SIST EN ISO 11681-2:2012
(Main)Machinery for forestry - Portable chain-saw safety requirements and testing - Part 2: Chain-saws for tree service (ISO 11681-2:2011)
Machinery for forestry - Portable chain-saw safety requirements and testing - Part 2: Chain-saws for tree service (ISO 11681-2:2011)
ISO 11681-2:2011 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 or 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 for pruning and dismantling standing tree crowns, and by persons having read and understood the safety requirements provided in the instruction handbook, 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.
ISO 11681-2:2011 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.
Forstmaschinen - Sicherheitstechnische Anforderungen und Prüfungen für tragbare Kettensägen - Teil 2: Kettensägen für die Baumpflege (ISO 11681-2:2011)
Dieser Teil von ISO 11681 spezifiziert die signifikanten Gefährdungen und sicherheitstechnischen Anforderungen und deren Feststellung der Übereinstimmung für die Gestaltung und die Konstruktion von tragbaren, handgehaltenen Kettensägen mit Antrieb durch Verbrennungsmotor für die Baumpflege mit einer maximalen Masse ohne Führungsschiene und Kette und mit leeren Tanks bis 4,3 kg einschließlich, die für einen in der Anwendung ausgebildeten Benutzer zum Entasten und Absägen stehender Baumkronen ausgelegt sind.
Er legt Verfahren zur Vermeidung oder Verminderung der sich aus ihrem Gebrauch ergebenden Gefähr¬dungen fest. Außerdem enthält er Informationen über sicheres Arbeiten, die vom Hersteller zur Verfügung zu stellen sind.
Dieses Dokument behandelt alle signifikanten Gefährdungen, Gefährdungssituationen oder Gefährdungs-ereignisse für diese Maschinen, auch wenn sie unter dem vorgegebenen Zweck und bei vernünftigerweise vorhersehbarem Missbrauch eingesetzt werden.
ANMERKUNG Siehe Anhang C zur Liste der signifikanten Gefährdungen.
Die von diesem Teil der ISO 11681 erfassten Kettensägen sind bestimmt für Arbeiten mit der rechten Hand am hinteren Handgriff und der linken Hand am vorderen Handgriff durch Personen, die die Sicherheits-anweisungen in der Betriebsanleitung gelesen und verstanden haben und entsprechende persönliche Schutzkleidung (PSA) tragen.
Dieser Teil der ISO 11681 gilt nicht für Kettensägen, die vor dem Ausgabedatum dieser Norm hergestellt wurden.
Matériel forestier - Exigences de sécurité et essais des scies à chaîne portatives - Partie 2: Scies à chaîne pour l'élagage des arbres (ISO 11681-2:2011)
L'ISO 11681-2:2011 spécifie les exigences de sécurité et les mesures pour leur vérification, pour la conception et la construction 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), prévues pour être manoeuvrées avec la main droite sur la poignée arrière et la main gauche sur la poignée avant, par un opérateur qualifié pour la taille, l'élagage et la coupe des parties supérieures (houppier) des arbres sur pied et par des personnes qui ont lu et compris les exigences de sécurité de la notice d'instructions et qui utilisent l'équipement de protection individuelle (EPI) approprié. Elle spécifie des méthodes pour éliminer ou réduire les phénomènes dangereux inhérents à l'utilisation de ces machines et le type d'informations devant être fournies par le fabricant sur les pratiques d'utilisation sûre.
L'ISO 11681-2:2011 traite de tous les phénomènes dangereux significatifs, situations dangereuses ou événements dangereux pertinents pour ces machines, lorsqu'elles sont utilisées normalement et dans des conditions de mauvais usage raisonnablement prévisibles par le fabricant.
Gozdarski stroji - Zahteve za varnost in preskušanje prenosnih motornih verižnih žag - 2. del: Žage za nego dreves (ISO 11681-2:2011)
Ta del standarda ISO 11681 določa varnostne zahteve in ukrepe za njihovo preverjanje za zasnovo in konstrukcijo prenosnih, ročnih verižnih žag z notranjim izgorevanjem za nego dreves z največjo maso 4,3 kg (vodilo ali veriga žage ni všteta, rezervoarji pa so prazni), ki jih z desno roko na desnem ročaju in levo roko na sprednjem ročaju uporabljajo usposobljeni upravljavci za obrezovanje in razrez stoječih drevesnih krošenj in osebe, ki so prebrale in razumele varnostne zahteve v uporabniškem priročniku ter uporabljajo ustrezno osebno zaščitno opremo (PPE). Predpisane so metode za odpravljanje ali zmanjšanje tveganj, ki izhajajo iz uporabe teh strojev, in vrsta informacij o varnih delovnih praksah, ki jih mora zagotoviti proizvajalec. Ta del standarda ISO 11681 opisuje vsa večja tveganja, nevarne situacije in nevarne dogodke v zvezi s temi stroji, kadar se uporabljajo v skladu z njihovim namenom in pod pogoji pričakovane nepravilne uporabe, ki jih določa proizvajalec. Ta del standarda ISO 11681 se uporablja za verižne žage, izdelane po datumu njegove izdaje.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 11681-2:2012
01-marec-2012
1DGRPHãþD
SIST EN ISO 11681-2:2009
Gozdarski stroji - Zahteve za varnost in preskušanje prenosnih motornih verižnih
žag - 2. del: Žage za nego dreves (ISO 11681-2:2011)
Machinery for forestry - Portable chain-saw safety requirements and testing - Part 2:
Chain-saws for tree service (ISO 11681-2:2011)
Forstmaschinen - Sicherheitstechnische Anforderungen und Prüfungen für tragbare
Kettensägen - Teil 2: Kettensägen für die Baumpflege (ISO 11681-2:2011)
Matériel forestier - Exigences de sécurité et essais des scies à chaîne portatives - Partie
2: Scies à chaîne pour l'élagage des arbres (ISO 11681-2:2011)
Ta slovenski standard je istoveten z: EN ISO 11681-2:2011
ICS:
65.060.80 Gozdarska oprema Forestry equipment
SIST EN ISO 11681-2:2012 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 11681-2:2012
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SIST EN ISO 11681-2:2012
EUROPEAN STANDARD
EN ISO 11681-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2011
ICS 65.060.80 Supersedes EN ISO 11681-2:2008
English Version
Machinery for forestry - Portable chain-saw safety requirements
and testing - Part 2: Chain-saws for tree service (ISO 11681-
2:2011)
Matériel forestier - Exigences de sécurité et essais des Forstmaschinen - Sicherheitstechnische Anforderungen
scies à chaîne portatives - Partie 2: Scies à chaîne pour und Prüfungen für tragbare Kettensägen - Teil 2:
l'élagage des arbres (ISO 11681-2:2011) Kettensägen für die Baumpflege (ISO 11681-2:2011)
This European Standard was approved by CEN on 30 November 2011.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11681-2:2011: E
worldwide for CEN national Members.
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SIST EN ISO 11681-2:2012
EN ISO 11681-2:2011 (E)
Contents Page
Foreword .3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC .4
2
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SIST EN ISO 11681-2:2012
EN ISO 11681-2:2011 (E)
Foreword
This document (EN ISO 11681-2:2011) has been prepared by Technical Committee ISO/TC 23 "Tractors and
machinery for agriculture and forestry" in collaboration with Technical Committee CEN/TC 144 “Tractors and
machinery for agriculture and forestry” the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by June 2012, and conflicting national standards shall be withdrawn at
the latest by June 2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 11681-2:2008.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive.
For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 11681-2:2011 has been approved by CEN as a EN ISO 11681-2:2011 without any
modification.
3
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SIST EN ISO 11681-2:2012
EN ISO 11681-2:2011 (E)
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association to provide one means of conforming to Essential Requirements of
the New Approach Directive 2006/42/EC on machinery.
Once this standard is cited in the Official Journal of the European Union under that Directive and has been
implemented as a national standard in at least one Member State, compliance with the normative clauses of
this standard confers, within the limits of the scope of this standard, a presumption of conformity with the
relevant Essential Requirements of that Directive and associated EFTA regulations.
WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling
within the scope of this standard.
4
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SIST EN ISO 11681-2:2012
INTERNATIONAL ISO
STANDARD 11681-2
Third edition
2011-12-01
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 11681-2:2011(E)
©
ISO 2011
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SIST EN ISO 11681-2:2012
ISO 11681-2:2011(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2011 – All rights reserved
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SIST EN ISO 11681-2:2012
ISO 11681-2:2011(E)
Contents Page
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Safety requirements and/or protective measures . 3
4.1 General . 3
4.2 Handles . 3
4.3 Hand protection . 3
4.4 Balance and holding moment . 5
4.5 Protection against injury by kickback . 5
4.6 Chain catcher . 6
4.7 Spiked bumper . 6
4.8 Chip discharge . 6
4.9 Guide-bar cover . 6
4.10 Engine starting device . 6
4.11 Engine stopping device . 7
4.12 Throttle control . 7
4.13 Drive sprocket guard . 8
4.14 Clutch . 8
4.15 Protection against contact with parts under high voltage . 9
4.16 Protection against contact with hot parts . 9
4.17 Fuel and oil systems .10
4.18 Exhaust gases . 11
4.19 Chain lubrication . 11
4.20 Chain tensioning . 11
4.21 Attachment device . 11
4.22 Vibration .12
4.23 Noise .12
4.24 Electromagnetic immunity .12
5 Information for use .13
5.1 Instruction handbook .13
5.2 Marking .16
5.3 Warnings .16
5.4 Test of labels .17
Annex A (informative) Working with tree service chain-saws from rope and harness .19
Annex B (informative) List of significant hazards .24
Bibliography .26
© ISO 2011 – All rights reserved iii
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SIST EN ISO 11681-2:2012
ISO 11681-2:2011(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 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 third edition cancels and replaces the second edition (ISO 11681-2:2006), which has been technically
revised.
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
iv © ISO 2011 – All rights reserved
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SIST EN ISO 11681-2:2012
ISO 11681-2:2011(E)
Introduction
This document is a type-C standard as stated in ISO 12100.
The machinery concerned and the extent to which hazards, hazardous situations or hazardous events are
covered are indicated in the scope of this document.
When requirements of this type-C standard are different from those which are stated in type-A or type-B
standards, the requirements of this type-C standard take precedence over the requirements of the other
standards for machines that have been designed and built according to the requirements of this type-C standard.
At the time of publication of this edition, it was not state of the art to require that starting of the machine would
be always possible without causing movement of the saw chain. Such a requirement will be considered for
inclusion in the next revision of this International Standard.
© ISO 2011 – All rights reserved v
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SIST EN ISO 11681-2:2012
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SIST EN ISO 11681-2:2012
INTERNATIONAL STANDARD ISO 11681-2:2011(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 or 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 for pruning and dismantling
standing tree crowns, and by persons having read and understood the safety requirements provided in the
instruction handbook, 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 referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
ISO 6531:2008, 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
ISO 13772, Forestry machinery — Portable chain-saws — Non-manually actuated chain brake performance
© ISO 2011 – All rights reserved 1
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SIST EN ISO 11681-2:2012
ISO 11681-2:2011(E)
ISO 13849-1:2006, 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 60745-1:2006, Hand-held motor-operated electric tools — Safety — Part 1: General requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 6531 and ISO 12100 and the
following apply.
NOTE Figure 1 shows an example of a chain-saw within the scope of this part of ISO 11681.
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
2 © ISO 2011 – All rights reserved
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SIST EN ISO 11681-2:2012
ISO 11681-2:2011(E)
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, 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.
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, and
— they conform to the dimensions and clearances given for tree-service chain-saws in ISO 7914 (see also
4.12.1).
The strength of both handles shall comply with ISO 7915.
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. 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.
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.
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SIST EN ISO 11681-2:2012
ISO 11681-2:2011(E)
The dimensions of this front hand guard shall comply with ISO 6533. Its strength shall comply with ISO 6534.
4.3.1.2 Verification
Dimensions shall be verified by measurement. Strength requirements shall be verified by testing in accordance
with ISO 6534.
4.3.2 Protection at rear handle
4.3.2.1 Requirements
A 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 broken chain.
This 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 handle (see Figure 2).
This requirement may also be fulfilled by parts of the machine.
The strength of the rear hand guard shall comply with ISO 6534.
4.3.2.2 Verification
Dimensions shall be verified by measurement. Strength requirements shall be verified by testing in accordance
with ISO 6534.
Dimensions in millimetres
Key
1 minimum area covered or guarded to protect hand from broken saw chain
Figure 2 — Minimum dimensions of protection at rear handle
4 © ISO 2011 – All rights reserved
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SIST EN ISO 11681-2:2012
ISO 11681-2:2011(E)
4.4 Balance and holding moment
4.4.1 Requirements
Chain-saws shall be longitudinally balanced to within ±25° between the centreline of the guide bar and the
horizontal plane, and laterally balanced to within ±10° between the guide bar plane and the vertical plane.
The maximum holding moment shall not exceed 6 N⋅m.
The limits shall be met by the shortest and longest applicable guide bars.
4.4.2 Verification
The angles for longitudinal and lateral balance and the holding moment shall be verified by functional testing
in accordance with ISO 8334.
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 50 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.
4.5.1.2 Verification
The chain brake release force and stopping time shall be verified in accordance with ISO 6535.
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 tree-service chain-saws given in ISO 13772.
4.5.2.2 Verification
The non-manually activated chain brake system shall be verified by functional testing in accordance with
ISO 13772.
4.5.3 Kickback and chain stop angles
4.5.3.1 Requirements
The computed kickback angle or the chain stop angle, whichever is the lesser, shall be determined for each
guide bar and chain specified in the instruction handbook and shall not exceed 25°.
4.5.3.2 Verification
The computed kickback angle and chain stop angle shall be verified by functional testing in accordance with
ISO 9518.
© ISO 2011 – All rights reserved 5
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SIST EN ISO 11681-2:2012
ISO 11681-2:2011(E)
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. 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. Means for replacing the chain catcher shall be verified by inspection.
4.7 Spiked bumper
4.7.1 Requirements
The chain-saw shall have provision for mounting a spiked bumper (see Figure 1).
4.7.2 Verification
The provision for mounting a spiked bumper shall be verified by inspection.
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-cutting operations.
4.9 Guide-bar cover
4.9.1 Requirements
The chain-saw shall be provided with a guide-bar cover (see Figure 1), so designed that it remains attached to
the guide bar during transport and storage.
4.9.2 Verification
The attachment of the guide-bar cover to the guide bar shall be verified by inspection when holding the
chain-saw in any direction.
4.10 Engine starting device
4.10.1 Requirements
The engine starting device shall be a self-contained, battery-powered electric starter and/or a manual starter
where the actuator is permanently attached to the machine.
Chain-saws with a manual starter shall have a recoil device for the rope.
Two or more separate and dissimilar actions shall be required to activate the electrical starting device.
6 © ISO 2011 – All rights reserved
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SIST EN ISO 11681-2:2012
ISO 11681-2:2011(E)
4.10.2 Verification
The means of starting the chain-saw shall be verified by inspection and functional testing.
4.11 Engine stopping device
4.11.1 Requirements
The chain-saw shall be fitted with an engine stopping device by means of which the engine can be brought to
a final stop and which does not depend on sustained manual effort for its operation. The control for this device
shall be so positioned that it can be operated using either hand when the saw is held with one hand, and with
the right hand when the saw is held with both hands, whether or not the operator is wearing protective gloves.
The colour of the control shall clearly contrast with the background.
4.11.2 Verification
The correct functioning of the engine stopping device shall be verified by inspection while the machine is being
operated. The location and colour of the c
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