STIHL KW, KB Owner's Manual

STIHL KB, KW

WARNING

Read and follow all safety
precautions in Instruction Manual –
improper use can cause serious or
fatal injury.

ADVERTENCIA

Lea y siga todas las precauciones
de seguridad dadas en el manual
de instrucciones – el uso incorrecto
puede causar lesiones graves o
mortales.

{

Instruction Manual
Manual de instrucciones

Instruction Manual
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Manual de instrucciones
23 - 46

Contents

English

Interchangeable Attachments 2
Guide to Using this Manual 2
Safety Precautions and Working

Techniques 3
Using the Unit 9
Approved Basic Power Tools 11
Mounting the Attachment 11
Fitting the Carrying Ring 13

Original Instruction ManualPrinted on chlorine-free paper

Mounting the Loop Handle 14
Fitting the Harness 15
Balancing the Trimmer/Brushcutter 16
Starting / Stopping the Engine 17
Storing the Machine 17
Replacing the Sweeping

Attachments 18
Maintenance and Care 18
Main Parts 19
Specifications 20
Special Accessories 20
Maintenance and Repairs 21
Disposal 21
Trademarks 21

Printing inks contain vegetable oils, paper can be recycled.

Allow only persons who fully understand
the manuals of the basic power tool and
your Bristle Brush or PowerSweep
attachment to operate this power tool
combination.

To receive maximum performance and
satisfaction from your STIHL Bristle
Brush or PowerSweep attachment, it is
important that you read, understand and
follow the safety precautions and the
operating and maintenance instructions
in chapter "Safety Precautions and
Working Techniques" before using your
Bristle Brush or PowerSweep
attachment. For further information you
can go to www.stihlusa.com.

Contact your STIHL dealer or the STIHL
distributor for your area if you do not
understand any of the instructions in the
two manuals.

WARNING

Because a power tool power head and
shaft equipped with a Bristle Brush or
PowerSweep attachment is a power
tool, some special safety precautions
must be observed to reduce the risk of
personal injury. Careless or improper
use may cause serious or even fatal
injury.

Always wear proper eye protection.

{

© ANDREAS STIHL AG & Co. KG, 2013

0458-509-8621-A. VA1.B13.

0000000744_002_GB

KB, KW

This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process
with electronic systems.

1

English

002BA322 KN

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Interchangeable
Attachments

The STIHL attachment may be mounted
to different STIHL power tools.

The approved power tool models are
listed in the chapter on "Approved Basic
Power Tools".

In this instruction manual the functional
unit formed by the basic power tool
power head and shaft and attachment is
referred to as the power tool.

Therefore, the separate instruction
manuals for the basic power tool and
attachment should be used together for
the power tool.

Always read and and make sure you
understand both instruction manuals
before using your power tool for the first
time and keep them in a safe place for
future reference.

Guide to Using this Manual

Pictograms

All the pictograms attached to or
embossed on the machine are shown
and explained in this manual.

Symbols in Text

Many operating and safety instructions
are supported by illustrations.

The individual steps or procedures
described in the manual may be marked
in different ways:

N A bullet marks a step or procedure.
A description of a step or procedure that

refers directly to an illustration may
contain item numbers that appear in the
illustration. Example:

N Loosen the screw (1).
N Lever (2) ...

In addition to the operating instructions,
this manual may contain paragraphs
that require your special attention. Such
paragraphs are marked with the
symbols and signal words described
below:

DANGER

Indicates an imminent risk of severe or
fatal injury.

WARNING

Indicates a hazardous situation which, if
not avoided, could result in severe or
fatal injury.

NOTICE
Indicates a risk of property damage,

including damage to the machine or its
individual components.

Engineering Improvements

STIHL’s philosophy is to continually
improve all of its products. As a result,
engineering changes and improvements
are made from time to time. Therefore,
some changes, modifications and
improvements may not be covered in
this manual. If the operating
characteristics or the appearance of
your machine differs from those
described in this manual, please contact
your STIHL dealer for assistance.

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KB, KW

English

Safety Precautions and
Working Techniques

Because a power tool
power head and shaft
equipped with a Bristle
Brush or PowerSweep
attachment is a powerful
tool, special safety pre­cautions must be
observed to reduce the
risk of personal injury.

It is important that you
read, fully understand
and observe the following
safety precautions and
warnings. Read the
instruction manuals and
the safety precautions of
your basic power tool and
your Bristle Brush or
PowerSweep attachment
periodically. Careless or
improper use may cause
serious or fatal injury.

Have your STIHL dealer show you how
to operate your power tool. Observe all
applicable local safety regulations,
standards and ordinances.

WARNING

As more fully explained later in these
Safety Precautions, to reduce the risk of
personal injury, make sure your unit is
equipped with the proper handle,
harness (if applicable) and deflector for
the type of working tool you are using.
Use only attachments that are
specifically authorized by STIHL for use
on your basic power tool model.

WARNING

Do not lend or rent your power tool
without the instruction manuals of your
basic power tool and your Bristle Brush
or PowerSweep attachment. Be sure
that anyone using it understands the
information contained in these manuals.

WARNING

The use of this machine may be
hazardous. When it comes in contact
with solid foreign objects such as rocks
or bits of metal, it may fling them directly
or by ricochet in the direction of
bystanders or the operator. Striking such
objects could damage the sweeping
attachment. Thrown objects may result
in serious or fatal injury to the operator
or bystanders.

Use your power tool power head and
shaft equipped with the KW
PowerSweep attachment only for
moving wet materials, such as leaves or
dirt, clearing snow and removing
standing water from solid surfaces.

Use your power tool power head and
shaft equipped with the KB Bristle Brush
attachment only for sweeping areas and
paths, including uneven and jointed
surfaces, and natural stone paving.

WARNING

Do not use it for other purposes, since
misuse may result in personal injury or
property damage, including damage to
the machine.

WARNING

Minors should never be allowed to use
this power tool. Bystanders, especially
children, and animals should not be
allowed in the area where it is in use.

WARNING

To reduce the risk of injury to bystanders
and damage to property, never let your
power tool run unattended. When it is
not in use (e.g. during a work break),
shut it off and make sure that
unauthorized persons do not use it.

Most of these safety precautions and
warnings apply to the use of all STIHL
power tools. Different models may have
different parts and controls. See the
appropriate section of your basic power
tool and your Bristle Brush or
PowerSweep attachment instruction
manuals for a description of the controls
and the function of the parts of your
model.

Safe use of a power tool involves

1. the operator

2. the power tool

3. the use of the power tool.

THE OPERATOR

Physical Condition
You must be in good physical condition

and mental health and not under the
influence of any substance (drugs,
alcohol, etc.) which might impair vision,
dexterity or judgment. Do not operate
this machine when you are fatigued.

KB, KW

3

English

WARNING

Be alert – if you get tired, take a break.
Tiredness may result in loss of control.
Working with any power tool can be
strenuous. If you have any condition that
might be aggravated by strenuous work,
check with your doctor before operating
this machine.

Proper Clothing

WARNING

To reduce the risk of injury, the operator
should wear proper protective apparel.

The suitable deflector for your power
tool will not protect the operator from all
foreign objects (gravel, glass, wire, etc.)
thrown back by the rotating attachment.
Thrown objects may also ricochet and
strike the operator.

WARNING

To reduce the risk of
injury to your eyes never
operate your power tool
unless wearing goggles
or properly fitted protec­tive glasses with
adequate top and side
protection complying with
ANSI Z 87.1 (or your
applicable national
standard).

Power tool noise may
damage your hearing.
Wear sound barriers (ear
plugs or ear mufflers) to
protect your hearing.
Continual and regular
users should have their
hearing checked
regularly.

Be particularly alert and cautious when
wearing hearing protection because
your ability to hear warnings (shouts,
alarms, etc.) is restricted.

Always wear gloves
when handling the power
tool. Heavy-duty, nonslip
gloves improve your grip
and help to protect your
hands.

Clothing must be sturdy
and snug-fitting, but allow
complete freedom of
movement. Wear long
pants made of heavy
material to help protect
your legs. Do not wear
shorts, sandals or go
barefoot.

Avoid loose-fitting jackets, scarfs,
neckties, jewelry, flared or cuffed pants,
unconfined long hair or anything that
could become caught on branches,
brush or the moving parts of the unit.
Secure hair so it is above shoulder level.

Good footing is very
important. Wear sturdy
boots with nonslip soles.
Steel-toed safety boots
are recommended.

For further instructions on proper
clothing see the safety precautions in
the instruction manual of the basic
power tool you are using.

THE POWER TOOL

For illustrations and definitions of the
power tool parts see the chapter on
"Main Parts."

WARNING

Never modify this power tool in any way.
Only attachments supplied by STIHL
and expressly approved by STIHL for
use with the specific STIHL basic power
tool model are authorized. Although
certain unauthorized attachments are
useable with STIHL power tools, their
use may, in fact, be extremely
dangerous.

If this tool is subjected to unusually high
loads for which it was not designed (e.g.
heavy impact or a fall), always check
that it is in good condition before
continuing work. Check in particular that
the controls and safety devices are
working properly. Do not continue

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KB, KW

English

operating this machine if it is damaged.
In case of doubt, have it checked by your
STIHL servicing dealer.

THE USE OF THE POWER TOOL

Transporting the Power Tool

WARNING

To reduce the risk of injury from loss of
control and working tool contact, never
carry or transport your power tool with
the working tool moving.

WARNING

Always switch off the engine and make
sure the working tool has stopped before
putting a power tool down.

WARNING

When transporting it in a vehicle,
properly secure it to prevent turnover,
fuel spillage and damage to the unit.

Before Starting

WARNING

Always check your power tool for proper
condition and operation before starting.
Never attempt to modify the controls or
safety devices.

WARNING

Never use a power tool that is damaged
or not properly maintained.

WARNING

Do not attach any sweeping attachment
to a unit without proper installation of all
required parts. Failure to use the proper
parts may cause the working tool to fly
off and seriously injure the operator or
bystanders.

Position the gearbox so that the axle for
sweeping and cleaning attachments is
above the drive shaft.

WARNING

The sweeping attachment must be
properly tightened and in safe operating
condition. Inspect for loose parts (hitch
pins, screws, etc.) and for damaged
parts. Replace damaged parts before
using the power tool.

Keep the handles clean and dry at all
times; it is particularly important to keep
them free of moisture, pitch, oil, fuel mix,
grease or resin in order for you to
maintain a firm grip and properly control
your power tool.

Keep the deflector adjusted properly at
all times (see chapter on "Assembling
the Unit" of your instruction manual).

Adjust carrying harness and hand grip to
suit your size before starting work. The
machine should be properly balanced as
specified in your instruction manual for
proper control and less fatigue in
operation. To be better prepared in case
of an emergency, practice releasing the
unit from the harness as quickly as
possible.

Starting

WARNING

Start the engine at least 10 feet (3 m)
from the fueling spot, outdoors only.

For specific starting instructions, see the
appropriate section of your basic power
tool and your Bristle Brush or
PowerSweep attachment manuals.

Place the power tool on firm ground or
other solid surface in an open area.
Maintain good balance and secure
footing.

If you start the engine the working tool
will rotate when the engine starts – this
may set the sweeping attachment in
motion back towards the operator.

WARNING

To reduce the risk of injury from loss of
control, be absolutely sure that the
working tool is clear of you and all other
obstructions and objects, because when
the engine starts at starting-throttle,
engine speed will be fast enough for the
clutch to engage and move the working
tool.

KB, KW

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English

002BA054 KN

Once the engine has started,
immediately blip the throttle trigger,
which should release the starting throttle
and allow the engine to slow down to
idle.

With the engine running only at idle,
attach the power tool to the spring hook
of your harness if you are using one (see
appropriate chapter of this manual).

WARNING

Your power tool is a one-person
machine. Do not allow other persons in
the general work area, even when
starting.

See also the safety precautions on
Starting in the instruction manual of your
basic power tool.

During Operation
Holding and Controlling the Power Tool

Always hold the unit firmly with both
hands on the handles while you are
working. Wrap your fingers and thumbs
around the handles.

WARNING

To reduce the risk of injury from loss of
control, hold and guide the machine at a
shallow angle. If the machine is held at
too steep an angle, it tends to push back
toward the operator.

WARNING

Never work on steep slopes because of
the risk of injury through loss of control
of the power tool.

KB Bristle Brush

KW PowerSweep

WARNING

Never attempt to operate your power
tool with one hand. Loss of control of the
power tool may result in serious or fatal
injury.

WARNING

Do not overreach. Keep proper footing
and balance at all times. Special care
must be taken in slippery conditions (wet
ground, snow) and in difficult, overgrown
terrain. Watch for hidden obstacles such
as tree stumps, roots and ditches to
avoid stumbling. Be extremely cautious
when working on slopes or uneven
ground.

Operate the power tool only at a normal
walking pace.

Working Conditions
Start and operate your power tool only

outdoors in a well-ventilated area.
Operate it under good visibility and
daylight conditions only. Work carefully.

WARNING

As soon as the engine is
running, this product gen­erates toxic exhaust
fumes containing chemi­cals, such as unburned
hydrocarbons (including
benzene) and carbon
monoxide, that are
known to cause respira­tory problems, cancer,
birth defects, or other
reproductive harm. Some
of the gases (e.g. carbon
monoxide) may be color­less and odorless. To
reduce the risk of serious
or fatal injury/illness from
inhaling toxic fumes,
never run the machine
indoors or in poorly venti­lated locations.

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English

WARNING

Inhalation of certain dusts, especially
organic dusts such as mold or pollen,
can cause susceptible persons to have
an allergic or asthmatic reaction.
Substantial or repeated inhalation of
dust and other airborne contaminants, in
particular those with a smaller particle
size, may cause respiratory or other
illnesses. Control dust at the source
where possible. Use good work
practices, such as operating the unit so
that the wind or operating process
directs any dust raised by the power tool
away from the operator. Follow the
recommendations of EPA / OSHA /
NIOSH and occupational and trade
associations with respect to dust
("particulate matter"). When the
inhalation of dust cannot be
substantially controlled, i.e., kept at or
near the ambient (background) level, the
operator and any bystanders should
wear a respirator approved by NIOSH /
MSHA for the type of dust encountered.

WARNING

Never divert discharge of material
toward bystanders nor allow anyone
near the area of operation. Use care in
directing discharge to avoid damage to
surfaces, automobiles, and the like.

WARNING

Before you start work,
examine the area for
stones, glass, pieces of
metal, rubbish or other
solid objects. Such
objects could be hurled
aside by the sweeping
tool and directly or indi­rectly strike the operator
or bystanders. Such
objects may also damage
the sweeping tool.

WARNING

Static charges may build up when
cleaning synthetic floors – risk of electric
shock and accidents.

WARNING

To reduce the risk of a
dust explosion, spray
very dusty surfaces with
water before sweeping.
Always operate the
power tool in such a way
that the sweeping attach­ment cannot become
jammed or blocked.

WARNING

To reduce the risk of injury, keep hands
and feet away from the sweeping
attachment.

attachments above ground level
because they are more exposed and the
power tool is more difficult to control.

Operating Instructions

WARNING

Do not operate your power tool using the
starting throttle lock, as you do not have
control of the engine speed.

In the event of an emergency, switch off
the engine immediately – move the slide
control / stop switch / momentary stop
switch to 0 or STOP.

See also the safety precautions in the
instruction manual of your basic power
tool on the proper use of the slide control
/ stop switch / momentary stop switch.

WARNING

Never touch a rotating sweeping
attachment with your hand or any part of
your body. The sweeping attachment
continues to rotate for a short period
after the throttle trigger is released
(flywheel effect).

If the sweeping attachment or deflector
becomes clogged or stuck, always
switch off the engine and make sure the
sweeping attachment has stopped
before cleaning. Dirt, grass, weeds, etc.
should be cleaned off the sweeping
attachment as necessary.

KB, KW

WARNING

Use the sweeping attachments at
ground level only. The risk of injury is
increased if you use sweeping

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English

5m (16ft)

The rotating sweeping attachment may
fling foreign objects directly or by
ricochet a great distance. To reduce the
risk of eye and other injury always wear
proper eye protection (see the chapter
on "Proper Clothing") and ensure that
bystanders are at least 16 feet (5 m)
away. To reduce the risk of damage to
property, also maintain this distance
from such objects as vehicles or
windows. Any coworkers who must be in
the restricted area should also wear
goggles or protective glasses.

Stop the engine immediately if you are
approached.

WARNING

During work, check the tightness and the
condition of the sweeping attachment at
regular intervals with the engine and
attachment stopped. If the behavior of
the sweeping attachment changes
during use, stop the engine immediately
and check the attachment for cracks,
wear and damage. Replace cracked or
damaged sweeping attachments
immediately.

WARNING

Do not mount any sweeping attachment
to a machine without proper installation
of all required parts. Never use
unauthorized parts to secure the
sweeping attachments. Failure to use

the proper parts may cause the
attachments to fly off and seriously
injure the operator or bystanders.

MAINTENANCE, REPAIR AND
STORING

WARNING

Always stop the engine and make sure
that the attachment is stopped before
doing any maintenance or repair work or
cleaning the power tool. Do not attempt
any maintenance or repair work not
described in the instruction manuals for
your basic power tool and your Bristle
Brush or PowerSweep attachment.
Have such work performed at your
STIHL servicing dealer only.

WARNING

Use only identical STIHL replacement
parts for maintenance and repair. Use of
non-STIHL parts may cause serious or
fatal injury.

WARNING

Check the condition of the attachment at
regular short intervals. Loose parts
might fly off and injure the operator or
bystanders. To reduce the risk of injury,
always replace sweeping attachments
immediately and in pairs. Do not attempt
to repair or continue using damaged or
worn sweeping attachments.

Tighten all nuts, bolts and screws,
except the carburetor adjustment
screws, after each use.

Do not clean your machine with a
pressure washer. The solid jet of water
may damage parts of the machine.

Store the power tool in a dry and high or
locked location out of reach of children.

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English

Using the Unit

Sweeping Attachments

There are two attachments designed for
sweeping and cleaning operations: KB
bristle brush and KW PowerSweep.

Preparations

If the surface to be cleaned is dry, spray
it with water to reduce the amount of
dust created.

N To reduce the risk of accidents or

injury, remove all obstacles and
objects from the work area.

N Start the engine.
N Put on the shoulder strap.

The basic power tool with sweeping
attachment is operated in the forward
direction.

Working Technique

Bristle Brush

The KB bristle brush is used for cleaning
areas and paths, including uneven and
jointed surfaces, and natural stone
paving.

WARNING

To reduce the risk of injury, never work
without the deflector and two
extensions.

These devices divert material away from
the machine and the operator.

N Push the bristle brush steadily at

walking pace.

KB, KW

N Always hold and guide the tool at a

shallow angle.

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English

479BA017 KN

1

479BA017 KN

1

WARNING

The steeper the angle shown above, the
more difficult it is to control the tool.

N Guide the bristle brush at right

angles to the direction of travel (1).
Sweepings are thrown forwards,
ahead of the operator.

WARNING

The bristle brush pushes back towards
the operator.

PowerSweep

The KW PowerSweep is used for
sweeping areas and paths, moving wet
materials, such a leaves or dirt, to a
central point, clearing snow and
removing standing water from solid
surfaces.

N Push the PowerSweep steadily at

walking pace.

N Always hold and guide the tool at a

shallow angle.

WARNING

The steeper the angle shown above, the
more difficult it is to control the tool.

N Guide the PowerSweep at right

angles to the direction of travel (1).
Sweepings are thrown forwards,
ahead of the operator.

WARNING

The PowerSweep pushes back towards
the operator.

Cleaning the Sweeping Attachment

Clean away any dirt and debris that has
accumulated between the sweeping
attachments, around the gearbox or
between the sweeping attachments and
the deflector:

– Shut off the engine.
– Pull the hitch pins out of the axle.
– Remove the sweeping attachments

from the axle and clean them.

– Clean away dirt and debris from the

machine.

Refer to "Replacing the Sweeping
Attachments" for mounting instructions.

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English

Approved Basic Power Tools

Operation of this interchangeable
attachment is permitted only with the
following basic power tools:

STIHL FC 83, FC 85, FC 95, FC 110
STIHL FH 75
STIHLFS83R, FS85R

FS 110 R2), FS 130 R
STIHLHL73

2)

, HL 752), HL 100

STIHL KW 85

WARNING

This interchangeable attachment may
only be operated on a basic power tool
with a loop handle – see "Retrofitting a
Loop Handle". The loop handle need
not be equipped with a barrier bar.

WARNING

Other combinations of the attachment
and non-approved basic power tools are
not permitted since they may result in
accidents or serious personal injury.

1) 2)

, FS 90 R,

2)

STIHL HL 73, HL 75 and HL 100 in the
versions with a 0°-gearbox.

To retrofit the loop handle see chapter
on "Mounting the Loop Handle".

Mounting the Attachment

Preparations

WARNING

To reduce the risk of injury, always shut
off the engine before converting the
basic power tool.

NOTICE
Make sure the work area is clean before

mounting or removing the attachment.
Remove any existing gearhead or

interchangeable attachment from the
basic power tool.

Retrofitting a Loop Handle

The following models must be retrofitted
with a loop handle:

1)

Not approved for FS 85 R with
serial numbers from 2 49 848 196
up to 2 53 552 82

2)

Not approved for bike-handled
models or models FS 85 RX,
FS110RX, HL73K, HL75K and
HL 100 K

KB, KW

11

English

228BA048 KN

FCS

HL/FH

BF

HT

KB/KW

FS

381BA015 KN

L

3

1

1

2

509BA009 KN

N To do this, loosen the clamp screws

on the gearhead (arrows) and pull
the gearhead off the drive tube.

The drive shaft may slip out of the tube
in this process. If this happens, push the
drive shaft back into the tube.

The drive shaft must not project from the
tube more than L = 22 mm (7/8 in). If this
dimension is not correct, apply slight
pressure to the drive shaft and rotate it
slowly at the same time until it can be
pushed in to the required length.

Mounting the Deflector

N Apply a mark (with pencil or felt-tip

pen) at distance A (125 mm/5 in)
from the end of the drive tube.

N Remove the protective caps from

the ends of the tube and keep them
in a safe place.

N Loosen the clamp screws (1).
N Push the deflector (2) onto the drive

tube (3) and beyond the mark
(arrow). Then pull the deflector back
until it is flush with or just covers the
mark (arrow).

N Position the deflector so that the

machine support on the engine
faces down and the deflector is
horizontal.

N Tighten down the clamp screws (1)

firmly.

WARNING

Check that the deflector is secure – it
must not be possible to rotate it on the
drive tube.

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English

3

479BA021 KN

4

3

479BA019 KN

5

5

6

002BA142 KN

1

2

1

Mounting the Gearbox

N Remove both sweeping

attachments – see "Replacing the
Sweeping Attachments".

N Push the sleeve (4) onto the drive

tube (3) as far as stop.

N Loosen the clamp screws (5) – do

not remove them.

N Push the gearbox (6) onto the drive

tube (3), turn the gearbox back and
forth as necessary.

Aligning the Gearbox

N Line up the gearbox on the drive

tube so that the distance between
the horizontal axles (7) and the
deflector is the same at both sides.

N Tighten down the clamp screws

firmly.

WARNING

It must not be possible to rotate the
gearbox on the drive tube.

N Mount the two sweeping

attachments – see "Replacing the
Sweeping Attachments".

Fitting the Carrying Ring

Not all basic power tools are equipped
with a carrying ring.

The carrying ring is available as a
special accessory.

The type of carrying ring depends on the
market and the basic power tool.

For position of carrying ring see
"Mounting the Loop Handle".

N Place the clamp (1) against the

drive tube with the tapped hole on
the left (viewed from engine).

N Squeeze the two ends of the clamp

together and hold in that position.

N Insert the M6x14 screw (2).
N Line up the carrying ring.
N Tighten down the screw firmly.

KB, KW

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English

2

1

002BA184 KN

A

4

3

1

6

002BA157 KN

10

7

10

5

9
8

9
8

002BA183 KN

1

A

Mounting the Loop Handle

Position of Loop Handle

A loop handle (1) may already be
mounted to the basic power tool.

N Secure the loop handle (1) at

distance A = about 20 cm (8 in) in
front of the control handle (2) – if the
sleeve (3) and carrying ring (4) are
already fitted, they must be between
the loop handle and control handle.

Mounting the Loop Handle

N Place the clamp (5) in the loop

handle (1) and position them both
against the drive tube (6).

N Place the clamp (7) against the

drive tube.

N Line up the holes.
N Fit the washers (8) on the

screws (9), and insert the screw in
the holes.

N Turn the square nuts (10) as far as

stop.

Adjusting the Loop Handle

N Align the loop handle (1) and move

it to the most comfortable position.

Distance A must not be more than
55 cm (22 in).

Recommendation: distance A:
about 35 cm (14 in)

N Tighten down the screws on the

loop handle.

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KB, KW