SIST EN IEC 62841-4-3:2021

SLOVENSKI STANDARD
01-november-2021
Nadomešča:
SIST EN 60335-2-77:2010
Elektromotorna ročna orodja, prenosna orodja ter stroji za trato in vrt - Varnost - 4-
3. del: Posebne zahteve za ročno vodene vrtne kosilnice (IEC 62841-4-3:2020)
Electric motor-operated hand-held tools, transportable tools and lawn and garden
machinery - Safety - Part 4-3: Particular requirements for pedestrian controlled walk-
behind lawnmowers (IEC 62841-4-3:2020)
Elektrische motorbetriebene handgeführte Werkzeuge, transportable Werkzeuge und
Rasen- und Gartenmaschinen - Sicherheit - Teil 4-3: Besondere Anforderungen für
handgeführte Rasenmäher (IEC 62841-4-3:2020)
Outils électroportatifs à moteur, outils portables et machines pour jardins et pelouses -
Sécurité - Partie 4-3: Exigences particulières pour tondeuses à gazon à conducteur à
pied (IEC 62841-4-3:2020)
Ta slovenski standard je istoveten z: EN IEC 62841-4-3:2021
ICS:
25.140.20 Električna orodja Electric tools
65.060.70 Vrtnarska oprema Horticultural equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62841-4-3

NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2021
ICS 65.060.70 Supersedes EN 60335-2-77:2010 and all of its
amendments and corrigenda (if any)
English Version
Electric motor-operated hand-held tools, transportable tools and
lawn and garden machinery - Safety - Part 4-3: Particular
requirements for pedestrian controlled walk-behind lawnmowers
(IEC 62841-4-3:2020)
Outils électroportatifs à moteur, outils portables et machines Elektrische motorbetriebene handgeführte Werkzeuge,
pour jardins et pelouses - Sécurité - Partie 4-3: Exigences transportable Werkzeuge und Rasen- und
particulières pour tondeuses à gazon à conducteur à pied Gartenmaschinen - Sicherheit - Teil 4-3: Besondere
(IEC 62841-4-3:2020) Anforderungen für handgeführte Rasenmäher
(IEC 62841-4-3:2020)
This European Standard was approved by CENELEC on 2020-12-16. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62841-4-3:2021 E

European foreword
The text of document 116/467/FDIS, future edition 1 of IEC 62841-4-3, prepared by IEC/TC 116
“Safety of motor-operated electric tools” was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 62841-4-3:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022–02–06
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025–08–06
document have to be withdrawn
This document supersedes EN 60335-2-77:2010 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62841-4-3:2020 was approved by CENELEC as a
European Standard without any modification.

IEC 62841-4-3 ®
Edition 1.0 2020-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric motor-operated hand-held tools, transportable tools and lawn and

garden machinery – Safety –
Part 4-3: Particular requirements for pedestrian controlled walk-behind

lawnmowers
Outils électroportatifs à moteur, outils portables et machines pour jardins et

pelouses – Sécurité –
Partie 4-3: Exigences particulières pour tondeuses à gazon à conducteur à pied

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 65.060.70 ISBN 978-2-8322-8896-2

– 2 – IEC 62841-4-3:2020 © IEC 2020
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 9
4 General requirements . 11
5 General conditions for the tests . 11
6 Radiation, toxicity and similar hazards . 11
7 Classification . 12
8 Marking and instructions . 12
9 Protection against access to live parts . 16
10 Starting . 16
11 Input and current . 16
12 Heating . 16
13 Resistance to heat and fire . 17
14 Moisture resistance . 17
15 Resistance to rusting . 18
16 Overload protection of transformers and associated circuits . 18
17 Endurance . 18
18 Abnormal operation . 19
19 Mechanical hazards . 20
20 Mechanical strength . 39
21 Construction . 41
22 Internal wiring . 46
23 Components . 46
24 Supply connection and external flexible cords . 48
25 Terminals for external conductors . 50
26 Provision for earthing . 50
27 Screws and connections . 50
28 Creepage distances, clearances and distances through insulation . 50
Annexes . 55
Annex I (informative) Measurement of noise and vibration emissions . 55
Annex K (normative) Battery tools and battery packs . 64
Annex L (normative) Battery tools and battery packs provided with mains connection
or non-isolated sources . 80
Annex AA (normative) Safety signs . 86
Annex BB (normative) Test enclosure . 92
Annex CC (normative) Rotary lawnmower foot protection test . 101
Annex DD (normative) Lawnmower cutting means stopping time test . 110
Annex EE (informative) Example of a material and construction for fulfilling the
requirements for an artificial surface . 112
Bibliography . 114

IEC 62841-4-3:2020 © IEC 2020 – 3 –
Figure 101 – Operator control zones . 24
Figure 102 – Handle distance and rear cutting means enclosure for rotary lawnmowers . 27
Figure 103 – Example of design for rotary lawnmower front opening . 28
Figure 104 – Examples of front opening allowance for rotary lawnmowers . 29
Figure 105 – Obstruction test . 35
Figure 106 – Guarding of cylinder lawnmower cutting means, general . 37
Figure 107 – Guarding of cylinder lawnmower cutting means, side coverage . 37
Figure 108 – Guarding of cylinder lawnmower cutting means, free and rear discharge . 38
Figure 109 – Guarding of cylinder lawnmower cutting means, front discharge . 38
Figure 110 – Cylinder lawnmower throw line and handle distance . 39
Figure 111 – Impact test fixture for handle insulation . 42
Figure 112 – Lawnmower cutting means measurement . 46
Figure 113 – Test assembly for accessibility of attachment plug blades . 49
Figure I.101 – Microphone positions on the hemisphere (see Table I.101) . 56
Figure I.102 – Examples of positions of transducers for lawnmowers . 62
Figure K.301 – Examples of separable battery pack connection points and direction of
applied force . 74
Figure AA.1 – Safety signs illustrating – "WARNING – Beware of thrown objects – keep
bystanders away" . 86
Figure AA.2 – Safety signs illustrating – "WARNING – Remove plug from mains before
maintenance or if cord is damaged" . 87
Figure AA.3 – Safety sign illustrating – "WARNING – Keep the supply cord away from
the blades” . 87
Figure AA.4 – Safety signs illustrating – "WARNING – Keep hands and feet away from
the blades" . 88
Figure AA.5 – Safety signs illustrating – "WARNING – Disconnect battery before
maintenance" . 89
Figure AA.6 – Safety signs illustrating – "WARNING – Remove the disabling device
before maintenance" . 90
Figure AA.7 – Safety signs illustrating – "WARNING – Activate the disabling device
before maintenance" . 91
Figure AA.8 – Safety sign illustrating – "DANGER – Keep hands and feet away" . 91
Figure BB.1 – Test enclosure, construction detail . 92
Figure BB.2 – Base detail . 93
Figure BB.3 – Example of base, nail plan . 93
Figure BB.4 – Test enclosure, general view . 95
Figure BB.5 – Test enclosure, single spindle rotary lawnmower . 96
Figure BB.6 – Test enclosure, multiple spindle rotary lawnmower . 97
Figure BB.7 – Fixture for fibreboard penetration test . 99
Figure CC.1 – Foot probe . 102
Figure CC.2 – Areas to be probed for rotary lawnmowers . 104
Figure CC.3 – Area to be probed for rotary lawnmowers with movable offset handles . 105
Figure CC.4 – Area to be probed for air-cushion lawnmowers with single cutting means . 106
Figure CC.5 – Area to be probed for air-cushion lawnmowers with multiple cutting
means . 107
Figure CC.6 – Area to be probed for rotary lawnmowers with single cutting means . 108

– 4 – IEC 62841-4-3:2020 © IEC 2020
Figure CC.7 – Area to be probed for rotary lawnmowers with multiple cutting means . 109
Figure EE.1 – Sketch of the measurement surface covered with an artificial surface . 113

Table 4 – Required performance levels . 20
Table 101 – Cutting means stopping time . 32
Table 102 – Permissible hits from thrown object test . 34
Table 9 – Pull and torque value . 50
Table 12 – Minimum creepage distances and clearances . 52
Table I.101 – Co-ordinates of microphone positions . 58
Table I.102 – Values of the constant a . 58
Table I.103 – Absorption coefficients . 59
Table 4 – Required performance levels . 69
Table 301 – Pull and torque value . 76
Table K.1 – Minimum creepage distances and clearances between parts of different
potential . 78
Table K.2 – Minimum total sum of creepage distances and clearances to accessible
surfaces . 79
Table 4 – Required performance levels . 82

IEC 62841-4-3:2020 © IEC 2020 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY – SAFETY –

Part 4-3: Particular requirements for pedestrian
controlled walk-behind lawnmowers

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.
International Standard IEC 62841-4-3 has been prepared by IEC technical committee 116:
Safety of motor-operated electric tools.
The text of this International standard is based on the following documents:
FDIS Report on voting
116/467/FDIS 116/478/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 6 – IEC 62841-4-3:2020 © IEC 2020
This Part 4-3 is to be used in conjunction with the first edition of IEC 62841-1:2014.
This Part 4-3 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
lawnmowers.
Where a particular subclause of Part 1 is not mentioned in this Part 4-3, that subclause
applies as far as reasonable. Where this document states “addition”, “modification” or
“replacement”, the relevant text in Part 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 Part 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 Part 4-3 are numbered starting from 301.
A list of all parts of the IEC 62841 series, 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.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication 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.

IEC 62841-4-3:2020 © IEC 2020 – 7 –
ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE
TOOLS AND LAWN AND GARDEN MACHINERY – SAFETY –

Part 4-3: Particular requirements for pedestrian
controlled walk-behind lawnmowers

1 Scope
This clause of Part 1 is applicable, except as follows:
Addition:
This document applies to the design of pedestrian controlled walk-behind
– cylinder lawnmowers;
and
– rotary lawnmowers
equipped with
– metallic cutting means; and/or
– rigid non-metallic cutting means; and/or
– non-metallic cutting means with one or more cutting elements pivotally mounted on a
generally circular drive unit, where these cutting elements rely on centrifugal force to
achieve cutting, and have a kinetic energy for each single cutting element of greater than
10 J.
NOTE 101 Machines that have non-metallic cutting means and a kinetic energy for each single cutting element
of less than or equal to 10 J are considered to be lawn trimmers.
This document does not apply to
– robotic lawnmowers;
– remote-controlled lawnmowers;
– flail mowers or flail-type attachments;
– scissors type lawnmowers;
– grassland mowers;
– sickle bar mowers;
– towed/semi-mounted grass-cutting machines;
– scrub-clearing machines;
– lawn trimmers and lawn edge trimmers;
– lawn edgers;
– grass trimmers;
– brush cutters;
– brush saws;
– agricultural mowers;
– trailing seat/sulky units;
– ride-on machines;
– 8 – IEC 62841-4-3:2020 © IEC 2020
– non-powered lawnmowers;
– combustion engine powered lawnmowers;
– hybrid and fuel cell powered machines and associated charging systems; and
– garden tractors or their attachments.
NOTE 102 Robotic lawnmowers are covered by IEC 60335-2-107, and will be covered by a future part of
IEC 62841.
NOTE 103 Lawn trimmers and lawn edge trimmers are covered by IEC 60335-2-91.
NOTE 104 Lawn trimmers, lawn edge trimmers, grass trimmers, brush cutters and brush saws will be covered by
a future part of IEC 62841.
NOTE 105 Lawn edgers will be covered by a future part of IEC 62841.
2 Normative references
This clause of Part 1 is applicable, except as follows:
Addition:
IEC 60664-3, Insulation coordination for equipment within low-voltage systems – Part 3: Use
of coating, potting or moulding for protection against pollution
IEC 60664-4, 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, Electroacoustics – Sound level meters – Part 1: Specifications
ISO 354:2003, Acoustics – Measurement of sound absorption in a reverberation room
ISO 5395-1:2013, Garden equipment – Safety requirements for combustion-engine-powered
lawnmowers – Part 1: Terminology and common tests
ISO 5395-1:2013/AMD1:2017
ISO 5395-2:2013/AMD1:2016, Garden equipment – Safety requirements for combustion-
engine-powered lawnmowers – Part 2: Pedestrian-controlled lawnmowers
ISO 5395-2:2013/AMD1:2016/AMD2:2017
ISO 13857:2019, Safety of machinery – Safety distances to prevent hazard zones being
reached by upper and lower limbs
ANSI B71.1:2017, Consumer turf care equipment – Pedestrian-controlled mowers and ride-on
mowers – Safety specifications
EN 12096, Mechanical Vibration – Declaration and Verification of Vibration Emission Values
Replacement:
IEC 61058-1:2016, Switches for appliances – Part 1: General requirements

IEC 62841-4-3:2020 © IEC 2020 – 9 –
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
This clause of Part 1 is applicable, except as follows:
3.101
cutter bar
stationary device used on a cylinder lawnmower to provide a shearing action in combination
with the cutting means
3.102
cutting height
shortest vertical distance between the cutting edge of the cutting means and the supporting
surface of a lawnmower
3.103
cutting means
rotating mechanism or rotating part of the lawnmower that is designed to perform the cutting
action
Note 101 to entry: Cutting means are also known as blades, cutting cylinders or reels.
3.104
cutting means assembly
cutting means together with the cutting means enclosure, including cutting means shaft(s)
3.105
cutting means control
device to engage and disengage the cutting means from its drive, in order to start and stop
the cutting means motion
3.106
cutting means enclosure
part or assembly, including the discharge chute and guard for grass catcher opening,
designed to prevent unintended contact with the cutting means
3.107
cutting means tip circle
path described by the outermost point of the rotary lawnmower cutting means cutting edge
as it rotates about its shaft axis
3.108
cutting position
any height setting of the cutting means designated by the manufacturer for cutting grass
3.109
cutting width
total distance across the cutting means path at 90º to the direction of travel

– 10 – IEC 62841-4-3:2020 © IEC 2020
3.110
discharge chute
portion of the cutting means enclosure, extending outward from the discharge opening,
designed to control the ejection of material from the cutting means
3.111
discharge opening
opening in the cutting means enclosure through which material such as grass clippings can
be discharged
3.112
grass catcher
part or combination of parts, intended to be used with the lawnmower, which provides a
means for collecting material such as grass clippings
3.113
lawnmower
pedestrian controlled walk-behind lawn cutting machine, where the cutting means cuts
approximately parallel to the ground and which uses the ground to determine the cutting
height by means of wheels, air-cushion or skids, etc.
3.113.1
air-cushion lawnmower
rotary lawnmower which hovers using pressurized air as its ground support
3.113.2
cylinder lawnmower
lawnmower with one or more cutting means rotating about a horizontal axis to provide a
shearing action with a cutter bar
Note 101 to entry: Cylinder lawnmowers are also known as reel lawnmowers.
3.113.3
rotary lawnmower
lawnmower in which one or more cutting means, cutting by impact, rotate about an axis
perpendicular to the cutting plane
3.114
maximum speed
highest cutting means speed attainable under all conditions of normal use, including no-load
3.115
mulching
mode of operation of a rotary lawnmower, having a fixed or optional configuration, which
returns clippings to the lawn without discharge openings
Note 101 to entry: Some lawnmowers are converted to a mulching type by the use of mulching parts or plugs.
3.116
operator control
device requiring operator actuation to perform specific functions during normal operation
3.117
operator presence control
device that deactivates rotation of the cutting means 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).

IEC 62841-4-3:2020 © IEC 2020 – 11 –
3.118
parking brake
device to prevent a stationary machine from moving
3.119
service brake
device for decelerating and stopping a machine from its ground travel speed
3.120
throw line
steepest line in a vertical plane, tangential to the periphery of the cutting cylinder in the
direction of rotation, which does not intersect a guard or other components of a cylinder
lawnmower
4 General requirements
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 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 cutting means, grass catcher (empty) (if any), grass
catcher adapter (if any), mulching parts or plug (if any), cutting means enclosure cover (if
any) in the heaviest configuration in accordance with 8.14.2.
5.101 During the tests, the cutting means may be adjusted and lubricated as needed to
permit operation for extended periods.
NOTE 101 For example, it is possible that a cylinder lawnmower cutting means is not able to run for extended
periods at normal adjustment because of lack of lubrication, etc. normally provided by the grass.
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 cutting means in accordance with 8.14.2 a) 103).
6 Radiation, toxicity and similar hazards
This clause of Part 1 is applicable.

– 12 – IEC 62841-4-3:2020 © IEC 2020
7 Classification
This clause of Part 1 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), 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
This clause of Part 1 is applicable, except as follows:
8.1.101 Machines with more than one motor (i.e. separate motors for the cutting means and
traction drive) shall be marked with the rated input, in watts or rated current, in amperes, for
each motor. These markings may be located on each motor.
Compliance is checked by inspection.
8.2 Addition:
Lawnmowers shall be marked with the following safety warnings:
– “ WARNING – Beware of thrown objects – keep bystanders away” or one of the safety
signs specified in Figure AA.1;
For mains supplied machines:
– “ WARNING – Remove plug from mains before maintenance or if cord is damaged” or
one of the safety signs specified in Figure AA.2;
– “ WARNING – Keep the supply cord away from the blades” or the safety sign specified
in Figure AA.3.
Rotary lawnmowers shall be marked with the following safety warning:
– “ WARNING – Keep hands and feet away from the blades” or one of the safety signs
specified in Figure AA.4.
NOTE 101 In the United States of America, the following additional requirements apply.
For lawnmowers in accordance with 16 CFR 1205:
– Warning label for cylinder lawnmowers and rotary lawnmowers.
(a) General. Walk-behind cylinder lawnmowers and rotary lawnmowers shall be labeled on the blade (cutting
means) housing or, in the absence of a blade (cutting means) housing, on other blade (cutting means)
shielding or on an adjacent supporting structure or assembly, with the warning label shown in Figure AA.8. The
label shall be at least 82,5 mm high and 102 mm wide, and the lettering and symbol shall retain the same size
relation to each other and to the label as shown in Figure AA.8.

IEC 62841-4-3:2020 © IEC 2020 – 13 –
(b) Rotary lawnmowers. Walk-behind rotary lawnmowers shall have one label as shown in Figure AA.8, on the
blade (cutting means) housing. The label shall be located as close as possible to any discharge opening, or,
if there is no discharge opening, in a position that is conspicuous to an operator in the normal operating
position.
(c) Cylinder lawnmowers. Walk-behind cylinder lawnmowers shall have one label as shown in Figure AA.8,
located as close to the centre of the cutting width of the blade (cutting means) as possible. However, in the
absence of a suitable mounting surface near the centre of the cutting width, the label shall be placed on the
nearest suitable mounting surface to the centre of the cutting width.
8.3 Addition:
For rotary lawnmowers, the cutting means, where replaceable during user maintenance,
shall be marked to identify the part number(s) and the manufacturer, importer or supplier. This
marking is not required to be clearly discernible from the outside of the machine.
NOTE 101 In the United States of America, the following additional requirements apply.
For rotary lawnmowers in accordance with 16 CFR 1205:
Rotary lawnmowers shall be marked with “Meets CPSC blade safety requirements” on the product.
Replacement of the sixth dash:
– “> 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 102 In Europe, the following requirement applies:
Replacement of the sixth dash:
– 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 cutting means 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 Part 1 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. This part may be
printed separately from the “General Machine Safety Warnings”.
8.14.1.1 Addition for item 2) c):
For machines classified at least IPX4, the warning may be replaced as specified below.
c) Do not operate the lawnmower in rain or wet conditions. This may increase the risk of
electric shock.
8.14.1.101 Lawnmower safety warnings
a) Do not use the lawnmower 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 lawnmower is to be used. Wildlife
may be injured by the lawnmower during operation.

– 14 – IEC 62841-4-3:2020 © IEC 2020
c) Thoroughly inspect the area where the lawnmower 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 lawnmower, always visually inspect to see that the blade and the
blade 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 lawnmower if the cord is damaged or worn. If the cord is
damaged or worn during use, switch off the lawnmower 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 grass catcher frequently for wear or deterioration. A worn or damaged
grass 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 above warning is omitted for machines that can only be operated as a mulching lawnmower.
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 lawnmower, always wear non-slip and protective footwear. Do
not operate the lawnmower when barefoot or wearing open sandals. This reduces the
chance of injury to the feet from contact with the moving blade.
j) While operating the lawnmower, always wear long trousers. Exposed skin increases
the likelihood of injury from thrown objects.
k) Do not operate the lawnmower 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 lawnmower 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 lawnmower towards you. Always
be aware of your surroundings. This reduces the risk of tripping during operation.
o) Keep the supply cord away from the cutting blades. 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) Do not touch blades and other hazardous moving parts while they are still in motion.
This reduces the risk of injury from moving parts.
r) When clearing jammed material or cleaning the lawnmower, make sure all power
switches are off and the power cord is disconnected. Unexpected operation of the
lawnmower may result in serious personal injury.
8.14.2 a) Addition:
101) Explanation of the safety devices that the lawnmower incorporates as part of the
original equipment;
102) Information regarding pre-operating procedures;
103) Information regarding the recommended cutting means to be used on the lawnmower;
104) Instructions on the permitted operating positions for handles.

IEC 62841-4-3:2020 © IEC 2020 – 15 –
8.14.2 b) Addition:
101) Hazards which may be encountered while using the lawnmower, such as blockage of
the cutting means, and how to avoid them while performing typical tasks;
102) Instructions to stop the cutting means 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 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 absolutely
necessary and to lift only the part which is away from the operator;
104) 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,
...