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14 | English 
3 609 929 C88 | (17.3.14)
Bosch Power Tools
Entsorgung
Elektrowerkzeuge, Zubehör und Verpackungen sollen einer 
umweltgerechten Wiederverwertung zugeführt werden.
Werfen Sie Elektrowerkzeuge nicht in den Hausmüll!
Nur für EU-Länder:
Gemäß der Europäischen Richtlinie 
2012/19/EU über Elektro- und Elektronik-
Altgeräte und ihrer Umsetzung in nationales 
Recht müssen nicht mehr gebrauchsfähige 
Elektrowerkzeuge getrennt gesammelt und 
einer umweltgerechten Wiederverwertung 
zugeführt werden.
Änderungen vorbehalten.
English
Safety Notes
General Power Tool Safety Warnings
Read all safety warnings and all in-
structions. Failure to follow the warnings 
and instructions may result in electric shock, fire and/or seri-
ous injury.
Save all warnings and instructions for future reference.
The term “power tool” in the warnings refers to your mains-
operated (corded) power tool or battery-operated (cordless) 
power tool.
Work area safety
 Keep work area clean and well lit. Cluttered or dark areas 
invite accidents.
 Do not operate power tools in explosive atmospheres, 
such as in the presence of flammable liquids, gases or 
dust. Power tools create sparks which may ignite the dust 
or fumes.
 Keep children and bystanders away while operating a 
power tool. Distractions can cause you to lose control.
Electrical safety
 Power tool plugs must match the outlet. Never modify 
the plug in any way. Do not use any adapter plugs with 
earthed (grounded) power tools. Unmodified plugs and 
matching outlets will reduce risk of electric shock.
 Avoid body contact with earthed or grounded surfaces, 
such as pipes, radiators, ranges and refrigerators. 
There is an increased risk of electric shock if your body is 
earthed or grounded.
 Do not expose power tools to rain or wet conditions. 
Water entering a power tool will increase the risk of electric 
shock.
 Do not abuse the cord. Never use the cord for carrying, 
pulling or unplugging the power tool. Keep cord away 
from heat, oil, sharp edges and moving parts. Damaged 
or entangled cords increase the risk of electric shock.
 When operating a power tool outdoors, use an exten-
sion cord suitable for outdoor use. Use of a cord suitable 
for outdoor use reduces the risk of electric shock.
 If operating a power tool in a damp location is unavoid-
able, use a residual current device (RCD) protected 
supply. Use of an RCD reduces the risk of electric shock.
Personal safety
 Stay alert, watch what you are doing and use common 
sense when operating a power tool. Do not use a power 
tool while you are tired or under the influence of drugs, 
alcohol or medication. A moment of inattention while op-
erating power tools may result in serious personal injury.
 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.
 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 en-
ergising power tools that have the switch on invites acci-
dents.
 Remove any adjusting key or wrench before turning 
the power tool on. A wrench or a key left attached to a ro-
tating part of the power tool may result in personal injury.
 Do not overreach. Keep proper footing and balance at 
all times. This enables better control of the power tool in 
unexpected situations.
 Dress properly. Do not wear loose clothing or jewel-
lery. Keep your hair, clothing and gloves away from 
moving parts. Loose clothes, jewellery or long hair can be 
caught in moving parts.
 If devices are provided for the connection of dust ex-
traction and collection facilities, ensure these are con-
nected and properly used. Use of dust collection can re-
duce dust-related hazards.
Power tool use and care
 Do not force the power tool. Use the correct power tool 
for your application. The correct power tool will do the 
job better and safer at the rate for which it was designed.
 Do not use the power tool if the switch does not turn it 
on and off. Any power tool that cannot be controlled with 
the switch is dangerous and must be repaired.
 Disconnect the plug from the power source and/or 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.
 Store idle power tools out of the reach of children and 
do not allow persons unfamiliar with the power tool or 
these instructions to operate the power tool. Power 
tools are dangerous in the hands of untrained users.
 Maintain power tools. Check for misalignment or bind-
ing 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. 
WARNING
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Bosch Power Tools
3 609 929 C88 | (17.3.14)
Many accidents are caused by poorly maintained power 
tools.
 Keep cutting tools sharp and clean. Properly maintained 
cutting tools with sharp cutting edges are less likely to bind 
and are easier to control.
 Use the power tool, accessories and tool bits etc. in ac-
cordance 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.
Service
 Have your power tool serviced by a qualified repair per-
son using only identical replacement parts. This will en-
sure that the safety of the power tool is maintained.
Cut-off machine safety warnings
 The guard provided with the tool must be securely at-
tached to the power tool and positioned for maximum 
safety, so the least amount of wheel is exposed to-
wards 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.
 Use only bonded reinforced or diamond cut-off wheels 
for your power tool. Just because an accessory can be at-
tached to your power tool, it does not assure safe opera-
tion.
 The rated speed of the accessory must be at least equal 
to the maximum speed marked on the power tool. Ac-
cessories running faster than their rated speed can break 
and fly apart.
 Wheels must be used only for recommended applica-
tions. 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.
 Always use undamaged wheel flanges that are of cor-
rect diameter for your selected wheel. Proper wheel 
flanges support the wheel thus reducing the possibility of 
wheel breakage.
 The outside diameter and the thickness of your acces-
sory must be within the capacity rating of your power 
tool. Incorrectly sized accessories cannot be adequately 
guarded or controlled.
 The arbour size of wheels and flanges must properly fit 
the spindle of the power tool. Wheels and flanges with ar-
bour 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.
 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 undam-
aged 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 maxi-
mum no load speed for one minute. Damaged wheels will 
normally break apart during this test time.
 Wear personal protective equipment. Depending on 
application, use face shield, safety goggles or safety 
glasses. As appropriate, wear dust mask, hearing pro-
tectors, gloves and shop apron capable of stopping 
small abrasive or workpiece fragments. The eye protec-
tion 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.
 Keep bystanders a safe distance away from work area. 
Anyone entering the work area must wear personal 
protective equipment. Fragments of workpiece or of a 
broken accessory may fly away and cause injury beyond 
immediate area of operation.
 Hold the power tool by insulated gripping surfaces on-
ly, when performing an operation where the cutting ac-
cessory may contact hidden wiring or its own cord. Cut-
ting accessory contacting a “live” wire may make exposed 
metal parts of the power tool “live” and could give the op-
erator an electric shock.
 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.
 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.
 Do not run the power tool while carrying it at your side. 
Accidental contact with the spinning accessory could snag 
your clothing, pulling the accessory into your body.
 Regularly clean the power tool’s air vents. The motor’s 
fan will draw the dust inside the housing and excessive ac-
cumulation of powdered metal may cause electrical haz-
ards.
 Do not operate the power tool near flammable materi-
als. Sparks could ignite these materials.
 Do not use accessories that require liquid coolants. Us-
ing water or other liquid coolants may result in electrocu-
tion or shock.
Kickback and related warnings
 Kickback is a sudden reaction to a pinched or snagged ro-
tating 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 pinch-
ing. Abrasive wheels may also break under these condi-
tions.
Kickback is the result of power tool misuse and/or incor-
rect operating procedures or conditions and can be avoid-
ed by taking proper precautions as given below.
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16 | English 
3 609 929 C88 | (17.3.14)
Bosch Power Tools
 Maintain a firm grip on the power tool and position your 
body and arm to allow you to resist kickback forces. Al-
ways 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.
 Never place your hand near the rotating accessory. Ac-
cessory may kickback over your hand.
 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.
 Use special care when working corners, sharp edges, 
etc. Avoid bouncing and snagging the accessory. Cor-
ners, sharp edges or bouncing have a tendency to snag the 
rotating accessory and cause loss of control or kickback.
 Do not attach a saw chain, woodcarving blade, seg-
mented diamond wheel with a peripheral gap greater 
than 10 mm or toothed saw blade. Such blades create 
frequent kickback and loss of control.
 Do not “jam” the wheel or apply excessive pressure. Do 
not attempt to make an excessive depth of cut.  Over-
stressing the wheel increases the loading and susceptibili-
ty to twisting or binding of the wheel in the cut and the pos-
sibility of kickback or wheel breakage.
 When wheel is binding or when interrupting a cut for 
any reason, switch off the power tool and hold the pow-
er 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.
 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.
 Support panels or any oversized workpiece to minimize 
the risk of wheel pinching and kickback. Large work-
pieces tend to sag under their own weight. Supports must 
be placed under the workpiece near the line of cut and near 
the edge of the workpiece on both sides of the wheel.
 Use extra caution when making a “pocket cut” into ex-
isting walls or other blind areas. The protruding wheel 
may cut gas or water pipes, electrical wiring or objects that 
can cause kickback.
Additional safety warnings
Wear safety goggles.
 Use clamps or another practical way to secure and sup-
port the workpiece to a stable platform. Holding the 
work by your hand or against the body leaves it unstable 
and may lead to loss of control.
 Wear hearing protection, safety goggles, dust mask 
and gloves. As dust mask, use at least a particle filter-
ing half mask of filter class FFP 2.
 Use suitable detectors to determine if utility lines are 
hidden in the work area or call the local utility company 
for assistance. Contact with electric lines can lead to fire 
and electric shock. Damaging a gas line can lead to explo-
sion. Penetrating a water line causes property damage or 
may cause an electric shock.
 Do not touch the cutting disc after working before it 
has cooled. The cutting disc becomes very hot while work-
ing.
 When working with the machine, always hold it firmly 
with both hands and provide for a secure stance. The 
power tool is guided more secure with both hands.
Products sold in GB only: Your product is fitted with a 
BS 1363/A approved electric plug with internal fuse (ASTA 
approved to BS 1362).
If the plug is not suitable for your socket outlets, it should be 
cut off and an appropriate plug fitted in its place by an author-
ised customer service agent. The replacement plug should 
have the same fuse rating as the original plug.
The severed plug must be disposed of to avoid a possible 
shock hazard and should never be inserted into a mains sock-
et elsewhere.
Products sold in AUS and NZ only: Use a residual current de-
vice (RCD) with a rated residual current of 30 mA or less.
Product Description and Specifica-
tions
Read all safety warnings and all instruc-
tions. Failure to follow the warnings and in-
structions may result in electric shock, fire 
and/or serious injury.
While reading the operating instructions, unfold the graphics 
page for the machine and leave it open.
Intended Use
In conjunction with a dust-category M vacuum cleaner and 
with firm support of the cutting guide, the machine is intend-
ed to cut or slot mainly mineral materials such as reinforced 
concrete, brickwork and road surfaces without the use of wa-
ter.
Product Features
The numbering of the product features refers to the illustra-
tion of the machine on the graphics page.
1 On/Off switch
2 Cutting-depth scale
3 Chaser rollers
4 Auxiliary handle
5 Auxiliary-handle holder
6 Locking screw for auxiliary-handle holder
7 Spindle lock button
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Bosch Power Tools
3 609 929 C88 | (17.3.14)
8 Protection guard with cutting guide
9 Clamping lever for depth stop adjustment
10 Vacuum connection
11 Elbow
12 Vacuum hose*
13 Screw
14 Clamping lever for protection guard
15 Grinder spindle
16 Mounting flange
17 Diamond cutting disc*
18 Spacer discs
19 Clamping nut
20 Two-pin spanner for clamping nut*
21 Break-out tool*
*Accessories shown or described are not part of the standard de-
livery scope of the product. A complete overview of accessories 
can be found in our accessories program.
Technical Data
Noise/Vibration Information
Measured values determined according to EN 60745 (lime-
sand brick).
Typically the A-weighted noise levels of the product are: 
Sound pressure level 97 dB(A); Sound power level 
108 dB(A). Uncertainty K =3 dB.
Wear hearing protection!
Vibration total values a
h
 (triax vector sum) and uncertainty K 
determined according to EN 60745:
a
h
=9.0 m/s
2
, K<2.0 m/s
2
.
The vibration 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 anoth-
er. It may be used for a preliminary assessment of exposure.
The declared vibration emission level represents the main ap-
plications of the tool. However if the tool is used for different 
applications, with different accessories or insertion tools or is 
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 sig-
nificantly 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 pat-
terns.

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