IEC 62841-4-7:2022

IEC 62841-4-7 ®
Edition 1.0 2022-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety –
Part 4-7: Particular requirements for pedestrian controlled walk-behind lawn
scarifiers and aerators
Outils électroportatifs à moteur, outils portables et machines pour jardins et
pelouses – Sécurité –
Partie 4-7: Exigences particulières pour les scarificateurs à gazon et les
aérateurs de gazon à conducteur à pied

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et
les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always have
committee, …). It also gives information on projects, replaced access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 300 terminological entries in English
details all new publications released. Available online and once
and French, with equivalent terms in 19 additional languages.
a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or need
further assistance, please contact the Customer Service
Centre: sales@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Recherche de publications IEC - Découvrez notre puissant moteur de recherche et consultez
webstore.iec.ch/advsearchform gratuitement tous les aperçus des publications. Avec un
La recherche avancée permet de trouver des publications IEC abonnement, vous aurez toujours accès à un contenu à jour
en utilisant différents critères (numéro de référence, texte, adapté à vos besoins.
comité d’études, …). Elle donne aussi des informations sur les
projets et les publications remplacées ou retirées. Electropedia - www.electropedia.org

Le premier dictionnaire d'électrotechnologie en ligne au monde,
IEC Just Published - webstore.iec.ch/justpublished
avec plus de 22 300 articles terminologiques en anglais et en
Restez informé sur les nouvelles publications IEC. Just
français, ainsi que les termes équivalents dans 19 langues
Published détaille les nouvelles publications parues.
additionnelles. Egalement appelé Vocabulaire
Disponible en ligne et une fois par mois par email.
Electrotechnique International (IEV) en ligne.

Service Clients - webstore.iec.ch/csc
Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
sales@iec.ch.
IEC Products & Services Portal - products.iec.ch

IEC 62841-4-7 ®
Edition 1.0 2022-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and

garden machinery – Safety –
Part 4-7: Particular requirements for pedestrian controlled walk-behind lawn

scarifiers and aerators
Outils électroportatifs à moteur, outils portables et machines pour jardins et

pelouses – Sécurité –
Partie 4-7: Exigences particulières pour les scarificateurs à gazon et les

aérateurs de gazon à conducteur à pied

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.140.30 ISBN 978-2-8322-3961-2

– 2 – IEC 62841-4-7:2022 © IEC 2022
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 General requirements . 12
5 General conditions for the tests . 12
6 Radiation, toxicity and similar hazards . 12
7 Classification . 12
8 Marking and instructions . 13
9 Protection against access to live parts . 16
10 Starting . 16
11 Input and current . 17
12 Heating . 17
13 Resistance to heat and fire . 17
14 Moisture resistance . 17
15 Resistance to rusting . 18
16 Overload protection of transformers and associated circuits . 19
17 Endurance . 19
18 Abnormal operation . 19
19 Mechanical hazards . 20
20 Mechanical strength . 33
21 Construction . 34
22 Internal wiring . 38
23 Components . 38
24 Supply connection and external flexible cords . 40
25 Terminals for external conductors . 42
26 Provision for earthing . 42
27 Screws and connections . 42
28 Creepage distances, clearances and distances through insulation . 42
Annexes . 47
Annex I (informative) Measurement of noise and vibration emissions . 47
Annex K (normative) Battery tools and battery packs . 56
Annex L (normative) Battery tools and battery packs provided with mains connection
or non-isolated sources . 71
Annex AA (normative) Product safety labels . 75
Annex BB (normative) Test surface . 80
Annex CC (normative) Lawn scarifier and lawn aerator foot protection test . 82
Annex DD (normative) Lawn scarifier and lawn aerator tines stopping time test . 85
Annex EE (informative) Example of a material and construction for fulfilling the
requirements for an artificial surface . 87
Bibliography . 89

Figure 101 – Example of a lawn scarifier or a lawn aerator . 11
Figure 102 – Operator control zones . 23
Figure 103 – Safety distances – single-axle machines . 25
Figure 104 – Handle distance – machines with more than one axle . 26
Figure 105 – Guarding of lawn scarifier and lawn aerator tines, general . 27
Figure 106 – Guarding of lawn scarifier and lawn aerator tines, side coverage . 28
Figure 107 – Guarding of lawn scarifier and lawn aerator tines, rear discharge . 29
Figure 108 – Guarding of lawn scarifier and lawn aerator tines, front discharge . 30
Figure 109 – Thrown object test rig for rear discharge lawn scarifiers and lawn aerators . 32
Figure 110 – Strength of tines assembly . 34
Figure 111 – Impact test fixture for handle insulation . 36
Figure 112 – Test assembly for accessibility of attachment plug blades . 41
Figure I.101 – Microphone positions on the hemisphere (see Table I.101) . 47
Figure I.102 – Examples of positions of transducers for lawn scarifiers and lawn
aerators . 54
Figure K.301 – Examples of separable battery pack connection points and direction of

applied force . 65
Figure AA.1 – Product safety labels illustrating – "WARNING – Beware of thrown
objects – keep bystanders away" . 75
Figure AA.2 – Product safety label illustrating – "WARNING – Keep hands and feet
away from the tines" . 76
Figure AA.3 – Product safety labels illustrating – "WARNING – Remove plug from

mains before maintenance or if cord is damaged" . 76
Figure AA.4 – Product safety label illustrating – "WARNING – Keep the supply cord
away from the tines" . 77
Figure AA.5 – Product safety labels illustrating – "WARNING – Disconnect battery
before maintenance" . 77
Figure AA.6 – Product safety labels illustrating – "WARNING – Remove the disabling

device before maintenance" . 78
Figure AA.7 – Product safety labels illustrating – "WARNING – Activate the disabling
device before maintenance" . 79
Figure BB.1 – Test surface detail . 80
Figure BB.2 – Example of test surface, nail plan . 81
Figure CC.1 – Foot probe . 82
Figure CC.2 – Area to be probed for lawn scarifiers and lawn aerators . 84
Figure EE.1 – Sketch of the measurement surface covered with an artificial surface . 88

Table 4 – Required performance levels . 20
Table 9 – Pull and torque value . 42
Table 12 – Minimum creepage distances and clearances . 44
Table I.101 – Co-ordinates of microphone positions . 50
Table I.102 – Values of the constant a . 50
Table I.103 – Absorption coefficients . 50
Table 4 – Required performance levels . 61
Table K.301 – Pull and torque value . 67

– 4 – IEC 62841-4-7:2022 © IEC 2022
Table K.1 – Minimum creepage distances and clearances between parts of different
potential . 69
Table K.2 – Minimum total sum of creepage distances and clearances to accessible

surfaces . 70

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS,
TRANSPORTABLE TOOLS AND LAWN AND GARDEN
MACHINERY – SAFETY –
Part 4-7: Particular requirements for pedestrian controlled
walk-behind lawn scarifiers and aerators

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 62841-4-7 has been prepared by IEC technical committee 116: Safety of motor-operated
electric tools. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
116/589/FDIS 116/621/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.

– 6 – IEC 62841-4-7:2022 © IEC 2022
This document is to be used in conjunction with the first edition of IEC 62841-1 (2014).
This document supplements or modifies the corresponding clauses in IEC 62841-1, so as to
convert it into the IEC Standard: Particular requirements for pedestrian controlled walk-behind
lawn scarifiers and aerators.
Where a particular subclause of IEC 62841-1 is not mentioned in this document, that subclause
applies as far as reasonable. Where this document states "addition", "modification" or
"replacement", the relevant text in IEC 62841-1 is to be adapted accordingly.
The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.
The terms defined in Clause 3 are printed in bold typeface.
Subclauses, notes, tables and figures which are additional to those in IEC 62841-1 are
numbered starting from 101.
Subclauses, notes, tables and figures in Annex K and Annex L which are additional to those in
the main body of this document are numbered starting from 301.
A list of all parts in the IEC 62841 series, published under the general title Electric motor-
operated hand-held tools, transportable tools and lawn and garden machinery – Safety, can be
found on the IEC website.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
NOTE The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations may need a transitional period following publication of a new, amended or revised IEC publication in
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
It is the recommendation of the committee that the content of this publication be adopted for implementation nationally
not earlier than 36 months from the date of publication.

INTRODUCTION
The International Electrotechnical Commission (IEC) draws attention to the fact that it is claimed
that compliance with this document may involve the use of a patent. IEC takes no position
concerning the evidence, validity, and scope of this patent right.
The holder of this patent right has assured IEC that s/he is willing to negotiate licences under
reasonable and non-discriminatory terms and conditions with applicants throughout the world.
In this respect, the statement of the holder of this patent right is registered with IEC. Information
may be obtained from the patent database available at http://patents.iec.ch.
Attention is drawn to the possibility that some of the elements of this document may be the
subject of patent rights other than those in the patent database. IEC shall not be held
responsible for identifying any or all such patent rights.

– 8 – IEC 62841-4-7:2022 © IEC 2022
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS,
TRANSPORTABLE TOOLS AND LAWN AND GARDEN
MACHINERY – SAFETY –
Part 4-7: Particular requirements for pedestrian controlled
walk-behind lawn scarifiers and aerators

1 Scope
IEC 62841-1:2014, Clause 1 is applicable, except as follows:
Addition:
This document applies to pedestrian controlled walk-behind lawn scarifiers and lawn aerators
which are designed for regenerating lawns by combing out materials such as grass, thatch and
moss or cutting vertically into the lawn face using
– metallic tines; and/or
– rigid non-metallic tines
which rotate about a horizontal axis.
This document does not apply to
– pedestrian controlled walk-behind lawnmowers;
– towed/semi-mounted lawn scarifiers and lawn aerators;
– ride-on machines;
– non-powered lawn scarifiers and lawn aerators;
– combustion engine powered lawn scarifiers and lawn aerators;
– plug aerators (corers);
– hybrid and fuel cell powered machines and associated charging systems; and
– garden tractors or their attachments.
NOTE 101 Pedestrian controlled walk-behind lawnmowers are covered by IEC 62841-4-3.
2 Normative references
IEC 62841-1:2014, Clause 2 is applicable, except as follows:
Addition:
IEC 60664-3:2016, Insulation coordination for equipment within low-voltage systems – Part 3:
Use of coating, potting or moulding for protection against pollution
IEC 60664-4:2005, Insulation coordination for equipment within low-voltage systems – Part 4:
Consideration of high-frequency voltage stress
IEC 61058-2-6:2018, Switches for appliances – Part 2-6: Particular requirements for switches
used in electric motor-operated hand-held tools, transportable tools and lawn and garden
machinery
IEC 61672-1:2013, Electroacoustics – Sound level meters – Part 1: Specifications
IEC 62841-1:2014, Electric motor-operated hand-held tools, transportable tools and lawn and
garden machinery – Safety – Part 1: General requirements
ISO 354:2003, Acoustics – Measurement of sound absorption in a reverberation room
ISO 2758:2014, Paper – Determination of bursting strength
ISO 13857:2019, Safety of machinery – Safety distances to prevent hazard zones being
reached by upper and lower limbs
Replacement:
IEC 61058-1:2016, Switches for appliances – Part 1: General requirements
ISO 3744:2010, Acoustics – Determination of sound power levels and sound energy levels of
noise sources using sound pressure – Engineering methods for an essentially free field over a
reflecting plane
ISO 11201:2010, Acoustics – Noise emitted by machinery and equipment – Determination of
emission sound pressure levels at a work station and at other specified positions in an
essentially free field over a reflecting plane with negligible environmental corrections
3 Terms and definitions
IEC 62841-1:2014, Clause 3 is applicable, except as follows:
Addition:
3.101
catcher
part or combination of parts, intended to be used with the lawn scarifier or lawn aerator, which
provides a means for collecting material such as grass, thatch, moss or other debris
3.102
cutting width
total width of scarification/aeration measured across the tines at 90° to the direction of travel
3.103
discharge chute
extension of the tines enclosure from the discharge opening, generally used to control the
discharge of material from the tines
3.104
discharge opening
gap or opening in the tines enclosure through which grass, thatch, moss and other debris may
be discharged
3.104.1
front discharge
discharge opening for throwing out grass, thatch and moss so that they will be collected in a
catcher which is located in front of the tines

– 10 – IEC 62841-4-7:2022 © IEC 2022
3.104.2
rear discharge
discharge opening for throwing out grass, thatch and moss so that they will be collected in a
catcher which is located behind the tines
3.105
lawn aerator
machine equipped with a tines assembly which uses the ground to determine the depth of cut,
designed for penetrating the lawn surface
Note 101 to entry: See Figure 101.
Note 102 to entry: Lawn aerators that are designed to only make shallow cuts or slices in the soil are also known
as verticutters.
3.106
lawn scarifier
machine equipped with a tines assembly designed to scratch the surface or earth face
Note 101 to entry: See Figure 101.
Note 102 to entry: Lawn scarifiers are also known as lawn rakes and dethatchers.
3.107
maximum speed
highest steady-state tines speed attainable under all conditions of normal use, including
no-load, when adjusted in accordance with the manufacturer’s specifications and/or instructions
Note 101 to entry: The steady-state tines speed excludes transients such as overshoot that may occur before
attaining a steady-state condition.
3.108
operator control
device requiring operator actuation to perform specific functions during normal operation
3.109
operator presence control
device that deactivates rotation of the tines when the operator’s hand(s) is removed from the
control
Note 101 to entry: The device typically consists of a combination of a mechanical actuator and other mechanical
and electrical components (e.g. tactile switch, relays, load switches or electronic components).
3.110
parking brake
device to prevent a stationary machine from moving
3.111
service brake
device for decelerating and stopping a machine from its ground travel speed
3.112
tines
mechanism used to provide the penetrating action or scratching action of the machine
3.113
tines assembly
tines together with any supporting part(s), which together perform the aerating or scarifying
action
3.114
tines enclosure
part or assembly which provides the protective means around the tines
3.115
tines tip circle
path described by the outermost point of the tines as they rotate about their shaft axis
3.116
traction drive
means (system) used to transmit power from the motor to the ground drive means
3.117
working position
any depth setting of the tines designated by the manufacturer

Key
1 handle
2 operator presence control
3 lock-off device
4 catcher
5 tines assembly for a lawn aerator
6 tines assembly for a lawn scarifier
Figure 101 – Example of a lawn scarifier or a lawn aerator

– 12 – IEC 62841-4-7:2022 © IEC 2022
4 General requirements
IEC 62841-1:2014, Clause 4 is applicable.
5 General conditions for the tests
IEC 62841-1:2014, Clause 5 is applicable, except as follows:
5.4 Addition:
Handle positions that are used for storage purposes are not included in this requirement.
5.7.2 Replacement:
Machines are tested at rated voltage. Machines having more than one rated voltage or having
a rated voltage range are tested at the highest voltage.
5.17 Addition:
The mass of the machine includes the tines assembly, catcher (empty) (if any), catcher
adapter (if any), tines enclosure cover (if any) in the heaviest configuration in accordance with
8.14.2.
5.101 During the tests, the tines may be adjusted and lubricated as needed to permit
operation for extended periods.
5.102 For tests that are performed at maximum speed and no-load, the manufacturer may
need to provide special hardware and/or software in order to achieve maximum speed at no-
load.
5.103 The tests are performed using all tines in accordance with 8.14.2 a) 103).
6 Radiation, toxicity and similar hazards
IEC 62841-1:2014, Clause 6 is applicable.
7 Classification
IEC 62841-1:2014, Clause 7 is applicable, except as follows:
7.1 Replacement:
Machines shall be of one of the following classes with respect to protection against electric
shock:
class II tool (machine) or class III tool (machine).
Compliance is checked by inspection and by the relevant tests.
7.2 Addition:
Class II tools (machines) shall be at least IPX4. Class III tools (machines) shall be at least
IPX1.
8 Marking and instructions
IEC 62841-1:2014, Clause 8 is applicable, except as follows:
8.1.101 Machines with more than one motor (i.e. separate motors for the tines and traction
drive) shall be marked with the rated input or rated current for each motor. These markings
may be located on each motor.
Compliance is checked by inspection.
8.2 Addition:
Lawn scarifiers and lawn aerators shall be marked with the following safety warnings:
– " WARNING – Beware of thrown objects – keep bystanders away" or one of the product
safety labels specified in Figure AA.1;
– " WARNING – Keep hands and feet away from the tines" or the product safety label
specified in Figure AA.2.
For mains supplied machines:
– " WARNING – Remove plug from mains before maintenance or if cord is damaged" or one
of the product safety labels specified in Figure AA.3;
– " WARNING – Keep the supply cord away from the tines" or the product safety label
specified in Figure AA.4.
8.3 Replacement of the sixth dashed list item:
– "> 25 kg" if the mass of the machine is over 25 kg. For this requirement, the mass of the
machine includes the mass of a supply cord with a length not less than 10 m, if any, in
addition to the items specified in 5.17.
NOTE 101 In Europe (EN IEC 62841-4-7), the following requirement applies:
Replacement of the sixth dashed list item:
– the mass of the machine in kg. For this requirement, the mass of the machine includes the mass of a supply
cord with a length not less than 10 m, if any, in addition to the items specified in 5.17.
8.9 Replacement:
Unless it is obviously unnecessary, switches and controls (e.g. a tines brake/clutch) which may
give rise to a hazard when operated shall be marked or so placed as to indicate clearly which
part of the machine they control.
Compliance is checked by inspection.
8.11 This subclause of IEC 62841-1:2014 is not applicable for traction drive speed controls.
8.14.1 Addition:
The additional safety instructions as specified in 8.14.1.101 shall be given. These additional
safety instructions may be printed separately from the "General Machine Safety Warnings".
NOTE 101 "General Machine Safety Warnings" are referred to as "General Power Tool Safety Warnings" in
IEC 62841-1:2014.
– 14 – IEC 62841-4-7:2022 © IEC 2022
8.14.1.1 Replacement for item 2) c) of IEC 62841-1:2014, 8.14.1.1:
c) Do not expose the machine to rain or wet conditions. Water entering the machine
will increase the risk of electric shock.
For machines classified at least IPX4, the warning in item c) above may be replaced as specified
below.
c) Do not operate the machine in rain or wet conditions. This may increase the risk of
electric shock.
8.14.1.101 Lawn scarifier and lawn aerator safety warnings
For the warnings below, the term "machine" may be replaced by alternate wording (e.g.
"scarifier", "lawn rake", "aerator", "verticutter" or "lawn scarifier or aerator").
a) Do not use the machine in bad weather conditions, especially when there is a risk of
lightning. This decreases the risk of being struck by lightning.
b) Thoroughly inspect the area for wildlife where the machine is to be used. Wildlife may
be injured by the machine during operation.
c) Thoroughly inspect the area where the machine is to be used and remove all stones,
sticks, wires, bones, and other foreign objects. Thrown objects can cause personal
injury.
d) Before using the machine, always visually inspect to see that the tines and the tines
assembly are not worn or damaged. Worn or damaged parts increase the risk of injury.
e) Before use, check the supply cord and any extension cord for signs of damage or
aging. Do not use the machine if the cord is damaged or worn. If the cord is damaged
or worn during use, switch off the machine and do not touch the cord before
disconnecting it from the supply. A damaged supply cord or extension cord may result in
electric shock, fire and/or serious injury.
f) Check the catcher frequently for wear or deterioration. A worn or damaged catcher may
increase the risk of personal injury.
NOTE 101 It is possible to replace the term "catcher" by an alternative term such as "collector" or "bag".
NOTE 102 The warning in item f) above is omitted for machines that are not designed to be used with a catcher.
g) Keep guards in place. Guards must be in working order and be properly mounted. A
guard that is loose, damaged, or is not functioning correctly may result in personal injury.
h) Keep all cooling air inlets clear of debris. Blocked air inlets and debris may result in
overheating or risk of fire.
i) While operating the machine, always wear non-slip and protective footwear. Do not
operate the machine when barefoot or wearing open sandals. This reduces the chance
of injury to the feet from contact with the moving tines.
j) While operating the machine, always wear long trousers. Exposed skin increases the
likelihood of injury from thrown objects.
k) Do not operate the machine in wet grass. Walk, never run. This reduces the risk of
slipping and falling which may result in personal injury.
l) Do not operate the machine on excessively steep slopes. This reduces the risk of loss
of control, slipping and falling which may result in personal injury.
m) When working on slopes, always be sure of your footing, always work across the face
of slopes, never up or down and exercise extreme caution when changing direction.
This reduces the risk of loss of control, slipping and falling which may result in personal
injury.
n) Use extreme caution when reversing or pulling the machine towards you. Always be
aware of your surroundings. This reduces the risk of tripping during operation.
o) Keep the supply cord away from the tines. A damaged supply cord may result in electric
shock, fire and/or serious injury.

p) Switch off and remove plug from mains if the cord is entangled or damaged. Entangled
or damaged cords can increase the risk of electric shock.
q) Hold the machine by insulated gripping surfaces only, because the tines may contact
hidden wiring or its own cord. Tines contacting a "live" wire may make exposed metal
parts of the machine "live" and could give the operator an electric shock.
r) Do not touch tines and other hazardous moving parts while they are still in motion.
This reduces the risk of injury from moving parts.
s) When clearing jammed material or cleaning the machine, make sure all power
switches are off and the power cord is disconnected. Unexpected operation of the
machine may result in serious personal injury.
8.14.2 a) Addition:
101) Explanation of the safety devices that the lawn scarifier or lawn aerator incorporates
as part of the original equipment;
102) Information regarding pre-operating procedures;
103) Information regarding the tines to be used on the lawn scarifier or lawn aerator;
104) Instructions on the permitted operating positions for handles.
8.14.2 b) Addition:
101) Hazards which may be encountered while using the lawn scarifier or lawn aerator,
such as blockage of the tines, and how to avoid them while performing typical tasks;
102) Instructions to stop the tines if the machine has to be tilted for transportation when
crossing surfaces other than grass and when transporting the machine to and from the
area in which it is to be used;
103) Instructions not to tilt the machine when switching on the motor, except if the machine
has to be tilted for starting. In this case, instruction not to tilt it more than is absolutely
necessary and to lift only the part which is away from the operator;
104) For single-axle machines, instructions to maintain operating position and stability by
properly grasping and supporting the handle;
105) Instructions to stop the machine, and remove plug from the socket, and to make sure
that all moving parts have come to a complete stop
– after striking a foreign object, and to inspect the machine for damage and make
repairs before restarting and operating the machine;
– if the machine starts to vibrate abnormally, and then to immediately inspect for
damage, replace or repair any damaged parts and to check for and tighten any
loose parts;
106) Recommendation for the use of a residual current device with a tripping current of
30 mA or less;
107) Instructions to empty the catcher before storage, if applicable.
8.14.2 c) Addition:
101) Information regarding regular maintenance routines;
102) Recommendations for cleaning and maintenance before storage;
103) Information explaining the consequences of improper maintenance, the use of
non-conforming replacement components, or the removal or modification of safety
components;
104) Instruction to replace worn or damaged components in sets to preserve balance, as
applicable;
105) Instructions to be careful during adjustment of the machine to prevent entrapment of
the fingers between moving tines and fixed parts of the machine;
106) Instructions to always allow the machine to cool down before storing;

– 16 – IEC 62841-4-7:2022 © IEC 2022
107) Instructions regarding replacing or servicing tines;
108) For machines where the tines may be serviced by user maintenance, advice that
when servicing the tines to be aware that, even though the power source is switched
off, the tines can still be moved.
Replacement of NOTE:
NOTE In Europe (EN IEC 62841-4-7), the following additional requirements apply:
Emissions
1) The noise emission, measured in accordance with Clause I.2, as follows:
• A-weighted emission sound pressure level L and its uncertainty K , where L exceeds 70 dB(A).
pA pA pA
Where L does not exceed 70 dB(A), this fact shall be indicated;
pA
• the A-weighted guaranteed sound power level L .
WA
2) Recommendation for the operator to wear hearing protection.
3) The vibration total value and its uncertainty measured in accordance with Clause I.3.
When the vibration total value does not exceed 2,5 m/s , this shall be stated.
When the vibration total value exceeds 2,5 m/s , its value shall be given in the instructions.
4) The following information:
• that the declared vibration total value(s) and the declared noise emission value(s) have been measured
in accordance with a standard test method and may be used for comparing one machine with another;
• that the declared vibration total value(s) and the declared noise emission value(s) may also be used in
a preliminary assessment of exposure.
5) A warning:
• that the vibration and noise emissions during actual use of the machine can differ from the declared
total value depending on the ways in which the machine is used; and
• of the need to identify safety measures to protect the operator that are based on an estimation of
exposure in the actual conditions of use (taking account of all parts of the operating cycle such as the
times when the machine is switched off and when it is running).
8.14.3 Replacement:
If information about the mass or weight of the machine is provided, it shall be the mass specified
in 5.17 together with the mass of a supply cord with a length not less than 10 m, if any.
Compliance is checked by inspection.
9 Protection against access to live parts
IEC 62841-1:2014, Clause 9 is applicable.
10 Starting
IEC 62841-1:2014, Clause 10 is applicable, except as follows:
10.1 Addition:
For the test, the tines are
...