Limpar WD 70 User manual

Operating Manual
Language of the original operating manual: German Keep on hand for further use!
4F Maschinentechnik GmbH
Am Gasspeicher 6, 49453 Rehden, Germany
Tel.: [phone], Fax: [phone]
Email: [email protected], Internet: www.4-f.de
© 4F Maschinentechnik GmbH
4KM
-
WD
-
A2
Weed Brush Limpar WD 70

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Introduction
Dear reader,
This operating manual provides all information for safe
operation of the Weed Brush WD 70.
This machine has been designed and built in accordance with
the state of the art and recognised safety rules and regulations.
Nevertheless dangers for personnel or objects can occur,
because not all danger zones can be avoided if the functionality
is to remain intact. However you can prevent accidents due to
these dangers by complying with the instructions in this
operating manual. Moreover you will then be able to use this
weed brush to its full capacity and avoid unnecessary
disturbances.
CAUTION!
There is danger of injury and danger of material damage when
assembling, operating, and maintaining the weed brush.
Therefore:
•First read this operating manual carefully, prior to assembly
and operation of the weed brush. Always comply with the
instructions and information contained herein, particularly the
safety instructions.
• If the operating manual is lost or in poor condition, request a
new copy from the manufacturer (the same applies for parts
of the operating manual).
This operating manual only applies for the machine specified on
the cover sheet and at the end of every page. Compare this
information with the information on the rating plate of the weed
brush.
After you have read the entire operating manual thoroughly for
the first time, take good care of the operating manual over the
entire service life of the weed brush, so that you can look up
something later.
If you sell the weed brush, give this operating manual to the
new owner.
All information, illustrations and dimensions in this operating
manual are non-binding. No claims whatsoever can be derived
from this information, illustrations or dimensions.
Introduc
tion

Weed Brush WD 70 6.4.2017 Page3 of 33
Reprinting or duplication of any type, including excerpts,
requires the written permission of the manufacturer.
Conversion of, or changes to the weed brush are only permitted
with the manufacturer's written consent. Unauthorised
conversion voids any liability on the part of the manufacturer, as
well as the guarantee.
Only use original spare parts and accessories that are
approved by the manufacturer. Otherwise the design-specified
characteristics of the machine, the functionality or the safety
can be impaired. Consequently the use of other parts voids the
liability for the ensuing consequences.
Contact your specialist dealer to order spare parts or
accessories.
In addition comply with the instructions in the operating manual
of the petrol motor manufacturer.
4F Maschinentechnik GmbH assumes no liability for the content
of the operating manual provided by the manufacturer of the
petrol motor.
Explanation of symbols, signs and direction indications
For better understanding, the following conventions are used for
this operating manual:
1.
To emphasise important information, the following types of
special notices are used:
DANGER!
•There is an imminent dangerous situation that results in death
or serious injury if it is not avoided.
WARNING!
•There is a possible dangerous situation that can result in
death or serious injury if it is not avoided.
Introduc
tion
Introduc
tion

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CAUTION!
•
There is a possible dangerous situation that can result in
minor injury or material damage, if it is not avoided.
ATTENTION!
...indicates a possible dangerous situation that can result in
material damage, if it is not avoided.
NOTE
...indicates
useful tips and recommendations, as well as
information for efficient and trouble-free operation.
...refers to impor
tant information in other sections and
documents.
2.
Some texts serve a particular purpose. These texts are marked
as follows:
•Listings.
Instructing text, e.g. a sequence of activities.
3.
In the text the sides of the machine are cited (left, right, front,
rear). Left or right refers to the side that the operator of the
machine sees viewed from the direction of travel. The work
brush of the machine is mounted in front, the handlebar is
mounted in the rear.

Weed Brush WD 70 6.4.2017 Page5 of 33
Table of contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 Intended use . . . . . . . . . . . . . . . . . 7
1.2 Non-intended use . . . . . . . . . . . . . . . . . . 8
1.3 Product observation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4 Requirement imposed on the operator or personnel . . . 9
1.5 Danger zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.6 Work clothing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.7 Safety devices and protective devices . . . . . . . . . . . . . . .11
1.8 Safety regulations and accident prevention regulations . . . . . . . . 12
1.9 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.10 Safety signs . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.1 Rating plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.3 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
3.1 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
3.2 Adjusting the handlebar height . . . . . . . . . . . . . . . . . . . . . . . . . .
18
3.3 Mounting the braided wire brush elements . . . . . . . . . . . . . . . 19
Table of contents

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Table of contents
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.1 Preparatory activities . . . . . . . . . . . . . . . . . . . . . . 22
4.2 Sweeping operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 23
5 Maintenance and repair . . . . . . . . . . . . . . . . . . . . . 27
5.1 Safety guidelines for maintenance & Repair. . . . .. . . . . 27
5.2 Regular maintenance tasks . . . . . . . . . . . . . . . . . 28
5.3 Maintenance and repair verifications . . . . . . . . 31
6 Decommissioning and preservation . . . . . . . . . . . . . 32
7 Faults & fault rectification . . . . . . . . . . . . . . . . . 32
8 Specialist dealer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
9 Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . 33
Table of contents

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1 Safety
The basic prerequisite for safe and trouble-free operation of the
weed brush is knowledge of the safety instructions and safety
regulations.
Consequently read this section carefully all the way through
before operating the weed brush, and comply with the specified
instructions and warnings. The safety instructions and warnings
that you find at the appropriate point in the text of the following
sections must be complied with. The manufacturer cannot be
made liable if the instructions and warnings are not complied
with.
In addition to the instructions contained in this operating
manual, the statutory regulations, particularly the safety and
accident prevention regulations, must also be complied with.
1.1 Intended use
The Weed Brush WD 70 may only be used to clean paths and
surfaces that are paved with concrete, asphalt, paving stones or
slabs outside of closed rooms.
Intended use also includes compliance with all the instructions
in the operating manual.
DANGER!
If the weed brush is used for a use other than the use described
above, dangerous situations can occur for people or material
damage can occur.
Therefore:
•Only use the machine for its intended purpose.
•Always comply with all the instructions in this operating
manual.
•Particularly refrain from the uses of the weed brush listed in
section 1.2. They are considered non-intended use.
Safety

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1.2 Non-intended use
Any use that deviates from that described in section 1.1, is
considered non-intended use.
For example, non-intended use of the weed brush occurs
when
•it is used to clean unpaved surfaces e.g. gravel paths,
•It is used with non-approved braided brushes
•it is used in enclosed spaces, e.g. halls, or barns,
•It is manoeuvred or transported with the combustion motor
switched on or with the brushes rotating
•it is operated in faulty condition or with safety-relevant
faults,
•it is used without the safety cladding elements that are
installed as standard equipment,
•unsuitable personnel are assigned to operate the weed
brush.
•It is made heavier to increase the braided brush pressure
1.3 Product observation
Notify us without delay if faults or problems occur when
operating your weed brush, or if accidents occur or nearly
occur.
Together with you we will find a solution to the problem and
allow the knowledge gained to flow into our subsequent work.
Safety

Weed Brush WD 70 6.4.2017 Page9 of 33
1.4 Requirements imposed on personnel
Handling the weed brush is only permitted for persons,
•who are at least 16 years old,
•who are physically and mentally suited to do so,
•who have read and understood this operating manual,
and
•from whom it is expected that they responsibly perform
the tasks assigned to them.
Commissioning, maintenance, repair and disposal of the
weed brush may only be executed by a specialist workshop
or by persons with appropriate technical training and
experience.
1.5 Danger zone
The danger zone is the area in which the safety or the
health of persons is jeopardised. Consequently no one
should be in this area when the weed brush is in operation.
WARNING!
For persons in the danger zone there is danger of injury
due to rocks or other foreign objects, or parts of the brush
that are thrown upwards by the machine
Therefore:
•Only operate the weed brush if no one is in the danger
zone.
• Carefully observe the danger zone and stop the weed
brush if persons enter the danger zone.
• Before starting to work with the machine, foreign objects
must be removed from the area that will be processed.
When working with the machine, look for other foreign
objects and remove them in good time.
The danger zone is shown in the sketch (see Fig. 1, on the
next page):
Safety

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A top view of the weed brush is shown. The shaded area is
the danger zone.
NOTE
When swinging the weed brush to the right or left this change in
direction also applies for the danger zone.
Safety
1 m4 m
5 m
Fig. 1: Danger zone

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1.6 Work clothing
WARNING!
Unsuitable, loose work clothing, bandannas, ties, and scarves
could be caught by the weed brush and pulled in.
Severe injuries would be the result.
Therefore:
• When operating the weed brush, and for maintenance and
repair tasks, always wear suitable tight-fitting work clothing.
• Because the possibility of rocks, or other objects, or ground
particles (e.g. due to bouncing of walls) being thrown as far
as the operator station or even further cannot be completely
excluded, it is necessary to wear protective equipment:
Long sturdy trousers, sturdy shoes, particularly protective
goggles and protective gloves.
1.7 Safety devices and protective devices
1.7.1 Safety switch (see Fig. 3)
The switch lever on the left hand grip is designed as a dead
man's switch. After pressing the switch lever against the
handlebar, it is possible to start the motor. As soon as the
motor starts up the brush head also starts to rotate. The brush
cannot be switched separately.
To bring the weed brush to a standstill, simply release the
switch lever.
1.7.2 Splash guard and brush cover (see Fig. 3)
The splash guard reduces the danger zone. It must only be
used for maintenance or repair tasks.
1.7.3 V-belt guard (see Fig. 3)
The belt drive in the interior of the weed brush is considered a
danger zone and is protected against access by the front
protective cover and the housing.
Safety

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1.8 Safety regulations and accident
prevention regulations
Comply with the following instructions to avoid injury and
material damage. In addition, for commercial use comply with
the safety and accident prevention regulations issued by the
Employers Liability Insurance Associations.
•Only operate the weed brush with properly mounted safety
devices and protective devices (see section 1.7). These
devices may only be dismounted for maintenance and
repair tasks. After concluding these tasks the safety
devices and protective devices must be immediately
remounted. Otherwise there is significant danger of injury.
•Only use the weed brush for its intended use, otherwise
dangerous situations can occur with serious or fatal injuries
as the result (intended use: see section 1.1).
•Due to poor lighting conditions during operation a number
of dangers can occur. Only operate the weed brush if there
are adequate light conditions at the implementation site.
•Guide the weed brush at a very slow walking pace (max.
1.2 km/h).
•The motor must be switched off before you refuel the
machine of leave the machine.
•For tasks along walls of hedges there is danger of hand
abrasion injuries. Position the handlebar diagonally so that
with the left handlebar grip you maintain an adequate
distance to the wall or hedge.
•Maintenance and repair tasks may only be executed by the
specialist dealer or by specialised personnel.
•High voltage on the ignition cable and spark plug
connector! Always switch the weed brush off with the motor
switch lever, before performing tasks on the ignition cable
or spark plug connector. (Also comply with the instructions
provided by the motor manufacturer).
•Comply with the instructions on the safety stickers that are
located on the weed brush. Safety stickers must not be
removed. If they have become illegible or have been lost,
they must be replaced (meaning of the stickers: see section
1.10). Contact your specialist dealer to order new stickers.
•Wear tight-fitting clothing. Long hair must be tied back.
Safety
Safety

Weed Brush WD 70 6.4.2017 Page13 of 33
•Do not operate the weed brush in faulty condition; significant
injury hazards can occur. If faults occur switch off the weed
brush and initiate the repair.
•Switch off the weed brush prior to performing repair tasks,
including cleaning tasks. Ensure that no other person can
restart the weed brush (e.g. pull off the spark plug
connector). Otherwise there is danger of injury.
•Only use original spare parts and accessories that are
approved by the manufacturer. The use of other parts voids
the liability for the ensuing consequences.
•Execution of the specified maintenance and repair tasks is
part of intended use of the weed brush; intended use
particularly includes compliance with the maintenance
intervals. If you do not execute these tasks, faultless function
cannot be ensured. Dangers for personnel and objects can
occur. We recommend that you keep maintenance logs.
1.9 Disposal
After its service life, only have qualified specialists dispose of the
weed brush. The manufacturer assumes no liability for damage
that occurs due to improper disposal.

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1.10 Safety signs on the weed brush
WARNING!
Danger of injury due to ignorance of the danger zones.
The stickers attached on the weed brush contain warnings of
specific dangers as well as instructions for correct operation. The
stickers supplement the instructions specified in this manual.
Therefore:
•Always comply with the warnings affixed on the weed brush.
•Do not remove any warning stickers
•Replace warning stickers that come off of the machine or that
have already been lost.
Stickers Meaning
Before using the weed brush, the operating
manual must be read. All information
contained in the operating manual must
always be complied with.
Position: On the rear of the machine in the
operator’s field of vision.
Warning - general dangers.
Position: On the rear of the machine in the
operator’s field of vision.
Warning - hot surface.
Position: On the motor.
Warning - tossed-up sweepings.
Maintain distance.
Position: On the left side of the brush deck
Safety

Weed Brush WD 70 6.4.2017 Page15 of 33
2 Description
With the Weed Brush WD 70 weeds are removed with motor
power from paved surfaces outside of enclosed spaces.
The weed brush consists of a sheet steel housing, on which a
petrol motor is mounted. The drives a plate with 8 adjustable
and replaceable braided steel wire elements.
The weed brush has a handlebar with which it is guided by a
pedestrian, and from which it is placed in operation. This
machine does not have a drive mechanism.
2.1 Rating plate
A rating plate is attached on the machine, it contains the basic
data for the machine (see Fig. 2). The rating plate is on the left
side of the weed brush below the motor.
Wear protective goggles!
Position: On the rear of the machine in
the operator’s field of vision.
Fig. 2: Rating plate
Description

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2.2 Overview
Description
Fig. 3: Components and operating elements
Carriage for braided
wire brush
Lever for handlebar lateral
adjustment element
Lever for handlebar
height adjustment
element
Handle for
inclined position of
the machine
Splash guard Braided wire brush
element
Brush arm
Handle
Operating On/Off switch
(Dead man's switch)
Motor switch lever
Front = motor stop
Rear = motor can run
(The motor has start
automation and does not
need a choke!
After the engine starts up
there is only the work speed
of 3000 rpm.)
V-belt guard
Brush cover
Manual
starter

Weed Brush WD 70 6.4.2017 Page17 of 33
2.3 Technical data
Dimensions, weight, motors
Work width 70 cm
Weight 79 kg
Motor B&S 950 E
Hand/arm vibrations on the weed brush
Total oscillation value a
hwd
= 5.3 m
-2
Noise emission value of the weed brush
Sound power level L
WAd
= 97 dB(A)/1 pW
Sound pressure level at the operator's
ear L
pAd
= 88 dB(A)/20 µPa
Technical data

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3 Commissioning
CAUTION!
Danger of injury and danger of material damage due to
improper assembly of the weed brush.
Therefore:
•The completion and all necessary adjustments, incl. trial
run, are included in the scope of delivery and must be
executed by the specialist dealer prior to transfer to the
customer!
3.1 Unpacking
Place the packed machine on level ground
Open the box on the top
Cut open the corners of the box to the floor.
Set up the handlebar in accordance with section 3.2 and
roll the weed brush away from the packaging.
Dispose of the packaging in accordance with the waste
disposal regulations issued by your municipal
administration.
3.2 Adjusting the handlebar
See Fig. 3 for adjustment of the handlebar
CAUTION!
Danger of injury and danger of material damage when
raising the steering arm.
When lifting up the steering arm there is a crush hazard
between steering arm and motor.
Therefore:
•Carefully lift up the steering arm.
•When lifting up the steering arm pay attention to the
cable on the left handlebar.
Pull back the lever of the steering arm height adjustment
until the steering arm can be moved.
Swing the handlebar into operating position.
Push the lever for the handlebar adjustment mechanism
forward until the handlebar is locked in place.
The lever for the steering arm height-adjustment should be
forward approx. 30°when the handlebar is fixed in place. It
should not touch the motor under any circumstances.
With the lever released, the "fixed in place" position can be
set with the wing nut underneath the clamp foot.
Commissioning

Weed Brush WD 70 6.4.2017 Page19 of 33
3.3 Mounting the braided wire
To prevent the braided wire brush elements from bending
during shipment or storage, they are packed separately
and provided with the new machine must be mounted as
part of the commissioning process.
CAUTION!
Danger of injury when mounting the braided wire brush
elements due to pricking through the steel rope wires
and/or pinching of fingers on the tubular hinged linch pins.
Therefore:
•Wear robust leather gloves for mounting.
Have a second person help to push the machine
downward with the handlebar far enough that the brush
arms are approximately 10 cm away from the ground.
Open and remove the tubular hinged linch pin from a red
braided wire brush element carriage.
As shown in Fig. 4, guide the end of the braided wire
brush element through the catch eye on the end of a
brush arm.
Then tilt the red braided wire brush element carriage, in
this process the clamp screw points to the outside.
Now insert the pin of the tubular hinged linch pin through
the aligned bores of carriage and brush arm. Select the
top-most mounting possibility.
Close the bracket of the tubular hinged linch pin so that it
encircles the support
arm from the inside.
Fig. 4: Mounting the braided wire brush element
The braided wire brush elements should not project more than approx.
7 cm beyond the end of the brush arm, otherwise the effectiveness of
the brush is impaired.
Commissioning

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4 Operation
WARNING!
Danger of injury when operating the weed brush.
Tossed-up objects can hit and injure persons who are in the
danger zone.
Therefore:
•Ensure that no one is in the danger zone (see Fig. 1).
•Always observe the danger zone when working with the
weed brush.
•Carefully observe the danger zone and stop brush
rotation if persons enter the danger zone.
•The user is responsible relative to third persons who are
in the work area (entire area that will be processed).
Prior to operation always read the instructions in the Safety
chapter (see chapter 1)!
DANGER!
Life-threatening danger due to movements of the weed brush.
When operating the weed brush on slopes, the weed brush can
start moving without control, due to gravity.
Therefore:
•For tasks on sloping terrain always bear in mind that there is a
possibility of the machine rolling off.
•If possible, guide the weed brush on slopes transverse to the
direction of the slope.
•Do not use the weed brush on terrain with a slope of more
than 37% (20 degrees).
Operation
Operation