prEN ISO 11806-1

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/DIS 11806-1:2020)

Land- und forstwirtschaftliche Maschinen - Sicherheitstechnische Anforderungen und Prüfung für tragbare handgehaltene motorbetriebene Freischneider und Grastrimmer - Teil 1: Maschinen mit Antrieb durch integrierten Verbrennungsmotor (ISO/DIS 11806-1:2020)

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 C 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/DIS 11806-1:2020)

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/DIS 11806-1:2020)

General Information

• Status: Not Published
• ICS: 65.060.80 - Forestry equipment
• Technical Committee: CEN/TC 144 - Tractors and machinery for agriculture and forestry
• Drafting Committee: CEN/TC 144/WG 6 - Manually portable forestry machinery
• Current Stage: 4599 - Dispatch of FV draft to CMC - Finalization for Vote
• Due Date: 26-Jan-2021
• Completion Date: 26-Jan-2021
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Mandate: M/396 - Mandate to CEN and Cenelec for standardisation in the field of machinery
• Ref Project: oSIST prEN ISO 11806-1:2020 - 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/DIS 11806-1:2020)

RELATIONS

• Revised: EN ISO 11806-1:2011 - 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)
• Effective Date: 18-Apr-2018

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN ISO 11806-1:2020
01-september-2020

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/DIS 11806-1:2020)

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/DIS 11806-1:2020)

Land- und forstwirtschaftliche Maschinen - Sicherheitstechnische Anforderungen und

Prüfung für tragbare handgehaltene motorbetriebene Freischneider und Grastrimmer -

Teil 1: Maschinen mit Antrieb durch integrierten Verbrennungsmotor (ISO/DIS 11806-

1:2020)

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/DIS 11806-1:2020)
Ta slovenski standard je istoveten z: prEN ISO 11806-1
ICS:
65.060.80 Gozdarska oprema Forestry equipment
oSIST prEN ISO 11806-1:2020 en,fr,de

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

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oSIST prEN ISO 11806-1:2020
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oSIST prEN ISO 11806-1:2020
DRAFT INTERNATIONAL STANDARD
ISO/DIS 11806-1
ISO/TC 23/SC 17 Secretariat: SIS
Voting begins on: Voting terminates on:
2020-06-18 2020-09-10
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
ICS: 65.060.80
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 11806-1:2020(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2020
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oSIST prEN ISO 11806-1:2020
ISO/DIS 11806-1:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

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ISO copyright office
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Published in Switzerland
ii © ISO 2020 – All rights reserved
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oSIST prEN ISO 11806-1:2020
ISO/DIS 11806-1:2020(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

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

4.2.1 Requirements ..................................................................................................................................................................... 5

4.2.2 Verification ............................................................................................................................................................................ 6

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

4.3.1 Requirements ..................................................................................................................................................................... 6

4.3.2 Verification ............................................................................................................................................................................ 7

4.4 Harness .......................................................................................................................................................................................................... 8

4.4.1 Requirements ..................................................................................................................................................................... 8

4.4.2 Verification ............................................................................................................................................................................ 8

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

4.5.1 Requirements ..................................................................................................................................................................... 8

4.5.2 Verification ............................................................................................................................................................................ 9

4.6 Cutting-attachment strength ...................................................................................................................................................... 9

4.6.1 Requirements ..................................................................................................................................................................... 9

4.6.2 Verification ............................................................................................................................................................................ 9

4.7 Cutting-attachment retention .................................................................................................................................................... 9

4.7.1 Requirements ..................................................................................................................................................................... 9

4.7.2 Verifications ......................................................................................................................................................................... 9

4.8 Cutting-attachment guards .......................................................................................................................................................10

4.8.1 Requirements ..................................................................................................................................................................10

4.8.2 Verification .........................................................................................................................................................................10

4.9 Transport cover ...................................................................................................................................................................................10

4.9.1 Requirements ..................................................................................................................................................................10

4.9.2 Verification .........................................................................................................................................................................10

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

4.10.1 Requirements ..................................................................................................................................................................10

4.10.2 Verification .........................................................................................................................................................................11

4.11 Engine starting device ...................................................................................................................................................................11

4.11.1 Requirements ..................................................................................................................................................................11

4.11.2 Verification .........................................................................................................................................................................11

4.12 Engine stopping device .................................................................................................................................................................11

4.12.1 Requirements ..................................................................................................................................................................11

4.12.2 Verification .........................................................................................................................................................................11

4.13 Throttle control ...................................................................................................................................................................................11

4.13.1 Position .................................................................................................................................................................................11

4.13.2 Operation .............................................................................................................................................................................11

4.13.3 Throttle lock .....................................................................................................................................................................13

4.14 Clutch............................................................................................................................................................................................................14

4.14.1 Requirements ..................................................................................................................................................................14

4.14.2 Verification .........................................................................................................................................................................14

4.15 Tanks .............................................................................................................................................................................................................14

4.15.1 Operation .............................................................................................................................................................................14

4.15.2 Fuel tank structural integrity .............................................................................................................................15

4.15.3 Fuel feed line strength and accessibility ..................................................................................................15

4.16 Protection against contact with parts of the machine under high voltage ......................................15

4.16.1 Requirements ..................................................................................................................................................................15

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oSIST prEN ISO 11806-1:2020
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4.16.2 Verification .........................................................................................................................................................................15

4.17 Protection against contact with hot parts ....................................................................................................................15

4.17.1 Requirements ..................................................................................................................................................................15

4.17.2 Verification .........................................................................................................................................................................15

4.18 Exhaust gases ........................................................................................................................................................................................16

4.18.1 Requirement .....................................................................................................................................................................16

4.18.2 Verification .........................................................................................................................................................................16

4.19 Vibration ....................................................................................................................................................................................................17

4.19.1 Reduction by design at source and by protective measures ...................................................17

4.19.2 Vibration measurement ..........................................................................................................................................17

4.20 Noise .............................................................................................................................................................................................................17

4.20.1 Reduction by design at source and by protective measures ...................................................17

4.20.2 Noise measurement ...................................................................................................................................................17

4.21 Electromagnetic immunity ........................................................................................................................................................17

4.21.1 Requirements ..................................................................................................................................................................17

4.21.2 Verification .........................................................................................................................................................................17

5 Information for use .........................................................................................................................................................................................18

5.1 Instruction handbook ....................................................................................................................................................................18

5.1.1 General...................................................................................................................................................................................18

5.1.2 Technical data ..................................................................................................................................................................18

5.1.3 Other information ........................................................................................................................................................18

5.2 Marking ......................................................................................................................................................................................................20

5.3 Warnings ...................................................................................................................................................................................................21

5.4 Test of labels ...........................................................................................................................................................................................22

5.4.1 Preparation of test specimens and control specimens ................................................................22

5.4.2 Wipe resistance test ...................................................................................................................................................22

5.4.3 Adhesion test .................. .................................................... ..............................................................................................23

Annex A (normative) Cutting-attachment impact and spin test ...........................................................................................24

Annex B (normative) Thrown objects test ...................................................................................................................................................27

Annex C (informative) List of significant hazards ................................................................................................................................32

Annex D (normative) Structural Integrity of Fuel Tanks ..............................................................................................................34

Annex E (normative) Fuel Supply Line Strength and Accessibility ....................................................................................35

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

requirements of Directive 2006/42/EC aimed to be covered ............................................................................36

Bibliography .............................................................................................................................................................................................................................42

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oSIST prEN ISO 11806-1:2020
ISO/DIS 11806-1:2020(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.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

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. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture

and forestry, Subcommittee SC 17, Manually portable forest machinery.

This second edition of ISO 11806-1 cancels and replaces ISO 11806:2011, of which it is also a technical

revision.
The main changes compared to the previous edition are as follows:

— Addition of a force requirement in the throttle trigger lock-out performance test.

— Addition of fuel tank and fuel line integrity test requirements.
A list of all parts in the ISO 11806 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
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oSIST prEN ISO 11806-1:2020
ISO/DIS 11806-1:2020(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.
vi © ISO 2020 – All rights reserved
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oSIST prEN ISO 11806-1:2020
DRAFT INTERNATIONAL STANDARD ISO/DIS 11806-1:2020(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 documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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.

ANSI/UL 969-2018, Standard for Marking and Labeling Systems

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

steels, Table 3

ISO 7112:2019, 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 7918:1995, Forestry machinery — Portable brush-cutters and grass-trimmers — Cutting attachment

guard dimensions

ISO 8380:1993, Forestry machinery — Portable brush-cutters and grass-trimmers — Cutting attachment

guard strength

ISO 8893:1997, Forestry machinery — Portable brush-cutters and grass-trimmers — Engine performance

and fuel consumption
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oSIST prEN ISO 11806-1:2020
ISO/DIS 11806-1:2020(E)

ISO/TR 11688-1:1995, 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 13857:2019, 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 22867:2011, Forestry and gardening machinery — Vibration test code for portable hand-held

machines with internal combustion engine — Vibration at the handles

ISO 22868:2020, Forestry and gardening machinery — Noise test code for portable hand-held machines

with internal combustion engine — Engineering method (Grade 2 accuracy)

IEC 61032:1997, Protection of persons and equipment by enclosures – Probes for verification

3 Terms and definitions
For the purposes of this document, the following apply:

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp

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
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oSIST prEN ISO 11806-1:2020
ISO/DIS 11806-1:2020(E)
Key
1 throttle trigger lock-out
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
13 choke
Figure 1 — Brush-cutter with integral power source
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oSIST prEN ISO 11806-1:2020
ISO/DIS 11806-1:2020(E)
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.
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oSIST prE
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