SIST EN ISO 11806-1:2012

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.

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SIST EN ISO 11806-1:2012

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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.

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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

2

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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.
3

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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.

4

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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

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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

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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

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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

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SIST EN ISO 11806-1:2012

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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

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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

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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

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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

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l
l
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).
1
1
1
1
1
1
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.
© ISO 2011 – All rights reserved  5
l

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SIST EN ISO 11806-1:2012
ISO 11806-1:2011(E)
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
1
2
a)  Bicycle-type handle serving as a barrier
≥ 883500
1
2
b)  Front and rear handles with front handle serving as a barrier
6 © ISO 2011 – All rights reserved
220000
220000

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SIST EN ISO 11806-1:2012
ISO 11806-1:2011(E)
≥ 885300
1
2
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.
© ISO 2011 – All rights reserved  7
220000

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SIST EN ISO 11806-1:2012
ISO 11806-1:2011(E)
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
...