If use continues, further battery discharge will be
stopped automatically before the battery cells suffer
damage.
- Charge the batteries using the specified and approved
Hilti battery chargers for Li‑ion batteries.
8.4 Checking the power tool after care and
maintenance
After carrying out care and maintenance work on the
power tool, check that all protective and safety devices
are fitted and that they function faultlessly.
To check the pivoting guard, open the guard fully by
moving the guard operating lever.
The pivoting guard must close quickly and completely
when the guard operating lever is released.
9 Troubleshooting
Fault Possible cause Remedy
The power tool doesn’t run. The battery is discharged or is not
pushed all the way in. The battery must be heard to engage with a double click or, respectively,
needs to be charged.
Electrical fault. Remove the battery from the tool and
contact Hilti Service.
The power tool doesn’t run. The
LED blinks. The battery is discharged. Charge the battery.
The battery is hot. Insert the battery in the charger or
allow it to cool down.
The on/off button cannot be
pressed, i.e. the button is
locked.
Not a fault (safety function). Press the switch-on interlock.
Running speed suddenly drops
considerably. The battery is discharged or the cut- ting pressure applied to the power
tool is too high.
Change the battery and charge the
empty battery. Reduce the feed pres-
sure applied to the power tool.
The battery runs down more
quickly than usual. Very low ambient temperature. Allow the battery to warm up slowly to room temperature.
The power tool does not restart
by itself after the saw blade has
stalled.
The overload cut-out has been activ-
ated. Press the switch-on interlock and the on/off button again.
The battery doesn’t engage with
an audible double click. The retaining lugs on the battery are dirty. Clean the retaining lugs and push the battery in until it engages. Contact
Hilti Service if the problem persists.
The power tool or the battery
becomes very warm. Electrical fault. Switch the power tool off immedi- ately, remove the battery from the
tool and allow it to cool down while
keeping an eye on it, contact Hilti
Service.
The power tool has been overloaded
(application limits exceeded). Use the right power tool for the job (don’t use a low-powered tool for
heavy work).
No / reduced suction power. Chip ejector channel blocked. Clean out the chip ejector channel.
The power tool switches itself
off. The overload/overheating cut-out has been activated. Release the on/off switch and then press it again. Allow the system to
cool down if necessary.
The pivoting guard doesn’t
close. Dirt or dust. Clean the parts and contact Hilti Ser-
vice if the problem persists.
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Fault Possible cause Remedy
The power tool vibrates
strongly. The saw blade is fitted incorrectly. Fit the saw blade correctly.
See section: 7.1.2 Fitting the saw
blade 6
10 Disposal
CAUTION
Improper disposal of the equipment may have serious consequences: the burning of plastic components generates
toxic fumes which may present a health hazard. Batteries may explode if damaged or exposed to very high
temperatures, causing poisoning, burns, acid burns or environmental pollution. Careless disposal may permit
unauthorized and improper use of the equipment. This may result in serious personal injury, injury to third parties and
pollution of the environment.
CAUTION
Dispose of defective batteries right away. Keep them out of reach of children. Do not disassemble or incinerate the
batteries.
CAUTION
Batteries that have reached the end of their life must be disposed of in accordance with national regulations or returned
to Hilti.
Most of the materials from which Hilti power tools or appliances are manufactured can be recycled. The materials
must be correctly separated before they can be recycled. In many countries, Hilti has already made arrangements for
taking back your old power tools or appliances for recycling. Please ask your Hilti customer service department or
Hilti representative for further information.
For EC countries only
Disposal of electric tools together with household waste is not permissible.
In observance of the European Directive on waste electrical and electronic equipment and its imple-
mentation in accordance with national law, electrical appliances that have reached the end of their life
must be collected separately and returned to an environmentally compatible recycling facility.
11 Manufacturer’s warranty - tools
Please contact your local Hilti representative if you have
questions about the warranty conditions.
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12 EC declaration of conformity (original)
Designation: Cordless circular saw
Type: SC 70W‑A22
Generation: 01
Year of design: 2014
We declare, on our sole responsibility, that this product
complies with the following directives and standards:
2006/42/EC, until 19th April 2016: 2004/108/EC, from
20th April 2016: 2014/30/EU, 2006/66/EC, 2011/65/EU,
EN 60745‑1, EN 60745‑2‑5, EN ISO 12100.
Hilti Corporation, Feldkircherstrasse 100,
FL‑9494 Schaan
Paolo Luccini Tassilo Deinzer
Head of BA Quality and Process Man-
agement
Executive Vice President
Business Area Electric Tools & Ac-
cessories
Business Unit Power
Tools & Accessories
09/2015 09/2015
Technical documentation filed at:
Hilti Entwicklungsgesellschaft mbH
Zulassung Elektrowerkzeuge
Hiltistrasse 6
86916 Kaufering
Deutschland
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*2092403*
2092403
Hilti Corporation
LI-9494 Schaan
Tel.: [phone]
Fax: [phone]
www.hilti.com
Hilti = registered trademark of Hilti Corp., Schaan
Pos. 2 | 20150515
Printed: 28.05.2015 | Doc-Nr: PUB / 5206198 / 000 / 02