Hilti WSR 900 User manual

376750
Operating instructions en
Mode d’emploi fr
Manual de instrucciones es
WSR 900
WSR 900-PE
WSR 1250-PE
WSR 1400-PE
Printed: 12.01.2016 | Doc-Nr: PUB / 5262999 / 000 / 00

This Product is Certified
Ce produit est certifié
Este producto esta certificado
Este produto está certificado
C US
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en
It is essential that the operating instructions
are read before the tool is operated for the
first time.
Always keep these operating instructions
together with the tool.
Ensure that the operating instructions
are with the tool when it is given to other
persons.
1. General information
1.1 Signal words and their meaning
-WARNING-
The word WARNING is used to draw attention to a poten-
tially dangerous situation which could lead to severe
personal injury or death.
-CAUTION-
Used to draw attention to a potentially dangerous situa-
tion which could lead to minor personal injury or dam-
age to the equipment or other property.
-NOTE-
Used to draw attention to an instruction or other useful
information.
1.2 Pictograms
Contents Page
1. General information 1
2. General safety rules 2
3. Specific safety rules and symbols 3
4. Functional description 5
5. Assembly 6
6. Operation 7
7. Care and maintenance 8
8. Blades and accessories 8
9. Troubleshooting 9
10. Disposal 9
11. Manufacturer's warranty – tools 10
Operating controls and parts 
햲Blade clamp / blade holder
햳Orbital action selector switch
(only WSR 900-PE / WSR 1250-PE / WSR 1400-PE)
햴Stroke rate regulator
(only WSR 900 / WSR 900-PE / WSR 1400-PE)
햵Transport lock
햶Control switch
햷Type plate
햸Motor
햹Gearing section
햺Front-end grip area (hand guard)
햻Lockbutton for adjusting the contact shoe
햽Contact shoe
햾Saw blade (insert tool)
These numbers refer to the corresponding illustra-
tions. The illustrations can be found on the fold-out cover
pages. Keep these pages open while studying the oper-
ating instructions.
In these operating instructions, the WSR 900 / WSR 900-
PE / WSR 1250-PE / WSR 1400-PE reciprocating saw
is referred to as "the tool".
Location of identification data on the tool
The type designation and serial number can be found on
the rating plate on the tool. Make a note of this data in
your operating instructions and always refer to it when
making an enquiry to your Hilti representative or service
department.
Type:
Serial no.:
Warning signs
General
warning Warning: electricity Warning: hot surface
Obligation signs
Wear
ear
protection
Wear
protective
gloves
Wear
breathing
protection
Wear
eye
protection
Read the
operating
instructions
before use.
Symbols
WSR 900 / WSR 900-PE / WSR1250-PE /
WSR1400-PE reciprocating saw
ORIGINAL OPERATING INSTRUCTIONS
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2. General safety rules
2.1 General Power Tool Safety Warnings
a) WARNING
Read all safety warnings and 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.
2.1.1 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 atmos-
pheres, such as in the presence of flammable liq-
uids, 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 mod-
ify 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 elec-
tric shock.
b) Avoid body contact with earthed or grounded sur-
faces such as pipes, radiators, ranges and refrig-
erators. 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 car-
rying, 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 exten-
sion cord suitable for outdoor use. Use of a cord suit-
able 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 com-
mon sense when operating a power tool. Do not use
a power tool while you are tired or under the influ-
ence 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 turn-
ing the power tool on. A wrench or a key left attached
to a rotating part of the power tool may result in per-
sonal injury.
e) Do not overreach. Keep proper footing and balance
at all times. This enables better control of the pow-
er tool in unexpected situations.
f) Dress properly. Do not wear loose clothing or jew-
ellery. 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 col-
lection 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 children
and do not allow persons unfamiliar with the pow-
er 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 oper-
ation. 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 operations dif-
ferent from those intended could result in a hazardous
situation.
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3. Specific safety rules and symbols
3.1 Basic information concerning safety
In addition to the information relevant to safety given
in each of the sections of these operating instructions,
the following points must be strictly observed at all times.
-WARNING-
Read all safety precautions and instructions! Failure to
observe the following safety precautions and instruc-
tions may lead to electric shock, fire and/or serious injury.
3.2 Take the necessary precautions to make the
workplace safe
●Ensure that the workplace is well ventilated.
●Keep the working area tidy. Objects which could cause
injury should be removed from the working area. Untidi-
ness at the workplace may lead to accidents.
●Keep the area above and below the cutting line free of
obstacles.
●Wear suitable working clothing. Wear a hair net if you
have long hair.
●Do not permit other persons to touch the electric tool
or the extension cord.
●Avoid unusual body positions. Work from a secure
stance and stay in balance at all times.
●To avoid tripping and falling when working, always lead
the supply cord and extension cord away to the rear.
●Concealed electric cables or gas and water pipes pre-
sent a serious hazard if damaged while you are work-
ing. Accordingly, check the area in which you are work-
ing beforehand (e.g. using a metal detector).
●Unknown base materials should be examined in order
to avoid personal injury or the possibility of cutting
into pipes or cables. Use the right blade for the mate-
rial being cut.
●Do not cut unless there is proper clearance beyond
the workpiece being cut. The blade may cause the tool
to kick-back if it strikes a hidden object.
●Before cutting pipes, always first ensure that the pipes
contain no liquids. Empty the pipes if necessary. The
tool is not water or moisture proof. Liquids running
out may cause a short circuit in the tool resulting in an
electric shock being received. When cutting pipes, hold
the tool so that it is higher than the pipe being cut.
3.3 General safety precautions
●To ensure efficient and safe operation, the contact
shoe of the tool must be pressed against the work-
piece .
●Keep the tool, especially its grip surfaces, clean and
free from oil and grease.
●Always hold the tool securely, with both hands on the
grips provided . Make sure to grip the tool and posi-
tion your hands and fingers so they will not contact
or slip into the area of the blade clamp or saw blade.
●Switch on the tool only after it has been brought into
position where the cut is to be made.
●Do not start the tool with the blade contacting the work
surface.
●When cutting, always guide the tool away from the
body.
●Switch the tool off before transporting it.
●Always allow the tool to come to a complete stop before
removing it from the workpiece.
●Never place your hands in front of or on the saw blade.
●Check the tool for possible damage. Protective devices
and any parts that may have suffered slight damage
should be checked for correct operation and func-
tionality before further use of the electric tool. Safety
devices or other parts that are found to be damaged
must be replaced or repaired properly by an autho-
rized repair workshop unless otherwise indicated in
the operating instructions.
●Always use saw blades of adequate length. To help
avoid kick-back while sawing, the blade must always
project at least 40 mm (1.5 in) beyond the workpiece
during the stroke cycle .
●Children must be instructed not to play with the tool.
●The tool is not intended for use by children, by debil-
itated persons or those who have received no instruc-
tion or training.
3.3.1 Mechanical
●Ensure that the saw blades used are equipped with the
2.1.5 Service
a) Have your power tool serviced by a qualified repair
person using only identical replacement parts. This
will ensure that the safety of the power tool is main-
tained.
2.2 Additional safety rules
2.2.1 Personal safety
a) Hold power tool by insulated gripping surfaces,
when performing an operation where the cutting
accessory may contact hidden wiring or its own
cord. Cutting accessory contacting a "live" wire may
make exposed metal parts of the power tool "live" and
could give the operator an electric shock.
b) Use clamps or another practical way to secure and
support the workpiece to a stable platform. Hold-
ing the work by hand or against your body leaves it
unstable and may lead to loss of control.
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correct connection end system and that they are prop-
erly fitted and secured in the blade clamp.
3.3.2 Electrical
●Protect yourself against electric shock. Avoid body
contact with earthed / grounded objects, e.g. pipes
and radiators etc.
●Check the condition of the tool’s supply cord at reg-
ular intervals. The supply cord should be replaced by
a trained electrical specialist if damage is found. Also
regularly check the condition of extension cords and
replace these if damage is found.
●Do not touch the supply cord in the event of it suffer-
ing damage while working. Disconnect the supply cord
plug from the power supply.
●The tool should be repaired only by a trained electri-
cal specialist (Hilti service centre) using original Hilti
spare parts. Failure to observe this point my result in
a risk of accident to the user.
●Do not use the supply cord for purposes for which it
is not intended.
●Never carry the tool by the power supply cord.
●Do not pull the plug out of the socket by pulling the
supply cord.
●Do not expose the supply cord to heat, oil or sharp
edges.
●When working outdoors, use only extension cords
approved and correspondingly marked as suitable for
outdoor use.
●Avoid using extension cords with multiple sockets
and the simultaneous use of several electric tools con-
nected to one extension cord.
●Never operate the tool when it is dirty or wet. Dust or
dampness on the surface of the tool make it difficult
to hold and, under unfavorable conditions, may lead
to electric shocks. Accordingly, have the tool checked
regularly at a Hilti service center if it is used frequently
for cutting conductive materials.
3.3.3 Thermal
●The saw blade may become hot during use. You should
therefore wear protective gloves when changing saw
blades.
●When using the pipe cutting adaptor (accessory),
especially when cutting large-diameter pipes, apply
only moderate pressure and select a suitable cutting
speed in order to avoid overheating the tool.
●The cutting produced when sawing, especially metal
cuttings, may be hot. Wear suitable protective clothing.
3.3.4 Dust
●Wear respiratory protection when the work causes
dust.
●Before beginning work, find out the hazard class of
the dust produced by the work. Use only an industri-
al vacuum cleaner with an officially approved protec-
tion classification in compliance with your local dust
control regulations for work with the tool.
●Proposition 65 warning: This product contains or pro-
duces an exposure to chemicals known to the State
of California to cause cancer and birth defects (or other
reproductive harm).
●WARNING: Some dust created by grinding, sand-
ing, cutting and drilling contains chemicals known
to cause cancer, birth defects, infertility or other
reproductive harm; or serious and permanent res-
piratory or other injury. Some examples of these
chemicals are: lead from lead-based paints, crystalline
silica from bricks, concrete and other masonry prod-
ucts and natural stone, arsenic and chromium from
chemically-treated lumber. Your risk from these expo-
sures varies, depending on how often you do this type
of work. To reduce exposure to these chemicals, the
operator and bystanders should work in a well?ven-
tilated area, work with approved safety equipment,
such as respiratory protection appropriate for the
type of dust generated, and designed to filter out
microscopic particles and direct dust away from the
face and body. Avoid prolonged contact with dust.
Wear protective clothing and wash exposed areas
with soap and water. Allowing dust to get into your
mouth, eyes, or to remain on your skin may promote
absorption of harmful chemicals.
3.4 Requirements to be met by users
●The tool is intended for professional use.
●The tool may be operated, serviced and repaired only
by authorized, trained personnel. This personnel must
be informed of any special hazards that may be encoun-
tered.
●Take breaks between working and do exercises your
fingers to relax the muscles and improve the blood
circulation in your fingers.
3.5 Personal protective equipment
The user and any other persons in the vicinity must wear
suitable eye protection. Ear protection and protective
gloves should be worn as conditions warrant. They must
also wear breathing protection if no dust removal sys-
tem is used.
Wear
ear
protection
Wear
protective
gloves
Wear
breathing
protection
Wear
eye
protection
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3.6 Protective devices
Never use the tool without the hand guard fitted.
4. Functional description
4.1 Use of the WSR 900 / WSR 900-PE as directed
●Typical working environments include rescue services,
public authorities, farming and forestry, general con-
struction, renovation and conversion work, metal con-
struction, plumbing / heating / air-conditioning instal-
lation trades, in workshops and on construction sites.
●The tool may be used for cutting wood, wood-like
materials, metals and plastics.
●The tool must be used in a dry environment.
●The tool may be powered only by an electric supply
voltage in compliance with the information given on
the type plate.
●The tool is designed for two-handed operation.
●Use only the blades and accessories listed in the oper-
ating instructions.
●Do not use the tool to cut bricks, concrete, cellular
concrete, natural stone or tiles.
●Use the tool within its intended cutting performance
range and with suitable blades (do not use blades of
the wrong size or reciprocating saw blades not equipped
with a 1/2" connection end).
●Cutting materials containing asbestos is not permissible.
4.2 Use of the WSR 1250-PE / WSR 1400-PE as
directed
●Typical working environments include general con-
struction, renovation and conversion work, metal con-
struction, plumbing / heating / air-conditioning instal-
lation trades, rescue services, public authorities, farm-
ing and forestry, in workshops and on construction
sites.
●The tool may be used for cutting wood, wood-like
materials, metals, plastics, bricks, cellular concrete
and tiles.
●The tool must be used in a dry environment.
●The tool may be powered only by an electric supply
voltage in compliance with the information given on
the type plate.
●The tool is designed for two-handed operation.
●Use only the blades and accessories listed in the oper-
ating instructions.
●Do not use the tool to cut concrete or natural stone.
●Use the tool within its intended cutting performance
range and with suitable blades (do not use blades of
the wrong size or reciprocating saw blades not equipped
with a 1/2" connection end).
●Cutting materials containing asbestos is not permis-
sible.
4.3 The items supplied include:
– Reciprocating saw and saw blade
– Operating instructions
– Toolbox
See figure and the explanations of operating controls
and components on page 1.
Technical data
Tool WSR 900 WSR 900-PE WSR 1250-PE WSR 1400-PE
Nominal power
rating 900 W 900 W 1250 W 1400 W
Nominal
voltage 120 V / 8.5 A 120 V / 8.5 A 120 V / 12 A 120 V / 13 A
Nominal
current input
Mains
frequency 50 / 60 Hz 50 / 60 Hz 50 / 60 Hz 50 / 60 Hz
Weight of tool 6.28 lbs (2.85 kg) 7.2 lbs (3.26 kg) 9.3 lbs (4.2 kg) 9.9 lbs (4.5 kg)
Dimensions 17.4×3.5×8.3 in 17.4×3.5×8.3 in 19.4×4×7.1 in 22.6×4×7.4 in
(L×B×H) (442×88×211 mm) (442×88×211 mm) (493×101×180 mm) (574×101×188 mm)
Stroke rate 0–2700 min–1 0–2700 min–1 0–2700 min–1 0–2700 min–1
Stroke 11/4in (32 mm) 11/4in (32 mm) 11/4in (32 mm) 11/4in (32 mm)
Symbols used on the tool:
V volts n0no load speed
AC alternating current /min revolutions per minute
Hz hertz ∅diameter
A amperes Zdouble insulated
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5. Assembly
-NOTE-
The electric supply voltage must comply with the infor-
mation on the type plate.
If extension cords are used: Use only extension cords
of a type approved for the intended purpose and of ade-
quate cross section. Failure to observe this point may
result in reduced performance and may cause the cord
to overheat. Replace damaged extension cords. Use only
correspondingly marked and approved extension cords
for working outdoors. Recommended minimum cross
sections and max. cord lengths:
Mains Conductor cross section AWG
voltage 1.5 mm22.5 mm214 12
110–120 V 20 m 40 m 75 ft 125 ft
230 V 50 m 100 m – –
5.1 Fitting the saw blade 
1. Unplug the supply cord from the electric socket.
2. Check that the connection end of the blade is clean.
The blade clamp should also be kept clean. Use only
saw blades with 1/2″connection ends .
3. Turn the blade clamp locking sleeve in a counter-
clockwise direction and hold it in this position.
4. Push the saw blade into the blade clamp.
5. Release the locking sleeve and allow it to move back.
It should be heard to engage.
6. Check that the clamp has engaged by pulling on the
blade.
5.2 Removing the saw blade 
1. Unplug the supply cord from the electric socket.
2. Turn the blade clamp locking sleeve in a counter-
clockwise direction and hold it in this position.
-CAUTION-
●The cutting edges of the saw blade
are sharp.
●The cutting edges may present a risk
of injury.
●Moving parts may present a risk of
injury.
●Wear protective gloves.
3. Pull the blade out of the clamp toward the front of the tool.
4. Release the locking sleeve.
5.3 Adjusting the contact shoe 
The contact shoe can be adjusted to provide optimum
use of the blade length and to improve access in corners.
1. Unplug the supply cord from the electric socket.
2. Remove the saw blade (see 5.2).
3. Press the contact shoe lockbutton and hold it in this
position.
4. Slide the contact shoe forward or back into the desired
position.
5. Release the lockbutton.
6. Pull on the contact shoe to check that it has engaged.
5.4 Using the pipe cutting adaptor
(accessory)   
1. Unplug the supply cord from the electric socket.
2. Remove the saw blade (see 5.2).
3. Press the contact shoe lockbutton and hold it in this
position.
4. Pull the contact shoe away from the tool toward the
front.
5. Push the pipe cutting adaptor into the tool from the
front until it is in the desired position.
6. Release the lockbutton.
7. Pull on the pipe cutting adaptor to check that it has
engaged.
8. Open the screw clamp to the maximum position.
9. Place the adapter chain around the pipe, locking the
chain to the fitting.
-NOTE- The handle should be at a 45° angle.
5.5 Fitting the side handle (accessory) 
1. Unplug the supply cord from the electric socket.
2. Remove the saw blade (see 5.2).
3. Place the adaptor around the front grip section from
above and close the adaptor.
4. Slide the side handle onto the adaptor from the front.
5. Secure the side handle by turning the screw knob on
the handle.
5.6 Positioning the side handle (accessory) 
1. Unplug the supply cord from the electric socket.
2. Slacken the screw knob on the side handle.
3. Bring the side handle into the desired position.
4. Secure the side handle by turning the screw knob on
the handle.
Stroke rate Constant-speed elec- Constant-speed elec- Constant-speed elec- Constant-speed elec-
regulation tronics with variable tronics with variable tronics with variable tronics with variable
stroke rate, stroke rate stroke rate, stroke rate stroke rate stroke rate, stroke rate
regulator with 6 pos. regulator with 6 pos. regulator with 6 pos.
Blade clamp Keyless, for standard 1/2″blades
Orbital action on / off (only WSR900-PE / WSR1250-PE / WSR 1400-PE)
Double insulated Protection class II (double insulated) Z
Right of technical changes reserved
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6. Operation
-NOTE-
●To ensure good cutting performance and ease the load
on the tool, use only saw blades that are in good con-
dition.
●Do not overload the tool.
-WARNING-
●When working, always guide the tool away from the
body.
●Lift the tool away from the workpiece only once the
blade has come to a standstill.
●Do not lay the tool down before the blade has come
to a standstill.
-CAUTION-
●The cutting edges of the saw blade
are sharp.
●The cutting edges may present a risk
of injury.
●Wear protective gloves.
-WARNING-
●The sawing operation swirls up dust
and wood chips into the air.
●The dust and wood chips may be harm-
ful to the eyes and respiratory system.
●Wear protective goggles and breath-
ing protection.
-WARNING-
●Operation of the tool creates noise.
●Excessive noise may damage the
hearing.
●Wear ear protection.
-CAUTION-
●The saw blade becomes hot when
used for long periods.
●There is a risk of burning if the blade
is touched.
●Wear protective gloves.
6.0 Safe operation   
-DANGER-
The power tool must be pressed against the workpiece
until the contact shoe makes firm contact. This helps
ensure maximum safety and good performance.
-DANGER-
Always use saw blades that project at least 40 mm
beyond the workpiece over the entire length of the
blade stroke. This will help to avoid violent kickback.
-WARNING-
Always hold the power tool securely with both hands
on the grips provided. Never use the power tool with-
out the hand guard fitted. Do not use the blade hold-
er cover as a grip. The blade holder presents a risk of
injury.
6.1 Switching on/off
1. Plug the supply cord into the electric socket.
2. Press the transport lock and then press the control
switch.
6.2 Stroke rate
6.2.1 Adjusting the stroke rate 
The recommended stroke rate can be selected by turn-
ing the stroke rate regulator. When the control switch is
pressed the tool will then run up to the pre-selected speed.
The electronic speed control system maintains constant
stroke rate even under load. The recommended stroke
rate settings and information concerning the correct
choice of saw blade can be found in the product infor-
mation and in the corresponding table of applications.
6.2.2 Recommended stroke rates
(1 = low stroke rate, 6 = high stroke rate)
Material to be cut Recommended
stroke rate
Wood 5–6
Wood with embedded nails 5–6
Interior finishing, drywall 3–4
Plastic 3–4
Steel 2–3
Non-ferrous metals 2–3
Aluminum 2–3
Stainless steel 1
The above settings are general guidelines intended to
provide optimum cutting performance. These also apply
when the pipe cutting adapter (accessory) is used. The
optimum setting may differ from these recommenda-
tions depending on the saw blade used, the electric sup-
ply voltage and on how the tool is used. Setting the wrong
stroke rate may cause the saw blade to wear more quickly,
and could damage the tool.
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7. Care and maintenance
Unplug the supply cord from the mains socket.
7.1 Care of blades
Clean off dirt and dust deposits and protect your blades
from corrosion by wiping them from time to time with
an oil-soaked rag.
7.2 Care of the tool
●Keep the blade clamp clean.
●The tool was lubricated adequately when it was man-
ufactured. After long periods of heavy use it is rec-
ommended that the tool is inspected at a Hilti repair
center. This will increase the life expectancy of the tool
and avoid unnecessary repair costs.
●Repairs to the electrical section of the tool may be car-
ried out only by a trained electrical specialist.
CAUTION
Keep the power tool, especially its grip surfaces, clean
and free from oil and grease. Do not use cleaning agents
which contain silicone.
The outer casing of the power tool is made from impact-
resistant plastic. Sections of the grip are made from a
synthetic rubber material.
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 inte-
rior 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 elec-
trical safety of the power tool.
7.3 Maintenance
Check all external parts of the tool for damage at regular
intervals and check that all controls operate faultlessly.
Do not operate the tool if parts are damaged or when the
controls do not function faultlessly. If necessary, your
electric tool should be repaired at a Hilti repair center.
Repairs to the electrical section of the tool may be car-
ried out only by trained electrical specialists.
7.4 Checks after care and maintenance
After care and maintenance, check that the hand guard
and contact shoe are fitted and that they function fault-
lessly.
6.3 Orbital action (only WSR900-PE /
WSR 1250-PE / WSR 1400-PE) 
Use of the orbital action can increase cutting perfor-
mance in certain soft materials such as wood materials.
The orbital action can be switched on or off by moving
the orbital action selector switch as far as it will go in
each position. Move the switch only when the motor has
stopped.
6.3.1 Orbital action off
Orbital action off
6.3.2 Orbital action on
Orbital action on
6.4 Plunge sawing 
The plunge sawing technique should be used only on
soft materials and when the orbital action is switched
off. A little practice is required in order to be able to
plunge the blade into the material while the tool is run-
ning and thus make cut-outs without first drilling a hole.
Plunge sawing is possible only with short saw blades.
Plunge cuts may be started with the tool in one of two
different positions:
– in the normal position
– or in the reversed position
1. Hold the tool with the front edge of the contact shoe
against the workpiece.
2. Press the transport lock and then press the control
switch.
3. Press the tool firmly against the workpiece and begin
the plunge movement by reducing the angle of the
tool (contact shoe) to the workpiece. It is important
to ensure that the tool is running before the blade is
brought into contact with the workpiece. The tool may
otherwise stall or kick-back.
4. Once the blade has passed through the workpiece,
bring the tool into the normal working position (the
entire surface of the shoe in contact) and then con-
tinue sawing along the line.
8. Blades and accessories
Saw blades
Pipe cutting adaptor
Side handle / Side handle adaptor
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10. Disposal
Most of the materials from which Hilti electric tools 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 electric tools for recycling. Please ask your Hilti customer service department or Hilti representa-
tive for further information.
Fault Possible cause Remedy
The tool doesn't start. Fault in mains supply. Plug in another electric appliance and
check whether it works.
Supply cord or plug defective. The cord should be checked and, if neces-
sary, replaced by an electrical specialist.
Control switch defective. The switch should be checked and, if neces-
sary, replaced by an electrical specialist.
The tool does not achieve Extension cord with inadequate cross Use an extension cord with adequate cross
full power. section used. section. (See "Assembly".)
Low stroke rate selected. Set the stroke rate regulator to the setting
recommended for the material to be cut
(see section "Assembly").
Control switch not pressed fully. Press the control switch as far as it will
go.
No orbital action Orbital action selector switch not Set the orbital action selector switch to
(only WSR900-PE / set to []. [] . The orbital action can be felt only
WSR 1250 PE / when sawing.
WSR 1400-PE).
Saw blade cannot be Locking sleeve not turned as far as Turn the locking sleeve as far as it will go
removed from the blade it will go. and remove the saw blade.
clamp.
Contact shoe or pipe Obstructed by blade. Remove the saw blade (see 5.2) and then
clamp cannot be removed remove the contact shoe.
frome the tool. Lockbutton is not fully pressed. Press the lockbutton fully and remove the
blade.
9. Troubleshooting
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11. Manufacturer's warranty – tools
Hilti warrants that the tool supplied is free of defects
in material and workmanship. This warranty is valid so
long as the tool is operated and handled correctly,
cleaned and serviced properly and in accordance with
the Hilti Operating Instructions, and the technical sys-
tem is maintained. This means that only original Hilti
consumables, components and spare parts may be
used in the tool.
This warranty provides the free-of-charge repair or
replacement of defective parts only over the entire lifes-
pan of the tool. Parts requiring repair or replacement
as a result of normal wear and tear are not covered by
this warranty.
Additional claims are excluded, unless stringent
national rules prohibit such exclusion. In particular,
Hilti is not obligated for direct, indirect, incidental
or consequential damages, losses or expenses in
connection with, or by reason of, the use of, or inabil-
ity to use the tool for any purpose. Implied warranties
of merchantability or fitness for a particular purpose
are specifically excluded.
For repair or replacement, send tool or related parts
immediately upon discovery of the defect to the address
of the local Hilti marketing organization provided.
This constitutes Hilti's entire obligation with regard to
warranty and supersedes all prior or contemporane-
ous comments and oral or written agreements con-
cerning warranties.
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*376750*
376750
Hilti Corporation
LI-9494 Schaan
Tel.: +423 / 234 21 11
Fax:+423 / 234 29 65
www.hilti.com
Hilti = registered trademark of Hilti Corp., Schaan
W 2827 | 0511 | 5-Pos. 3 | 1
Printed in Liechtenstein © 2011
Right of technical and programme changes reserved S. E. & O.376750 / G
Printed: 12.01.2016 | Doc-Nr: PUB / 5262999 / 000 / 00