Machinery for forestry - Portable chain-saw safety requirements and testing - Part 2: Chain-saws for tree service (ISO 11681-2:2022)

This document specifies safety requirements and measures for verification for the design, construction,
transporting and commissioning for tree service of portable, combustion-engine, hand-held chain-saws
having a maximum mass of 4,3 kg (without the guide bar and saw-chain and with tanks empty).
The chain-saws are intended to be used, with the right hand on the rear handle and left hand on the
front handle, by a trained operator.
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 relevant
to these machines when they are used as intended and under conditions of misuse which are reasonably
foreseeable by the manufacturer (see Annex B).
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.

Forstmaschinen - Sicherheitstechnische Anforderungen und Prüfungen für tragbare Kettensägen - Teil 2: Kettensägen für die Baumpflege (ISO 11681-2:2022)

Dieses Dokument legt Sicherheitsanforderungen und Maßnahmen zur Überprüfung der Gestaltung, Konstruktion, Lagerung und Inbetriebnahme von tragbaren, handgehaltenen verbrennungsmotorisch betriebenen Kettensägen für die Baumpflege, mit einer maximalen Masse von 4,3 kg (ohne Führungsschiene oder Kette und mit leeren Tanks) fest.
Die Kettensägen sind für die Benutzung mit der rechten Hand am hinteren Griff und der linken Hand am vorderen Griff, durch einen in der Anwendung ausgebildeten Benutzer vorgesehen.
Demontage und Verschrottung des Produkts werden nicht in diesem Dokument behandelt. Methoden zur Vermeidung oder Verminderung der sich aus dem Gebrauch solcher Maschinen ergebenden Gefährdungen, und die vom Hersteller zu erbringenden Informationen für sicheres Arbeiten, die vom Hersteller zu erbringen sind, werden festgelegt.
Dieses Dokument behandelt alle signifikanten Gefährdungen, Gefährdungssituationen oder Gefährdungsereignisse, die für diese Maschinen relevant sind, sofern sie zu dem vorgesehenen Zweck und bei vernünftigerweise durch den Hersteller vorhersehbarem Missbrauch eingesetzt werden.
Dieses Dokument gilt für Kettensägen, die nach dessen Veröffentlichungsdatum hergestellt wurden.
ANMERKUNG Bild 1 zeigt ein Beispiel einer Kettensäge im Geltungsbereich dieses Dokuments.
[Bild 1]

Matériel forestier - Exigences de sécurité et essais des scies à chaîne portatives - Partie 2: Scies à chaîne pour l'élagage des arbres (ISO 11681-2:2022)

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 pour l’élagage des arbres, tenues à la main, ayant une masse maximale de 4,3 kg (guide-chaîne et chaîne non compris et réservoirs vides).
Les scies à chaîne sont prévues pour être manœuvrées avec la main droite sur la poignée arrière et la main gauche sur la poignée avant, par un opérateur.
Le démontage et la mise au rebut du produit ne sont pas couverts par le présent document.  Des méthodes pour éliminer ou réduire les dangers inhérents à l'utilisation de ces machines, ainsi que le type d'informations sur les pratiques d'utilisation sûres à fournir par le fabricant.
Le présent document traite de tous les dangers significatifs, situations dangereuses et événements dangereux pertinents pour ces machines, lorsqu'elles sont utilisées de la manière prévue et dans des conditions de mauvais usage raisonnablement prévisibles par le fabricant. (voir Annexe B)
Le présent document s’applique aux scies à chaîne fabriquées après sa date de publication.
NOTE         La Figure 1 montre un exemple de scie à chaîne conforme au domaine d’application du présent document.

Gozdarski stroji - Zahteve za varnost in preskušanje prenosnih motornih verižnih žag - 2. del: Verižne žage za nego dreves (ISO 11681-2:2022)

General Information

Status
Published
Public Enquiry End Date
30-Nov-2019
Publication Date
15-Jun-2022
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
02-Jun-2022
Due Date
07-Aug-2022
Completion Date
16-Jun-2022

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SLOVENSKI STANDARD
SIST EN ISO 11681-2:2022
01-julij-2022
Nadomešča:
SIST EN ISO 11681-2:2012
SIST EN ISO 11681-2:2012/A1:2017
Gozdarski stroji - Zahteve za varnost in preskušanje prenosnih motornih verižnih
žag - 2. del: Verižne žage za nego dreves (ISO 11681-2:2022)

Machinery for forestry - Portable chain-saw safety requirements and testing - Part 2:

Chain-saws for tree service (ISO 11681-2:2022)
Forstmaschinen - Sicherheitstechnische Anforderungen und Prüfungen für tragbare
Kettensägen - Teil 2: Kettensägen für die Baumpflege (ISO 11681-2:2022)

Matériel forestier - Exigences de sécurité et essais des scies à chaîne portatives - Partie

2: Scies à chaîne pour l'élagage des arbres (ISO 11681-2:2022)
Ta slovenski standard je istoveten z: EN ISO 11681-2:2022
ICS:
65.060.80 Gozdarska oprema Forestry equipment
SIST EN ISO 11681-2:2022 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN ISO 11681-2:2022
---------------------- Page: 2 ----------------------
SIST EN ISO 11681-2:2022
EN ISO 11681-2
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2022
EUROPÄISCHE NORM
ICS 65.060.80 Supersedes EN ISO 11681-2:2011, EN ISO 11681-
2:2011/A1:2017
English Version
Machinery for forestry - Portable chain-saw safety
requirements and testing - Part 2: Chain-saws for tree
service (ISO 11681-2:2022)

Matériel forestier - Exigences de sécurité et essais des Forstmaschinen - Sicherheitstechnische

scies à chaîne portatives - Partie 2: Scies à chaîne pour Anforderungen und Prüfung für tragbare Kettensägen -

l'élagage des arbres (ISO 11681-2:2022) Teil 2: Kettensägen für die Baumpflege (ISO 11681-

2:2022)
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 11681-2:2022 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 11681-2:2022
EN ISO 11681-2:2022 (E)
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

---------------------- Page: 4 ----------------------
SIST EN ISO 11681-2:2022
EN ISO 11681-2:2022 (E)
European foreword

This document (EN ISO 11681-2:2022) 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 11681-2:2011, EN ISO 11681-2:2011/A1:2017.

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 11681-2:2022 has been approved by CEN as EN ISO 11681-2:2022 without any

modification.
---------------------- Page: 5 ----------------------
SIST EN ISO 11681-2:2022
EN ISO 11681-2:2022 (E)
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 of Clause(s)/ subclause(s) Remarks/Notes
Directive 2006/42/EC of 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 4.17.1, 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 operation 4.2.1, 4.3.1, 4.3.2, 4.6
1.3.4. Risks due to surfaces, edges 4.9, 5.1.3
or angles
1.3.6. Risks related to variations - Not covered
in operating conditions
1.3.8. Choice of protection against 4.3.1, 4.3.2, 4.13
risks 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
---------------------- Page: 6 ----------------------
SIST EN ISO 11681-2:2022
EN ISO 11681-2:2022 (E)
1.5.3. Energy supply other than electricity 5.1.3
1.5.6. Fire 4.16, 4.17, 5.1
1.5.8. Noise 4.23, 5.1.3
1.5.9. Vibrations 4.22, 5.1.2, 5.1.3
1.5.11. External radiation 4.24
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 4.11
on the 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 Clause 5
1.7.4.1. General principles for the Clause 5
drafting of instructions
1.7.4.2. Contents of the instructions Clause 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
4.1.2.5. Lifting accessories and their 4.21, 5.1.3, 5.3, 5.5,
components Annex A

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.
---------------------- Page: 7 ----------------------
SIST EN ISO 11681-2:2022
---------------------- Page: 8 ----------------------
SIST EN ISO 11681-2:2022
INTERNATIONAL ISO
STANDARD 11681-2
Fourth edition
2022-03
Machinery for forestry — Portable
chain-saw safety requirements and
testing —
Part 2:
Chain-saws for tree service
Matériel forestier — Exigences de sécurité et essais des scies à chaîne
portatives —
Partie 2: Scies à chaîne pour l'élagage des arbres
Reference number
ISO 11681-2:2022(E)
© ISO 2022
---------------------- Page: 9 ----------------------
SIST EN ISO 11681-2:2022
ISO 11681-2:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© 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
© ISO 2022 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 11681-2:2022
ISO 11681-2:2022(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 .......................................................................................................... 4

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

4.2 Handles .......................................................................................................................................................................................................... 4

4.2.1 Requirements ........................................................................................................................................................................ 4

4.2.2 Verification .............................................................................................................................................................................. 4

4.3 Hand protection ...................................................................... ............................................................................................................... 4

4.3.1 Protection at front handle.......................................................................................................................................... 4

4.3.2 Protection at rear handle............................................................................................................................................ 5

4.4 Balance and holding moment .................................................................................................................................................... 5

4.4.1 Requirements ........................................................................................................................................................................ 5

4.4.2 Verification .............................................................................................................................................................................. 6

4.5 Protection against injury by kickback ......... ...................................................................................................................... 6

4.5.1 Chain brake ............................................................................................................................................................................. 6

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 .............................................................................................................................................................................. 7

4.7 Spiked bumper ........................................................................................................................................................................................ 7

4.7.1 Requirements ........................................................................................................................................................................ 7

4.7.2 Verification .............................................................................................................................................................................. 7

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 ................................................................................................................................................................... 8

4.11.1 Requirements ........................................................................................................................................................................ 8

4.11.2 Verification .............................................................................................................................................................................. 8

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 ........................................................................................................................................................................................................... 10

4.14.1 Requirements ..................................................................................................................................................................... 10

4.14.2 Verification ........................................................................................................................................................................... 10

4.15 Protection against contact with parts under high voltage .......................................................................... 10

4.15.1 Requirements ..................................................................................................................................................................... 10

4.15.2 Verification ........................................................................................................................................................................... 10

4.16 Protection against contact with hot parts .................................................................................................................. 10

4.16.1 Requirements ..................................................................................................................................................................... 10

iii
© ISO 2022 – All rights reserved
---------------------- Page: 11 ----------------------
SIST EN ISO 11681-2:2022
ISO 11681-2:2022(E)

4.16.2 Verification ........................................................................................................................................................................... 11

4.17 Fuel and oil systems ........................................................................................................................................................................12

4.17.1 Requirements .....................................................................................................................................................................12

4.17.2 Verification ........................................................................................................................................................................... 12

4.18 Exhaust gases ....................................................................................................................................................................................... 13

4.18.1 Requirements ..................................................................................................................................................................... 13

4.18.2 Verification ........................................................................................................................................................................... 13

4.19 Chain lubrication ............................................................................................................................................................................... 13

4.19.1 Requirements .....................................................................................................................................................................13

4.19.2 Verification ........................................................................................................................................................................... 14

4.20 Chain tensioning ................................................................................................................................................................................ 14

4.20.1 Requirements ..................................................................................................................................................................... 14

4.20.2 Verification ........................................................................................................................................................................... 14

4.21 Attachment device ........................................................................................................................................... ................................. 14

4.21.1 Requirements ..................................................................................................................................................................... 14

4.21.2 Verification ........................................................................................................................................................................... 14

4.22 Vibration ................................................................................................................................................................................................... 14

4.22.1 Reduction by design at source and by protective measures .................................................... 14

4.22.2 Vibration measurement ............................................................................................................................................ 14

4.23 Noise ............................................................................................................................................................................................................. 15

4.23.1 Reduction by design at source and by protective measures ....................................................15

4.23.2 Noise measurement ......................................................................................................................................................15

4.24 Electromagnetic immunity ......................................................................................................................................................15

4.24.1 Requirements ..................................................................................................................................................................... 15

4.24.2 Verification ........................................................................................................................................................................... 15

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

5.1 Instructions ............................................................................................................................................................................................ 15

5.1.1 General .....................................................................................................................................................................................15

5.1.2 Technical data .................................................................................................................................................................... 15

5.1.3 Other information .......................................................................................................................................................... 16

5.2 Marking ...................................................................................................................................................................................................... 18

5.3 Warnings ................................................................................................................................................................................................... 19

5.4 Test of labels .......................................................................................................................................................................................... 20

5.4.1 Preparation of test specimens and control specimens .................................................................20

5.4.2 Wipe resistance test ..................................................................................................................................................... 21

5.4.3 Adhesion test ...................................................................................................................................................................... 21

5.5 Warning to be provided at point of sale ........................................................................................................................ 21

Annex A (informative) Working with tree service chain-saws from rope and harness ............................23

Annex B (informative) List of significant hazards .............................................................................................................................28

Bibliography .............................................................................................................................................................................................................................30

© ISO 2022 – All rights reserved
---------------------- Page: 12 ----------------------
SIST EN ISO 11681-2:2022
ISO 11681-2:2022(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 shoul
...

SLOVENSKI STANDARD
oSIST prEN ISO 11681-2:2019
01-november-2019
Gozdarski stroji - Zahteve za varnost in preskušanje prenosnih motornih verižnih
žag - 2. del: Verižne žage za nego dreves (ISO/DIS 11681-2:2019)

Machinery for forestry - Portable chain-saw safety requirements and testing - Part 2:

Chain-saws for tree service (ISO/DIS 11681-2:2019)
Forstmaschinen - Sicherheitstechnische Anforderungen und Prüfungen für tragbare
Kettensägen - Teil 2: Kettensägen für die Baumpflege (ISO/DIS 11681-2:2019)

Matériel forestier - Exigences de sécurité et essais des scies à chaîne portatives - Partie

2: Scies à chaîne pour l'élagage des arbres (ISO/DIS 11681-2:2019)
Ta slovenski standard je istoveten z: prEN ISO 11681-2
ICS:
65.060.80 Gozdarska oprema Forestry equipment
oSIST prEN ISO 11681-2:2019 en,fr,de

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

---------------------- Page: 1 ----------------------
oSIST prEN ISO 11681-2:2019
---------------------- Page: 2 ----------------------
oSIST prEN ISO 11681-2:2019
DRAFT INTERNATIONAL STANDARD
ISO/DIS 11681-2
ISO/TC 23/SC 17 Secretariat: SIS
Voting begins on: Voting terminates on:
2019-09-11 2019-12-04
Machinery for forestry — Portable chain-saw safety
requirements and testing —
Part 2:
Chain-saws for tree service

Matériel forestier — Exigences de sécurité et essais des scies à chaîne portatives —

Partie 2: Scies à chaîne pour l'élagage des arbres
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 11681-2:2019(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 2019
---------------------- Page: 3 ----------------------
oSIST prEN ISO 11681-2:2019
ISO/DIS 11681-2:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

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
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 11681-2:2019
ISO/DIS 11681-2:2019(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 ............................................................................................................ 3

4.1 General ........................................................................................................................................................................................................... 3

4.2 Handles .......................................................................................................................................................................................................... 4

4.2.1 Requirements ..................................................................................................................................................................... 4

4.2.2 Verification ............................................................................................................................................................................ 4

4.3 Hand protection ..................................................................................................................................................................................... 4

4.3.1 Protection at front handle ........................................................................................................................................ 4

4.3.2 Protection at rear handle .......................................................................................................................................... 4

4.4 Balance and holding moment ..................................................................................................................................................... 5

4.4.1 Requirements ..................................................................................................................................................................... 5

4.4.2 Verification ............................................................................................................................................................................ 5

4.5 Protection against injury by kickback ................................................................................................................................. 6

4.5.1 Chain brake ........................................................................................................................................................................... 6

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 ........................................................................................................................................................................................ 7

4.7.1 Requirements ..................................................................................................................................................................... 7

4.7.2 Verification ............................................................................................................................................................................ 7

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 ............................................................................................................................................................................ 8

4.12 Throttle control ...................................................................................................................................................................................... 8

4.12.1 Dimensions ........................................................................................................................................................................... 8

4.12.2 Operation ................................................................................................................................................................................ 8

4.12.3 Throttle control latch ................................................................................................................................................... 9

4.13 Drive sprocket guard.......................................................................................................................................................................... 9

4.13.1 Requirements ..................................................................................................................................................................... 9

4.13.2 Verification ............................................................................................................................................................................ 9

4.14 Clutch............................................................................................................................................................................................................10

4.14.1 Requirements ..................................................................................................................................................................10

4.14.2 Verification .........................................................................................................................................................................10

4.15 Protection against contact with parts under high voltage .............................................................................10

4.15.1 Requirements ..................................................................................................................................................................10

4.15.2 Verification .........................................................................................................................................................................10

4.16 Protection against contact with hot parts ....................................................................................................................10

4.16.1 Requirements ..................................................................................................................................................................10

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4.16.2 Verification .........................................................................................................................................................................10

4.17 Fuel and oil systems ........................................................................................................................................................................11

4.17.1 Requirements ..................................................................................................................................................................11

4.17.2 Verification .........................................................................................................................................................................12

4.18 Exhaust gases ........................................................................................................................................................................................13

4.18.1 Requirements ..................................................................................................................................................................13

4.18.2 Verification .........................................................................................................................................................................13

4.19 Chain lubrication ................................................................................................................................................................................13

4.19.1 Requirements ..................................................................................................................................................................13

4.19.2 Verification .........................................................................................................................................................................13

4.20 Chain tensioning .................................................................................................................................................................................13

4.20.1 Requirements ..................................................................................................................................................................13

4.20.2 Verification .........................................................................................................................................................................13

4.21 Attachment device ............................................................................................................................................................................13

4.21.1 Requirements ..................................................................................................................................................................13

4.21.2 Verification .........................................................................................................................................................................13

4.22 Vibration ....................................................................................................................................................................................................13

4.22.1 Reduction by design at source and by protective measures ...................................................13

4.22.2 Vibration measurement ..........................................................................................................................................14

4.23 Noise .............................................................................................................................................................................................................14

4.23.1 Reduction by design at source and by protective measures ...................................................14

4.23.2 Noise measurement ...................................................................................................................................................14

4.24 Electromagnetic immunity ........................................................................................................................................................14

4.24.1 Requirements ..................................................................................................................................................................14

4.24.2 Verification .........................................................................................................................................................................14

5 Information for use .........................................................................................................................................................................................14

5.1 Instruction handbook ....................................................................................................................................................................14

5.1.1 General...................................................................................................................................................................................14

5.1.2 Technical data ..................................................................................................................................................................15

5.1.3 Other information ........................................................................................................................................................15

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

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

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

5.4.1 Preparation of test specimens and control specimens ................................................................19

5.4.2 Wipe resistance test ...................................................................................................................................................19

5.4.3 Adhesion test .................. .................................................... ..............................................................................................20

Annex A (informative) Working with tree service chain-saws from rope and harness ................................21

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

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

requirements of EU Directive 2006/42/EC aimed to be covered ....................................................................29

Bibliography .............................................................................................................................................................................................................................32

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oSIST prEN ISO 11681-2:2019
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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 11681-2 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture

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

This fourth edition cancels and replaces the third edition (ISO 11681-2:2011), which has been

technically revised.
The main changes compared to the previous edition are as follows:
— Normative references
— Kickback (clarification of requirements)
— Throttle control (verification of requirements)
— Fuel line strength and accessibility
— Information for use - Technical data
— Instruction handbook – Safe starting procedure

ISO 11681 consists of the following parts, under the general title Machinery for forestry — Portable

chain-saw safety requirements and testing:
— Part 1: Chain-saws for forest service
— Part 2: Chain-saws for tree service
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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.
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oSIST prEN ISO 11681-2:2019
DRAFT INTERNATIONAL STANDARD ISO/DIS 11681-2:2019(E)
Machinery for forestry — Portable chain-saw safety
requirements and testing —
Part 2:
Chain-saws for tree service
1 Scope

This part of ISO 11681 gives safety requirements and measures for their verification for the design

and construction for tree service of portable, combustion-engine, hand-held chain-saws having a

maximum mass — without guide bar and saw chain and with tanks empty — of 4,3 kg, intended to be

used, with the right hand on the rear handle and left hand on the front handle, by a trained operator,

having read and understood the safety requirements provided in the instruction handbook, for pruning

and dismantling standing tree crowns, using the appropriate personal protective equipment (PPE).

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 11681 deals with all significant hazards, hazardous situations and hazardous events

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

reasonably foreseeable by the manufacturer.
NOTE See Annex B for a list of significant hazards.

This part of ISO 11681 is applicable to chain-saws 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.
ISO 6531:2017, Machinery for forestry — Portable chain-saws — Vocabulary

ISO 6533, Forestry machinery — Portable chain-saw front hand-guard — Dimensions and clearances

ISO 6534, Forestry machinery — Portable chain-saw hand-guards — Mechanical strength

ISO 6535, Portable chain-saws — Chain brake performance

ISO 7293, Forestry machinery — Portable chain saws — Engine performance and fuel consumption

ISO 7914:2002, Forestry machinery — Portable chain-saws — Minimum handle clearance and sizes

ISO 7915, Forestry machinery — Portable chain-saws — Determination of handle strength

ISO 8334, Forestry machinery — Portable chain-saws — Determination of balance and maximum

holding moment
ISO 9518, Forestry machinery — Portable chain-saws — Kickback test

ISO 10726, Portable chain saws — Chain catcher — Dimensions and mechanical strength

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

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ISO 13772, Forestry machinery — Portable chain-saws — Non-manually actuated chain brake performance

ISO 13849-1:2015, Safety of machinery — Safety-related parts of control systems — Part 1: General

principles for design

ISO 13849-2, Safety of machinery — Safety-related parts of control systems — Part 2: Validation

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 61032:1997, Protection of Persons and Equipment by Enclosure – Probes for Verification

ISO 7010, Graphical symbols – Safety colours and safety signs – Registered safety signs

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 6531 and ISO 12100 apply.

Note 1 to entry Figure 1 shows an example of a chain-saw within the scope of this part of ISO 11681.

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oSIST prEN ISO 11681-2:2019
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Key
1 rear handle 7 guide bar
2 throttle trigger lock-out 8 spiked bumper
3 throttle trigger 9 chain catcher
4 front handle 10 stopping device
5 front hand guard 11 attachment point
6 guide-bar cover 12 saw chain
Figure 1 — Example of chain-saw
3.1
trained operator
person who has competence and knowledge in

— the use of, and particular hazards associated with using, a chain-saw (for tree service work)

manufactured in accordance with the provisions of this part of ISO 11681, and

— the precautions to be taken to limit these hazards, including the wearing of the recommended

personal protective equipment (PPE)
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 11681.

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 part of ISO 11681, the safety distances specified in

ISO 13857:2008, 4.2.4.1 and 4.2.4.3, shall be met.
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4.2 Handles
4.2.1 Requirements
Chain-saws sha
...

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