EN ISO 11681-1:2022
(Main)Machinery for forestry - Portable chain-saw safety requirements and testing - Part 1: Chain-saws for forest service (ISO 11681-1:2022)
Machinery for forestry - Portable chain-saw safety requirements and testing - Part 1: Chain-saws for forest service (ISO 11681-1:2022)
This document specifies safety requirements and measures for verification for the design, construction, transporting and commissioning of portable, combustion-engine, hand-held chain-saws. The chain-saws are intended to be used for forest work by only one operator, with the right hand on the rear handle and left hand on the front handle.
Dismantling and scrapping of the product is not covered by this document. 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 document deals with all significant hazards, hazardous situations and hazardous events, with the exception of kickback and balance for machines with an engine displacement of more than 80 cm3, relevant to these machines when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer (see Annex A).
This document is applicable to chain-saws manufactured after its date of publication.
Forstmaschinen - Sicherheitstechnische Anforderungen und Prüfung für tragbare Kettensägen - Teil 1: Kettensägen für die Waldarbeit (ISO 11681-1:2022)
Dieses Dokument legt die sicherheitstechnischen Anforderungen und Maßnahmen zur Feststellung deren Übereinstimmung für die Gestaltung, Konstruktion, Transport und Inbetriebnahme von tragbaren, handgehaltenen Kettensägen mit Antrieb durch Verbrennungsmotor fest. Die Kettensägen sind für den Einmannbetrieb bei der Waldarbeit durch Personen mit der rechten Hand am hinteren Handgriff und der linken Hand am vorderen Handgriff vorgesehen.
Demontage und Verschrottung des Produkts werden nicht in diesem Dokument behandelt. Verfahren zur Vermeidung oder Verminderung der sich aus dem Gebrauch dieser Maschinen ergebenden Gefährdungen sowie Informationen über sicheres Arbeiten, die vom Hersteller zur Verfügung zu stellen sind, werden festgelegt.
Dieses Dokument behandelt alle signifikanten Gefährdungen, Gefährdungssituationen oder Gefährdungs-ereignisse, die für diese Maschinen relevant sind, mit Ausnahme von Rückschlag und Gleichgewicht für Maschinen mit einem Hubraum über 80 cm3, sofern sie zu dem vorgegebenen Zweck und bei vernünftigerweise durch den Hersteller vorhersehbarem Missbrauch eingesetzt werden (siehe Anhang A).
Dieses Dokument ist nicht anzuwenden für Kettensägen, die nach dessen Ausgabedatum hergestellt worden sind.
ANMERKUNG Bild 1 zeigt ein Beispiel einer Kettensäge, die in den Anwendungsbereich dieses Dokuments fällt.
Matériel forestier - Exigences de sécurité et essais des scies à chaîne portatives - Partie 1: Scies à chaîne pour travaux forestiers (ISO 11681-1:2022)
Le présent document spécifie les exigences de sécurité et les mesures pour leur vérification, pour la conception la construction, le transport et la mise en service des scies à chaîne portatives à moteur à combustion interne. Les scies à chaîne sont destinées à être utilisées pour les travaux forestiers par un seul opérateur, la main droite sur la poignée arrière et la main gauche sur la poignée avant.
Le démontage et la mise au rebut du produit ne sont pas couverts par le présent document. Les méthodes d'élimination ou de réduction des risques découlant de l'utilisation de ces machines et le type d'informations sur les pratiques de travail sûres à fournir par le fabricant sont spécifiés.
Le présent document traite de tous les dangers significatifs, situations dangereuses ou événements dangereux pertinents pour ces machines, à l'exception du rebond et de l'équilibre pour les machines de cylindrée supérieure à 80 cm3, lorsqu'elles sont utilisées normalement et dans des conditions de mauvais usage raisonnablement prévisibles par le fabricant (voir Annexe A).
Le présent document s’applique aux scies à chaîne fabriquées après sa date de publication.
Gozdarski stroji - Zahteve za varnost in preskušanje prenosnih motornih verižnih žag - 1. del: Žage za nego gozda (ISO 11681-1:2022)
Ta dokument določa varnostne zahteve in ukrepe za preverjanje za zasnovo, konstrukcijo, prevažanje in usposobitev za zagon prenosnih, ročnih verižnih žag z notranjim izgorevanjem. Verižne žage so namenjene uporabi pri gozdarskih delih, pri čemer jih upravlja samo en upravljavec, ki ima desno roko na zadnjem
ročaju in levo roko na sprednjem ročaju.
Ta dokument ne zajema razstavljanja in razreza izdelka. Določene 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 dokument obravnava vsa večja tveganja, nevarne situacije in nevarne dogodke v zvezi s temi stroji, razen vzvratnega sunka in ravnotežja za stroje s prostornino, večjo od 80 cm3, kadar se uporabljajo v skladu z njihovim namenom in pod pogoji razumno predvidljive nepravilne uporabe, ki jih
določa proizvajalec (glej dodatek A).
Ta dokument se uporablja za verižne žage, izdelane po datumu njegove izdaje.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2022
Nadomešča:
SIST EN ISO 11681-1:2012
Gozdarski stroji - Zahteve za varnost in preskušanje prenosnih motornih verižnih
žag - 1. del: Žage za nego gozda (ISO 11681-1:2022)
Machinery for forestry - Portable chain-saw safety requirements and testing - Part 1:
Chain-saws for forest service (ISO 11681-1:2022)
Forstmaschinen - Sicherheitstechnische Anforderungen und Prüfung für tragbare
Kettensägen - Teil 1: Kettensägen für die Waldarbeit (ISO 11681-1:2022)
Matériel forestier - Exigences de sécurité et essais des scies à chaîne portatives - Partie
1: Scies à chaîne pour travaux forestiers (ISO 11681-1:2022)
Ta slovenski standard je istoveten z: EN ISO 11681-1:2022
ICS:
65.060.80 Gozdarska oprema Forestry equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 11681-1
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2022
EUROPÄISCHE NORM
ICS 65.060.80 Supersedes EN ISO 11681-1:2011
English Version
Machinery for forestry - Portable chain-saw safety
requirements and testing - Part 1: Chain-saws for forest
service (ISO 11681-1:2022)
Matériel forestier - Exigences de sécurité et essais des Forstmaschinen - Sicherheitstechnische
scies à chaîne portatives - Partie 1: Scies à chaîne pour Anforderungen und Prüfung für tragbare Kettensägen -
travaux forestiers (ISO 11681-1:2022) Teil 1: Kettensägen für die Waldarbeit (ISO 11681-
1:2022)
This European Standard was approved by CEN on 16 January 2022.
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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11681-1:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of EU Directive 2006/42/EC aimed to be covered . 4
European foreword
This document (EN ISO 11681-1:2022) 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 November 2022, and conflicting national standards
shall be withdrawn at the latest by November 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 11681-1:2011.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s) / Regulation(s).
For the relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral
part of this document.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 11681-1:2022 has been approved by CEN as EN ISO 11681-1:2022 without any
modification.
Annex ZA
(informative)
Relationship between this European Standard and the essential
requirements of EU Directive 2006/42/EC aimed to be covered
This European Standard has been prepared under a Commission’s standardization request “M/396
mandate to CEN and CENELEC for Standardization in the field of machinery” to provide one voluntary
means of conforming to essential requirements of Directive 2006/42/EC of the European Parliament
and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC.
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZA.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding essential requirements
of that Directive and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and Annex I of Directive
2006/42/EC
The relevant essential requirements Clause(s)/ subclause(s) of Remarks/Notes
of Directive 2006/42/EC this EN
1.1.2. Principles of safety integration 4.1, 5.1.2, 5.1.3, 5.3
1.1.3. Materials and products 4.17, 4.18, 5.1.3
1.1.5. Design of machinery to facilitate 4.2.1, 4.3.2, 4.4
its handling
1.1.6. Ergonomics 4.2, 4.3, 4.4, 4.7, 4.11, 4.12,
4.18, 5.1.3
1.1.7. Operating positions 5.1.3
1.2.1. Safety and reliability of control 4.10, 4.11, 4.12, 4.19
systems
1.2.2. Control devices 4.5.1, 4.10, 4.11, 4.12, 5.1.3
1.2.3. Starting 4.10
1.2.4.1. Normal stop 4.11
1.3.2. Risk of break-up during 4.2.1, 4.3.1, 4.3.2, 4.6
operation
1.3.4. Risks due to surfaces, edges or 4.9, 5.1.3
angles
1.3.6. Risks related to variations in - Not covered
operating conditions
1.3.8. Choice of protection against risks 4.3.1, 4.3.2, 4.13
arising from moving parts
1.3.9. Risks of uncontrolled movements 4.14
1.4.1. General requirements 4.3.1, 4.3.2, 4.13
1.4.2.1. Fixed guards 4.3.1, 4.3.2, 4.13
1.5.1. Electricity supply 4.15
1.5.3. Energy supply other than 5.1.3
electricity
1.5.6. Fire 4.16, 4.17, 5.1
1.5.8. Noise 4.22, 5.1.3
1.5.9. Vibrations 4.21, 5.1.2, 5.1.3
1.5.11. External radiation 4.23
1.5.13. Emissions of hazardous 4.8, 4.18, 5.1.3
materials and substances
1.6.1. Machinery maintenance - Not covered
1.6.3. Isolation of energy sources - Not covered
1.7. Information 5.1.3
1.7.1. Information and warnings on the 4.11
machinery
1.7.1.1. Information and information 5.2
devices
1.7.2. Warning of residual risks 5.2, 5.3
1.7.3. Marking of machinery 5.2
1.7.4. Instructions 5
1.7.4.1. General principles for the 5
drafting of instructions
1.7.4.2. Contents of the instructions 5 1.7.4.2 (u):
This standard does not
provide presumption of
conformity regarding the
declaration of sound power
level
1.7.4.3. Sales literature - Not covered
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
INTERNATIONAL ISO
STANDARD 11681-1
Fourth edition
2022-03
Machinery for forestry — Portable
chain-saw safety requirements and
testing —
Part 1:
Chain-saws for forest service
Matériel forestier — Exigences de sécurité et essais des scies à chaîne
portatives —
Partie 1: Scies à chaîne pour travaux forestiers
Reference number
ISO 11681-1:2022(E)
ISO 11681-1:2022(E)
© ISO 2022
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 below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 11681-1:2022(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 3
4 Safety requirements and/or protective measures . 3
4.1 General . 3
4.2 Handles . 3
4.2.1 Requirements . 3
4.2.2 Verification . 3
4.3 Hand protection . . 4
4.3.1 Protection at front handle. 4
4.3.2 Protection at the rear handle . 4
4.4 Balance . 5
4.4.1 Requirements . 5
4.4.2 Verification . 5
4.5 Protection against injury by kickback . . 5
4.5.1 Chain brake . 5
4.5.2 Non-manual chain brake . 6
4.5.3 Kickback and chain stop angles . 6
4.6 Chain catcher. 6
4.6.1 Requirements . 6
4.6.2 Verification . 6
4.7 Spiked bumper . 6
4.7.1 Requirements . 6
4.7.2 Verification . 6
4.8 Chip discharge. 7
4.8.1 Requirements . 7
4.8.2 Verification . 7
4.9 Guide bar cover . 7
4.9.1 Requirements . 7
4.9.2 Verification . 7
4.10 Engine starting device . 7
4.10.1 Requirements . 7
4.10.2 Verification . 7
4.11 Engine stopping device . 7
4.11.1 Requirements . 7
4.11.2 Verification . 7
4.12 Throttle control system . 8
4.12.1 Dimensions . 8
4.12.2 Operation . 8
4.12.3 Throttle control latch . 9
4.13 Drive sprocket guard . 10
4.13.1 Requirements . 10
4.13.2 Verification . 10
4.14 Clutch . 11
4.14.1 Requirements . 11
4.14.2 Verification . 11
4.15 Protection against contact with parts under high voltage . 11
4.15.1 Requirements . 11
4.15.2 Verification . 11
4.16 Protection against contact with hot parts . 11
4.16.1 Requirements . 11
iii
ISO 11681-1:2022(E)
4.16.2 Verification . 13
4.17 Fuel and oil systems . 14
4.17.1 Requirements . 14
4.17.2 Verification . 14
4.18 Exhaust gases . 15
4.18.1 Requirements . 15
4.18.2 Verification . 15
4.19 Chain lubrication . 15
4.19.1 Requirements .15
4.19.2 Verification . 16
4.20 Chain tensioning . 16
4.20.1 Requirements . 16
4.20.2 Verification . 16
4.21 Vibration . 16
4.21.1 Reduction by design at source and by protective measures . 16
4.21.2 Vibration measurement . 16
4.22 Noise . 16
4.22.1 Reduction by design at source and by protective measures . 16
4.22.2 Noise measurement . 17
4.23 Electromagnetic immunity . 17
4.23.1 Requirements . 17
4.23.2 Verification . 17
5 Information for use .17
5.1 Instructions . 17
5.1.1 General . 17
5.1.2 Technical data . 17
5.1.3 Other information . 18
5.2 Marking . 20
5.3 Warnings . 21
5.4 Test of labels . 21
5.4.1 Preparation of test specimens and control specimens . 21
5.4.2 Wipe resistance test . 22
5.4.3 Adhesion test . 22
Annex A (informative) List of significant hazards .23
Bibliography .25
iv
ISO 11681-1:2022(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 (hand-held) powered lawn and garden equipment and
forest machinery, in collaboration with the European Committee for Standardization (CEN) Technical
Committee CEN/TC 144, Tractors and machinery for agriculture and forestry, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This fourth edition cancels and replaces the third edition (ISO 11681-1:2011), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— the normative references in Clause 2 have been updated;
— requirements for kickback in 4.5.3.1 have been clarified;
— requirements and verification for throttle control system in 4.12 have been updated;
— a new subclause, 4.17.2.3 “Fuel feed lines strength and accessibility” has been added;
— 5.1.2 “Technical data”, has been updated;
— in 5.1.3, information on safe starting procedure has been added.
A list of all parts in the ISO 11681 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.
v
ISO 11681-1:2022(E)
Introduction
This document is a type-C standard as stated in ISO 12100:2010.
This document is of relevance, in particular, for the following stakeholder groups representing the
market players with regard to machinery safety: players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organizations, market surveillance, etc.).
Others can be affected by the level of machinery safety achieved with the means of the document by the
above-mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (e.g. trade unions, organizations for people with special needs);
— service providers, e.g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting
process of this document.
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
INTERNATIONAL STANDARD ISO 11681-1:2022(E)
Machinery for forestry — Portable chain-saw safety
requirements and testing —
Part 1:
Chain-saws for forest service
1 Scope
This document specifies safety requirements and measures for verification for the design, construction,
transporting and commissioning of portable, combustion-engine, hand-held chain-saws. The chain-
saws are intended to be used for forest work by only one operator, with the right hand on the rear
handle and left hand on the front handle.
Dismantling and scrapping of the product is not covered by this document. 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 document deals with all significant hazards, hazardous situations and hazardous events, with
the exception of kickback and balance for machines with an engine displacement of more than 80 cm ,
relevant to these machines when they are used as intended and under conditions of misuse which are
reasonably foreseeable by the manufacturer (see Annex A).
This document is applicable to chain-saws manufactured after its date of publication.
NOTE Figure 1 shows an example of a chain-saw within the scope of this document.
Key
1 rear hand-guard 7 spiked bumper
2 rear handle 8 guide-bar cover
3 throttle trigger 9 guide-bar
4 throttle trigger lock-out 10 saw-chain
5 front handle 11 chain catcher
6 front hand-guard
Figure 1 — Example of chain-saw
ISO 11681-1:2022(E)
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.
ISO 6531:2017, Machinery for forestry — Portable chain-saws — Vocabulary
ISO 6533:2020, Forestry machinery — Portable chain-saw front hand-guard — Dimensions and clearances
ISO 6534:2007, Forestry machinery — Portable chain-saw hand-guards — Mechanical strength
ISO 6534:2007/Amd 1:2012, Forestry machinery — Portable chain-saw hand-guards — Mechanical
strength — Amendment 1
ISO 6535:2015, Portable chain-saws — Chain brake performance
ISO 7293:2021, Forestry machinery — Portable chain saws — Engine performance and fuel consumption
ISO 7914:2002, Forestry machinery — Portable chain-saws — Minimum handle clearance and sizes
ISO 7914:2002/Amd 1:2012, Forestry machinery — Portable chain-saws — Minimum handle clearance
and sizes — Amendment 1
ISO 7915:2021, Forestry machinery — Portable chain-saws — Determination of handle strength
ISO 8334:2007, Forestry machinery — Portable chain-saws — Determination of balance and maximum
holding moment
ISO 9518:2018, Forestry machinery — Portable chain-saws — Kickback test
ISO 10726:2020, Portable chain-saws — Chain catcher — Dimensions and mechanical strength
ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 13772:2018, Forestry machinery — Portable chain-saws — Non-manually actuated chain brake
performance
ISO 13772:2018/Amd 1:2020, Forestry machinery — Portable chain-saws — Non-manually actuated chain
brake performance — Amendment 1
ISO 13849-1:2015, Safety of machinery — Safety-related parts of control systems — Part 1: General
principles for design
ISO 13849-2:2012, Safety of machinery — Safety-related parts of control systems — Part 2: Validation
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 22867:2021, Forestry and gardening machinery — Vibration test code for portable hand-held machines
with internal combustion engine — Vibration at the handles
ISO 22868:2021, 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
ISO 11681-1:2022(E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 6531:2017 and ISO 12100:2010
apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
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 12100:2010 for relevant but
not significant hazards which are not dealt with by this document.
The safe operation of a chain-saw also depends on the safe environment associated with the use of
personal protective equipment (PPE), such as gloves, slip-resistant footwear, and leg, eye, foot, hearing
and head protective equipment, as well as safe working procedures (see 5.1).
Except where otherwise specified in this document, the safety distances specified in ISO 13857:2019,
4.2.4.1 and 4.2.4.3, shall be met.
4.2 Handles
4.2.1 Requirements
Chain-saws shall have a handle for each hand. These handles shall be designed such that:
— they can be fully gripped by an operator wearing protective gloves,
— they provide the necessary sureness of grip by their shaping and surface,
— they conform to the dimensions and clearances given in ISO 7914:2002 (see also 4.12.1), and
— the strength of both handles complies with ISO 7915:2021.
Chain-saws having a system for isolating machine vibration from the handles shall be designed so that
the operator is able to stop the engine in a controlled manner with the engine stopping device (see
4.11), even in the case of failure of the vibration isolation system.
4.2.2 Verification
Dimensions shall be verified by measurement. Strength requirements shall be verified by testing in
accordance with ISO 7915:2021. The possibility of stopping the chain-saw engine when a failure has
occurred in the vibration isolation system shall be verified by inspection of the design and by functional
testing.
ISO 11681-1:2022(E)
4.3 Hand protection
4.3.1 Protection at front handle
4.3.1.1 Requirements
A hand-guard shall be fitted in the vicinity of the front handle to protect the operator’s fingers and
hand from injury through contact with the saw-chain.
The dimensions of this front hand-guard shall comply with ISO 6533:2020. Its strength shall comply
with ISO 6534:2007.
4.3.1.2 Verification
Dimensions shall be verified by measurement. Strength requirements shall be verified by testing in
accordance with ISO 6534:2007.
4.3.2 Protection at the rear handle
4.3.2.1 Requirements
A hand-guard shall be provided along the length of the right side of the bottom of the rear handle to
protect the operator’s hand from contact with a broken saw-chain.
This hand-guard shall extend from the right edge of the handle for at least 30 mm on the guide bar side
(see Figure 2) and
— at least 100 mm lengthwise from the inner rear part of the saw body (see Figure 2), or
— at least three times the diameter of 25 mm behind the throttle trigger, as defined by three cylinders
pressed together against the handle and the throttle trigger, whichever of these options is further
back.
This requirement may also be fulfilled by parts of the machine.
The strength of the rear hand-guard shall comply with ISO 6534:2007.
4.3.2.2 Verification
Dimensions shall be verified by measurement. Strength requirements shall be verified by testing in
accordance with ISO 6534:2007.
ISO 11681-1:2022(E)
Dimensions in millimetres
Figure 2 — Minimum dimensions of protection at the rear handle
4.4 Balance
4.4.1 Requirements
Chain-saws with an engine displacement of 80 cm or less shall be longitudinally balanced to within
±30° between the centreline of the guide bar and the horizontal plane.
The limit shall be met by the shortest and longest applicable guide bars.
NOTE Sufficient information to allow the setting of a limit is not available for chain-saws with an engine
displacement of more than 80 cm .
4.4.2 Verification
The angle for longitudinal balance shall be verified by functional testing in accordance with
ISO 8334:2007.
4.5 Protection against injury by kickback
4.5.1 Chain brake
4.5.1.1 Requirements
The chain-saw shall be fitted with a chain brake that can be activated manually by means of the
front hand-guard. The chain brake release force shall be between 20 N and 60 N and the direction of
movement shall be away from the operator.
The average stopping time shall not exceed 0,12 s and the maximum stopping time shall not exceed
0,15 s.
ISO 11681-1:2022(E)
4.5.1.2 Verification
The chain brake release force and stopping time shall be verified in accordance with ISO 6535:2015.
4.5.2 Non-manual chain brake
4.5.2.1 Requirements
There shall also be a non-manual chain brake system that operates the chain brake when kickback
occurs. This system shall meet the requirements for forest chain-saws given in ISO 13772:2018.
4.5.2.2 Verification
The non-manually activated chain brake system shall be verified by functional testing in accordance
with ISO 13772:2018.
4.5.3 Kickback and chain stop angles
4.5.3.1 Requirements
The following requirement is only applicable for chain-saws with an engine displacement of less than
80 cm and a guide bar length not exceeding 63 cm. At least one of the calculated kickback parameters
(CKA or CKA or CKA ) shall be less than 45°. This requirement shall be fulfilled for all guide bar
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and saw-chain combinations specified in the instructions. For definitions of the kickback parameters,
see ISO 9518:2018.
NOTE Sufficient information to allow the setting of a limit is not available for chain-saws with an engine
displacement of more than 80 cm .
4.5.3.2 Verification
CKA , CKA and CKA shall be verified by functional testing in accordance with ISO 9518:2018.
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4.6 Chain catcher
4.6.1 Requirements
The chain-saw shall be fitted with a chain catcher located, and with dimensions and strength, in
accordance with ISO 10726:2020. The chain catcher shall be replaceable.
4.6.2 Verification
Dimensions shall be verified by measurement. Strength requirements shall be verified by testing in
accordance with ISO 10726:2020. Means for replacing the chain catcher shall be verified by inspection.
4.7 Spiked bumper
4.7.1 Requirements
The chain-saw shall be equipped with a spiked bumper (see Figure 1) or shall have provision for
mounting one.
4.7.2 Verification
The presence of a spiked bumper or the provision for mounting one shall be verified by inspection.
ISO 11681-1:2022(E)
4.8 Chip discharge
4.8.1 Requirements
The chain-saw shall be so designed that wood particles are directed below the underside of the saw
when it is in an upright (cross-cutting) position.
4.8.2 Verification
The direction of the discharge of wood particles shall be verified by inspection during cross-
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