Agricultural and forestry machinery - Safety requirements and testing for portable, hand-held, powered brush-cutters and grass-trimmers - Part 1: Machines fitted with an integral combustion engine (ISO 11806-1:2011)

ISO 11806-1:2011 gives safety requirements and measures for their verification for the design and construction of portable hand-held, powered brush-cutters and grass-trimmers (hereafter called machines) having an integral combustion engine as their power unit and mechanical power transmission between the power source and the cutting attachment. Methods for the elimination or reduction of hazards arising from the use of these machines and the type of information on safe working practices to be provided by the manufacturer are specified.
ISO 11806-1:2011 deals with all significant hazards, hazardous situations and hazardous events relevant to these machines, as well as when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer.
ISO 11806-1:2011 is not applicable to machines equipped with metallic cutting attachments consisting of more than one piece, e.g. pivoting chains or flail blades.
ISO 11806-1:2011 is applicable to portable, hand-held, powered brush-cutters and grass-trimmers manufactured after its date of publication.

Land- und forstwirtschaftliche Maschinen - Sicherheitstechnische Anforderungen und Prüfung für tragbare handgehaltene motorbetriebene Freischneider und Grastrimmer - Teil 1: Maschinen mit Antrieb durch integrierten Verbrennungsmotor (ISO 11806-1:2011)

Dieser Teil der ISO 11806 legt sicherheitstechnische Anforderungen und Maßnahmen zu deren Überprüfung für die Gestaltung und Konstruktion von tragbaren, handgehaltenen motorbetriebenen Freischneidern und Grastrimmern (im Folgenden Maschinen genannt), mit eingebautem Verbrennungsmotor als Antriebseinheit und mechanischer Kraftübertragung zwischen Antriebsquelle und Schneidgarnitur fest. Methoden zur Vermeidung oder Verminderung der sich aus dem Gebrauch ergebenden Gefährdungen dieser Maschinen sowie Informationen über sicheres Arbeiten, die vom Hersteller zur Verfügung zu stellen sind, werden festgelegt. Dieser Teil der ISO 11806 behandelt alle signifikanten Gefährdungen, Gefährdungssituationen und Gefährdungsereignisse, die für diese Maschinen relevant sind, sofern sie zu dem vorgesehenen Zweck und bei vernünftigerweise durch den Hersteller vorhersehbarem Missbrauch eingesetzt werden. Dieser Teil der ISO 11806 gilt nicht für Maschinen, die mit mehrteiligen, metallischen Schneidwerkzeugen, z. B. schwenkbaren Ketten oder Schlegelmessern, ausgestattet sind. ANMERKUNG Siehe Anhang D zur Liste der signifikanten Gefährdungen. Dieser Teil der ISO 11806 gilt für tragbare handgehaltene motorbetriebene Freischneider und Grastrimmer, die nach dem Veröffentlichungsdatum dieser Norm hergestellt wurden.

Matériel agricole et forestier - Exigences de sécurité et essais pour débroussailleuses et coupe-herbe portatifs à moteur - Partie 1: Machines équipées d'un moteur à combustion interne intégré (ISO 11806-1:2011)

L'ISO 11806-1:2011 spécifie les exigences de sécurité et les mesures pour leur vérification, pour la conception et la construction des débroussailleuses et des coupe-herbe portatifs à moteur, tenus à la main, équipés d'un moteur à combustion interne intégré comme source motrice et d'une transmission mécanique de puissance entre la source motrice et le dispositif de coupe (appelées «machines» dans la suite du texte). Elle spécifie également des méthodes pour éliminer ou réduire les phénomènes dangereux inhérents à l'utilisation de ces machines, ainsi que le type d'informations sur les pratiques d'utilisation sûres à fournir par le fabricant.
L'ISO 11806-1:2011 traite de tous les phénomènes dangereux significatifs, situations dangereuses ou événements dangereux pertinents pour ces machines, lorsqu'elles sont utilisées comme prévu et dans des conditions de mauvais usage raisonnablement prévisibles par le fabricant.
L'ISO 11806-1:2011 n'est pas applicable aux machines équipées de dispositifs de coupe métallique composés de plus d'une pièce, par exemple des chaînes articulées ou des lames articulées.
L'ISO 11806-1:2011 est applicable aux machines fabriquées après sa date de publication.

Kmetijski in gozdarski stroji - Tehnične varnostne zahteve in preskus za prenosne, ročno vodene kosilnice s prosto rezjo, opremljene z rezilno ploščo ali kosilno nitko - 1. del: Naprave z motorjem z notranjim zgorevanjem (ISO 11806-1:2011)

Ta del standarda ISO 11806 določa varnostne zahteve in ukrepe za njihovo preverjanje za zasnovo in konstrukcijo prenosnih, ročno vodenih kosilnic s prosto rezjo, opremljenih z rezilno ploščo ali kosilno nitko (v nadaljevanju: »stroji«), ki imajo motorje z notranjim izgorevanjem in mehanski prenos napajanja med virom napajanja in nastavkom za rezanje. Predpisane so metode za odpravljanje ali zmanjšanje tveganj, ki izhajajo iz uporabe teh strojev, in vrsta informacij o varnih delovnih praksah, ki jih mora zagotoviti proizvajalec. Ta del standarda ISO 11806 opisuje vsa večja tveganja, nevarne situacije in nevarne dogodke v zvezi s temi stroji, kadar se uporabljajo v skladu z njihovim namenom in pod pogoji pričakovane nepravilne uporabe, ki jih določa proizvajalec. Ta del standarda ISO 11806 se ne uporablja za stroje, opremljene s kovinskimi nastavki za rezanje, ki jih sestavlja več delov, npr. vrteče se verige ali mlatilne lopatice. Ta del standarda ISO 11806 se uporablja za prenosne, ročne motorne žage za nego in motorne kose, izdelane po datumu njegove izdaje.

General Information

Status
Published
Publication Date
30-Nov-2011
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
01-Dec-2011
Completion Date
01-Dec-2011

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SLOVENSKI STANDARD
SIST EN ISO 11806-1:2012
01-marec-2012

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URþQRYRGHQHNRVLOQLFHVSURVWRUH]MRRSUHPOMHQH]UH]LOQRSORãþRDOLNRVLOQR
QLWNRGHO1DSUDYH]PRWRUMHP]QRWUDQMLP]JRUHYDQMHP ,62

Agricultural and forestry machinery - Safety requirements and testing for portable, hand-

held, powered brush-cutters and grass-trimmers - Part 1: Machines fitted with an integral

combustion engine (ISO 11806-1:2011)

Land- und forstwirtschaftliche Maschinen - Sicherheitstechnische Anforderungen und

Prüfung für tragbare handgehaltene motorbetriebene Freischneider und Grastrimmer -

Teil 1: Maschinen mit Antrieb durch Verbrennungsmotor (ISO 11806-1:2011)

Matériel agricole et forestier - Exigences de sécurité et essais pour débroussailleuses et

coupe-herbe portatifs à moteur - Partie 1: Machines équipées d'un moteur à combustion

interne intégré (ISO 11806-1:2011)
Ta slovenski standard je istoveten z: EN ISO 11806-1:2011
ICS:
65.060.80 Gozdarska oprema Forestry equipment
SIST EN ISO 11806-1:2012 en,fr

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 11806-1:2012
---------------------- Page: 2 ----------------------
SIST EN ISO 11806-1:2012
EUROPEAN STANDARD
EN ISO 11806-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2011
ICS 65.060.80 Supersedes EN ISO 11806:2008
English Version
Agricultural and forestry machinery - Safety requirements and
testing for portable, hand-held, powered brush-cutters and
grass-trimmers - Part 1: Machines fitted with an integral
combustion engine (ISO 11806-1:2011)

Matériel agricole et forestier - Exigences de sécurité et Land- und forstwirtschaftliche Maschinen -

essais pour débroussailleuses et coupe-herbe portatifs à Sicherheitstechnische Anforderungen und Prüfung für

moteur - Partie 1: Machines équipées d'un moteur à tragbare handgehaltene motorbetriebene Freischneider und

combustion interne intégré (ISO 11806-1:2011) Grastrimmer - Teil 1: Maschinen mit Antrieb durch

Verbrennungsmotor (ISO 11806-1:2011)
This European Standard was approved by CEN on 30 November 2011.

CEN 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 CEN 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 CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same

status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,

Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11806-1:2011: E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 11806-1:2012
EN ISO 11806-1:2011 (E)
Contents Page

Foreword ..............................................................................................................................................................3

Annex ZA (informative) Relationship between this European Standard and the Essential

Requirements of EU Directive 2006/42/EC ..........................................................................................4

---------------------- Page: 4 ----------------------
SIST EN ISO 11806-1:2012
EN ISO 11806-1:2011 (E)
Foreword

This document (EN ISO 11806-1:2011) has been prepared by Technical Committee ISO/TC 23 "Tractors and

machinery for agriculture and forestry" in collaboration with Technical Committee CEN/TC 144 “Tractors and

machinery for agriculture and forestry” the secretariat of which is held by AFNOR.

This European Standard shall be given the status of a national standard, either by publication of an identical

text or by endorsement, at the latest by June 2012, and conflicting national standards shall be withdrawn at

the latest by June 2012.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 11806:2008.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association, and supports essential requirements of EU Directive.

For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech

Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
Endorsement notice

The text of ISO 11806-1:2011 has been approved by CEN as EN ISO 11806-1:2011 without any modification.

---------------------- Page: 5 ----------------------
SIST EN ISO 11806-1:2012
EN ISO 11806-1:2011 (E)
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC

This European Standard has been prepared under a mandate given to CEN by the European Commission

and the European Free Trade Association to provide one means of conforming to Essential Requirements of

the New Approach Directive 2006/42/EC on machinery.

Once this standard is cited in the Official Journal of the European Union under that Directive and has been

implemented as a national standard in at least one Member State, compliance with the normative clauses of

this standard confers, within the limits of the scope of this standard, a presumption of conformity with the

relevant Essential Requirements of that Directive and associated EFTA regulations.

WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling

within the scope of this standard.
---------------------- Page: 6 ----------------------
SIST EN ISO 11806-1:2012
INTERNATIONAL  ISO
STANDARD 11806-1
First edition
2011-12-01
Agricultural and forestry machinery —
Safety requirements and testing for
portable, hand-held, powered brush-
cutters and grass-trimmers —
Part 1:
Machines fitted with an integral
combustion engine
Matériel agricole et forestier — Exigences de sécurité et essais pour
débroussailleuses et coupe-herbe portatifs à moteur —
Partie 1: Machines équipées d’un moteur à combustion interne intégré
Reference number
ISO 11806-1:2011(E)
 ISO 2011
---------------------- Page: 7 ----------------------
SIST EN ISO 11806-1:2012
ISO 11806-1:2011(E)
COPYRIGHT PROTECTED DOCUMENT
©  ISO 2011

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 ISO at the address below or ISO’s

member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2011 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 11806-1:2012
ISO 11806-1:2011(E)
Contents Page

Foreword ............................................................................................................................................................................iv

Introduction ........................................................................................................................................................................v

1 Scope ...................................................................................................................................................................... 1

2 Normative references ......................................................................................................................................... 1

3 Terms and definitions ......................................................................................................................................... 2

4 Safety requirements and/or protective measures ...................................................................................... 4

4.1 General ................................................................................................................................................................... 4

4.2 Handles .................................................................................................................................................................. 5

4.3 Barrier and distance to cutting attachment for brush-cutters ................................................................ 6

4.4 Harness .................................................................................................................................................................. 7

4.5 Balance ................................................................................................................................................................... 8

4.6 Cutting-attachment strength ............................................................................................................................ 8

4.7 Cutting-attachment retention ........................................................................................................................... 8

4.8 Cutting-attachment guards ............................................................................................................................... 9

4.9 Transport cover .................................................................................................................................................... 9

4.10 Length of flexible cutting lines ......................................................................................................................10

4.11 Engine starting device .....................................................................................................................................10

4.12 Engine stopping device ...................................................................................................................................10

4.13 Throttle control ..................................................................................................................................................10

4.14 Clutch ...................................................................................................................................................................12

4.15 Tanks .....................................................................................................................................................................12

4.16 Protection against contact with parts under high voltage .....................................................................13

4.17 Protection against contact with hot parts ..................................................................................................13

4.18 Exhaust gases ....................................................................................................................................................14

4.19 Vibration ...............................................................................................................................................................14

4.20 Noise .....................................................................................................................................................................14

4.21 Electromagnetic immunity ..............................................................................................................................15

5 Information for use ...........................................................................................................................................15

5.1 Instruction handbook .......................................................................................................................................15

5.2 Marking .................................................................................................................................................................17

5.3 Warnings ..............................................................................................................................................................18

5.4 Test of labels .......................................................................................................................................................19

Annex A (normative) Cutting-attachment impact test ............................................................................................21

Annex B (normative) Thrown objects test .................................................................................................................23

Annex C (informative) List of significant hazards ....................................................................................................27

Bibliography .....................................................................................................................................................................29

© ISO 2011 – All rights reserved  iii
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SIST EN ISO 11806-1:2012
ISO 11806-1:2011(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

(ISO member bodies). The work of preparing International Standards is normally carried out through ISO

technical committees. Each member body interested in a subject for which a technical committee has been

established has the right to be represented on that committee. International organizations, governmental and

non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International

Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 11806-1 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and

forestry, Subcommittee SC 17, Manually portable forest machinery.

This first edition of ISO 11806-1 cancels and replaces ISO 11806:1997, of which it is also a technical revision.

ISO 11806 consists of the following parts, under the general title Agricultural and forestry machinery — Safety

requirements and testing for portable, hand-held, powered brush-cutters and grass-trimmers:

—  Part 1: Machines fitted with an integral combustion engine
—  Part 2: Machines for use with back-pack power unit
iv © ISO 2011 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 11806-1:2012
ISO 11806-1:2011(E)
Introduction
This document is a type-C standard as stated in ISO 12100.

The machinery concerned and the extent to which hazards, hazardous situations or hazardous events are

covered are indicated in the scope of this document.

When requirements of this type-C standard are different from those which are stated in type-A or type-B

standards, the requirements of this type-C standard take precedence over the requirements of the other

standards for machines that have been designed and built according to the requirements of this type-C standard.

© ISO 2011 – All rights reserved  v
---------------------- Page: 11 ----------------------
SIST EN ISO 11806-1:2012
---------------------- Page: 12 ----------------------
SIST EN ISO 11806-1:2012
INTERNATIONAL STANDARD ISO 11806-1:2011(E)
Agricultural and forestry machinery — Safety requirements
and testing for portable, hand-held, powered brush-cutters and
grass-trimmers —
Part 1:
Machines fitted with an integral combustion engine
1 Scope

This part of ISO 11806 gives safety requirements and measures for their verification for the design and

construction of portable hand-held, powered brush-cutters and grass-trimmers (hereafter called machines)

having an integral combustion engine as their power unit and mechanical power transmission between the

power source and the cutting attachment. Methods for the elimination or reduction of hazards arising from the

use of these machines and the type of information on safe working practices to be provided by the manufacturer

are specified.

This part of ISO 11806 deals with all significant hazards, hazardous situations and hazardous events relevant

to these machines, as well as when they are used as intended and under conditions of misuse which are

reasonably foreseeable by the manufacturer.

This part of ISO 11806 is not applicable to machines equipped with metallic cutting attachments consisting of

more than one piece, e.g. pivoting chains or flail blades.
NOTE  See Annex C for a list of significant hazards.

This part of ISO 11806 is applicable to portable, hand-held, powered brush-cutters and grass-trimmers

manufactured after its date of publication.
2 Normative references

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced document

(including any amendments) applies.

ISO 683-9:1988, Heat-treatable steel, alloy steels and free-cutting steels — Part 9: Wrought free-cutting steels

ISO 7112, Machinery for forestry — Portable brush-cutters and grass-trimmers — Vocabulary

ISO 7113:1999, Portable hand-held forestry machines — Cutting attachments for brush cutters — Single-piece

metal blades

ISO 7918,  Forestry machinery — Portable brush-cutters and grass-trimmers — Cutting attachment guard

dimensions

ISO 8380,  Forestry machinery — Portable brush-cutters and grass-trimmers — Cutting attachment guard

strength

ISO 8893, Forestry machinery — Portable brush-cutters and grass-trimmers — Engine performance and fuel

consumption

ISO/TR 11688-1, Acoustics — Recommended practice for the design of low-noise machinery and equipment —

Part 1: Planning

ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction

© ISO 2011 – All rights reserved  1
---------------------- Page: 13 ----------------------
SIST EN ISO 11806-1:2012
ISO 11806-1:2011(E)

ISO 13857:2008, Safety of machinery — Safety distances to prevent hazard zones being reached by upper

and lower limbs

ISO 14982:1998, Agricultural and forestry machinery — Electromagnetic compatibility — Test methods and

acceptance criteria

ISO 22867, Forestry and gardening machinery — Vibration test code for portable hand-held machines with

internal combustion engine — Vibration at the handles

ISO 22868, Forestry and gardening machinery — Noise test code for portable hand-held machines with internal

combustion engine — Engineering method (Grade 2 accuracy)

IEC 60745-1:2006, Hand-held motor-operated electric tools — Safety — Part 1: General requirements

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 7112, ISO 12100 and the following

apply.

NOTE  Figure 1 provides an example of a brush-cutter and Figure 2 of a grass-trimmer within the scope of this part of

ISO 11806.
3.1
machine

complete brush-cutter (or grass-trimmer) including power unit, drive shaft tube, cutting attachment and guard,

but excluding the harness
2 © ISO 2011 – All rights reserved
---------------------- Page: 14 ----------------------
SIST EN ISO 11806-1:2012
ISO 11806-1:2011(E)
111 111222
333
222
111111
555
666
444
777
111000
999 8
Key
1  throttle trigger lockout
2  stop switch
3  suspension point
4  handle
5  throttle trigger
6  drive shaft tube
7  harness, quick-release mechanism
8  harness, hip pad
9  cutting-attachment guard
10 cutting attachment, e.g. saw blade
11  muffler
12 power unit
Figure 1 — Brush-cutter with integral power source
© ISO 2011 – All rights reserved  3
---------------------- Page: 15 ----------------------
SIST EN ISO 11806-1:2012
ISO 11806-1:2011(E)
111000
888
333
555
222 111
444
666
777
999
Key
1  choke
2  rear handle
3  stop switch
4  throttle trigger
5  front handle
6  drive shaft tube
7  cutting-attachment guard
8  muffler
9  cutting attachment, e.g string trimmer head
10  power unit
Figure 2 — Grass-trimmer with integral power source
4 Safety requirements and/or protective measures
4.1 General

Machines shall comply with the safety requirements and/or protective measures of this clause. In addition, the

machine shall be designed according to the principles of ISO 12100 for relevant but not significant hazards

which are not dealt with by this part of ISO 11806. The machine shall also be marked according to 5.2 and carry

warnings according to 5.3.

The safe operation of a brush-cutter and a grass-trimmer depends on both the safety requirements given in

this clause and the safe working conditions associated with the use of adequate personal protection equipment

(PPE), such as gloves, slip-resistant footwear, and leg, eye and hearing protection equipment, as well as safe

working procedures (see 5.1).
The instruction handbook to be provided with the machine shall comply with 5.1.
4 © ISO 2011 – All rights reserved
---------------------- Page: 16 ----------------------
SIST EN ISO 11806-1:2012
ISO 11806-1:2011(E)

If a grass-trimmer can be converted to a brush-cutter then the converted machine shall comply with requirements

for a brush-cutter and vice versa.

The overall safety of the separate cutting attachment has to be verified as a part of the complete machine.

Except where otherwise specified in this part of ISO 11806, the safety distances specified in ISO 13857:2008,

4.2.4.1 and 4.2.4.3, shall be met.

If a special tool is required to replace a cutting attachment, it shall be supplied with the machine.

4.2 Handles
4.2.1 Requirements

The machine shall have a handle for each hand. These handles shall be designed such that:

—  they can be fully gripped by an operator when wearing gloves;
—   they provide the necessary sureness of grip by their shaping and surface;
—  they have a length of at least 100 mm;

—  the distance l (see Figure 3) between the centre of the handles is at least 500 mm for those machines

which can be equipped with metal saw blades, and at least 250 mm for all others;

—  they are adjustable so that a suitable ergonomic working position can be achieved. An adjustment below

the minimum distance l shall be prevented by design.

NOTE  The position of the operator relative to the cutting attachment is defined by the suspension point (see 4.5 and

4.6) and the barrier (see 4.3).
Key
1  centre of gripping area
Figure 3 — Examples for handle distance l
4.2.2 Verification

The design, adjustment and dimensions shall be verified by inspection and measurements and function test.

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4.3 Barrier and distance to cutting attachment for brush-cutters
4.3.1 Requirements

Brush-cutters shall be equipped with a barrier to prevent an unintentional contact with the cutting attachment

during operation.

The barrier shall project at least 200 mm horizontally and perpendicularly from the centre-line of the drive shaft

tube. This function can also be performed by the handle assembly. See Figure 4.

The minimum straight line distance from the rear of the barrier (2) at a width of 200 mm (2) to the nearest

unguarded point of the cutting attachment (1) shall be at least 830 mm, where the unguarded point of the

cutting attachment is the intersection between the plane perpendicular to the cutting path and the side-edge of

the cutting-attachment guard. See Figure 4.

Barriers that are to be removed as a part of maintenance procedures, described in the instruction handbook,

shall be fixed by systems that can be opened or removed only with tools. The fixing system for barriers which

are independent from the handle assembly shall be permanently attached to the barrier and/or the machine

when the barrier is removed.
Dimensions in millimetres
≥ 883500
a) Bicycle-type handle serving as a barrier
≥ 883500
b) Front and rear handles with front handle serving as a barrier
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≥ 885300
c) Front and rear handle with separate barrier
Key
1  unguarded point of the cutting attachment
2  rear of the handle bar/barrier

Figure 4 — Example of machines with different handle configurations, barrier and distance to

cutting attachment
4.3.2 Verification

The design, adjustment and dimensions shall be verified by inspection and measurements.

4.4 Harness
4.4.1 Requirements

A double shoulder harness shall be provided for all machines exceeding a dry weight of 7,5 kg and for all brush

saws.

Brush-cutters other than brush saws having a dry weight of 7,5 kg or less and grass-trimmers having a dry

weight of 6 kg to 7,5 kg shall at least be provided with a single shoulder harness. For a grass-trimmer with a dry

weight below 6 kg, no harness is required.

The double shoulder harness shall be designed so that pressure is evenly distributed on both shoulders of the

operator. The design of the double shoulder harness shall prevent slipping in any direction and be supplied

with a hip pad.

All double shoulder harnesses shall be equipped with a quick-release mechanism positioned either at the

connection between the machine and harness or between the harness and operator. Either the design of the

harness or the use of the quick-release mechanism shall ensure that the machine can be released quickly from

the operator in the event of emergency.
The harness shall be adjustable to the size of the operator.

If a quick-release mechanism is provided, it shall be possible to open it under load and release the machine

using only one hand.
4.4.2 Verification

The type of harness and its adjustment shall be verified by inspection. The quick-release mechanism(s) shall

be checked by a function test carried out by a person wearing the harness and with a vertical load of three

times the dry weight of the machine acting on the suspension point.
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4.5 Balance
4.5.1 Requirements

4.5.1.1 All machines requiring a harness, except those described in 4.5.1.2, shall have the suspension point

(see Figure 3) adjustable so that the machine is balanced when it is suspended on this point.

Such a balanced machine, with the suspension point at a minimum vertical distance of 750 mm above the

ground, shall have:

—  for brush-cutters: a distance from the ground to the nearest point of the blade of 200 mm ± 100 mm;

—  for grass-trimmers: a distance from the ground to the nearest point of the cutting attachment of 200

+100
 mm.
− 200

The requirements shall be met with tanks that are half filled and for recommended cutting attachments.

4.5.1.2 Machines suspended with a harness, and designed to be supported by the ground shall have the

suspension point adjustable so that the ground contact force is not greater than 20 N, with tanks that are half

filled and for recommended cutting attachments.
4.5.2 Verification

The requirements of 4.5.1 shall be verified by inspection and measurement using the lightest and heaviest

recommended cutting attachments.
4.6 Cutting-attachment strength
4.6.1 Requirements

The cutting attachment, excluding flexible cutting lines, shall not break or crack when impacted once against a

steel rod of diameter 25 mm  ± 1 mm.

The same cutting attachment shall then, without any adjustments, not break or crack when operated at an

over-speed.

An exception from this second requirement is made for a single-piece metal blade. Such blades shall instead

meet the material requirements in ISO 7113:1999, Clause 5.
These requirements are applicable to all recommended cutting attachments.
4.6.2 Verification

Impact strength shall be verified by a test according to Annex A and the same cutting attachment

...

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