SIST EN ISO 11681-2:2007

SLOVENSKI STANDARD
SIST EN ISO 11681-2:2007
01-januar-2007
1DGRPHãþD
SIST EN ISO 11681-2:1999
SIST EN ISO 11681-2:1999/A1:2004
Gozdarski stroji - Zahteve za prenosne motorne verižne žage in preskušanje - 2.
del: Žage za nego dreves (ISO/DIS 11681-2:2004)
Machinery for forestry - Portable chain-saw safety requirements and testing - Part 2:
Chain-saws for tree service (ISO 11681-2:2006)
Forstmaschinen - Sicherheitstechnische Anforderungen und Prüfungen für tragbare
Kettensägen - Teil 2: Kettensägen für die Baumpflege (ISO 11681-2:2006)
Matériel forestier - Exigences de sécurité et essais des scies a chaîne portatives - Partie
2: Scies a chaîne pour l'élagage des arbres (ISO 11681-2:2006)
Ta slovenski standard je istoveten z: EN ISO 11681-2:2006
ICS:
65.060.80
SIST EN ISO 11681-2:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN ISO 11681-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2006
ICS 65.060.80 Supersedes EN ISO 11681-2:1998
English Version
Machinery for forestry - Portable chain-saw safety requirements
and testing - Part 2: Chain-saws for tree service (ISO 11681-
2:2006)
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 11681-2:2006) Kettensägen für die Baumpflege (ISO 11681-2:2006)
This European Standard was approved by CEN on 12 June 2006.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, 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: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11681-2:2006: E
worldwide for CEN national Members.

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EN ISO 11681-2:2006 (E)





Foreword


This document (EN ISO 11681-2:2006) 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 January 2007, and conflicting national standards
shall be withdrawn at the latest by January 2007.

This document supersedes EN ISO 11681-2:1998.

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(s).

For relationship with EU Directive(s), 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, 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.


Endorsement notice

The text of ISO 11681-2:2006 has been approved by CEN as EN ISO 11681-2:2006 without any
modifications.

2

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EN ISO 11681-2:2006 (E)



ANNEX ZA
(informative)

Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC, amended by Directive 98/79/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 a means of conforming to
Essential Requirements of the New Approach Directive 98/37/EC, amended by Directive 98/79/EC.

Once this standard is cited in the Official Journal of the European Communities 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 corresponding 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.

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INTERNATIONAL ISO
STANDARD 11681-2
Second edition
2006-07-01


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 11681-2:2006(E)
©
ISO 2006

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ISO 11681-2:2006(E)
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ii © ISO 2006 – All rights reserved

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ISO 11681-2:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 List of significant hazards . 4
5 Safety requirements and verification. 4
5.1 General. 4
5.2 Handles . 5
5.3 Hand protection . 5
5.4 Balance and holding moment. 6
5.5 Protection against injury by kickback . 7
5.6 Chain catcher . 7
5.7 Spiked bumper . 8
5.8 Chip discharge . 8
5.9 Guide-bar cover . 8
5.10 Throttle trigger . 8
5.11 Engine stopping device. 9
5.12 Protection against contact with parts under high voltage . 9
5.13 Clutch. 9
5.14 Carburettor adjustment. 10
5.15 Protection against contact with hot parts. 10
5.16 Exhaust gases. 11
5.17 Chain lubrication. 11
5.18 Tank openings. 11
5.19 Chain tensioning. 11
5.20 Attachment device. 12
5.21 Vibration . 12
5.22 Noise . 12
6 Information for use . 13
6.1 Instruction handbook . 13
6.2 Markings . 16
6.3 Warnings. 16
Annex A (informative) Pictograms. 17
Annex B (informative) Working with tree service chain-saws from rope and harness. 18
Bibliography . 24

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ISO 11681-2:2006(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 second edition cancels and replaces the first edition (ISO 11681-2:1998), of which it forms the subject of
a technical revision, principally by the incorporation of ISO 11681-2:1998/Amd 1:2003 and other modifications
made necessary by the revision of ISO 11681-1.
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: Part 2: Chain-saws for tree service
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ISO 11681-2:2006(E)
Introduction
The structure of safety standards in the field of machinery is as follows.
a) Type-A standards (basis standards) give basic concepts, principle for design, and general aspects that
can be applied to machinery;
b) Type-B standards (generic safety standards) dealing with one or more safety aspect(s) or one or more
type(s) of safeguards that can be used across a wide range of machinery:
⎯ type-B1 standards on particular safety aspects (e.g. safety distances, surface temperature, noise);
⎯ type-B2 standards on safeguards (e.g. two-hands controls, interlocking devices, pressure sensitive
devices, guards);
c) Type-C standards (machinery safety standards) dealing with detailed safety requirements for a particular
machine or group of machines.
This document is a type-C standard as stated in ISO 12100-1.
When provisions of this type-C standard are different from those which are stated in type-A or type-B
standards, the provisions of this type-C standard take precedence over the provisions of the other standards
for machines that have been designed and built according to the provisions of this type-C standard.
The machinery concerned and the extent to which hazards, hazardous situations and events are covered are
indicated in the scope of this document. These hazards are specific to self-propelled, trailed, semi-mounted
and mounted agricultural machines.
This part of ISO 11681 has been prepared for a special type of chain-saw used by trained persons for tree
service work up in trees.
This part of ISO 11681 differs from ISO 11681-1 in the following respects:
⎯ Clause 1, the tree service chain-saws are limited in size by the maximum allowed dry mass of 4,3 kg;
⎯ Clause 3, a definition of trained operator has been added and that of chain saws for tree service revised;
⎯ 5.2.1, the required handle dimensions have been altered;
⎯ 5.4.1, a requirement for the sideways balance has been added with a limited holding moment of 6 N⋅m;
⎯ 5.5.2.1, the non-manual chain-brake system must meet stricter requirements;
⎯ 5.5.3.1, the allowed kickback angle has been reduced to 25°;
⎯ 5.12.1, the requirement for protection from contact with parts under high voltage has been enlarged to
include a requirement for an ignition interruption or short-circuiting device on the low voltage side;
⎯ 5.15.1, the requirement for protection from hot parts has been enlarged to all parts of the machine, except
the guide bar and saw chain;
⎯ 5.20, a requirement and verification for an attachment point has been added;
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ISO 11681-2:2006(E)
⎯ 6.1.2, additional information including how to use the saw up in trees using the example in Annex B is
required;
⎯ 6.3, new safety warnings and markings on the saw and information at the point of sale are requested,
with examples of the symbols to be used given in Annex A.

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INTERNATIONAL STANDARD ISO 11681-2:2006(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 specifies safety requirements and their verification for the design and construction of
portable combustion-engine, hand-held chain-saws for tree service, having a maximum mass, without guide
bar or saw chain and with tanks empty, equal to 4,3 kg, and designed for use by a trained operator for pruning
and dismantling standing tree crowns.
It gives methods for the elimination or reduction of hazards arising from the use of the chain-saws. In addition,
it specifies the type of information on safe working practices to be provided by the manufacturer.
It deals with all significant hazards. The environmental aspects, except for noise, have not been considered.
Chain-saws covered by this part of ISO 11681 are designed to be operated with the right hand on the rear
handle and the left hand on the front handle by persons having read and understood the safety requirements
in the instruction handbook and using the appropriate personal protective equipment (PPE).
This part of ISO 11681 is not applicable to chain-saws manufactured before 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 6531:1999, Machinery for forestry — Portable hand-held chain-saws — Vocabulary
ISO 6533:2001, Forestry machinery — Portable chain-saw front hand-guard — Dimensions and clearances
1)
ISO 6534:— , Forestry machinery — Portable chain-saw hand guards — Mechanical strength
ISO 6535:1991, Portable chain-saws — Chain brake performance
ISO 7293:1997, Forestry machinery — Portable chain-saws — Engine performance and fuel consumption
ISO 7914:2002, Forestry machinery — Portable chain-saws — Minimum handle clearance and sizes
ISO 7915:1991, Forestry machinery — Portable chain-saws — Determination of handle strength

1) To be published. (Revision of ISO 6534:1992)
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ISO 11681-2:2006(E)
2)
ISO 8334:— , Forestry machinery — Portable chain-saws — Determination of balance and maximum holding
moment
ISO 9518:1998, Forestry machinery — Portable chain-saws — Kickback test
ISO 10726:1992, Portable chain-saws — Chain catcher — Dimensions and mechanical strength
ISO 12100-1:2003, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic
terminology, methodology
ISO 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical
principles
ISO 13772, Forestry machinery — Portable chain-saws — Non-manually actuated chain brake performance
ISO 22867:2004, Forestry machinery — Vibration test code for portable hand-held machines with internal
combustion engine — Vibration at the handles
ISO 22868:2005, Forestry machinery — Noise test code for portable hand-held machines with internal
combustion engine — Engineering method (Grade 2 accuracy)
IEC 60745-1:2001, 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, ISO 12100-1, with the
exception of ISO 6531:1999, definition 2.2.1.2, and the following apply.
3.1
chain-saw for tree service
tree service chain-saw
specialized chain-saw of limited mass designed for use by a trained operator for pruning and dismantling
standing tree crowns
NOTE For an example, see Figure 1.
3.2
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 requirements 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)

2) To be published. (Revision of ISO 8334:1985)
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ISO 11681-2:2006(E)


Key
1 rear handle
2 throttle trigger lockout
3 throttle trigger
4 front handle
5 front-hand guard
6 guide-bar cover
7 guide bar
8 spiked bumper
9 chain catcher
10 stopping device
11 attachment point
12 chain
Figure 1 — Example of chain-saw for tree service
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ISO 11681-2:2006(E)
4 List of significant hazards
This clause specifies the significant hazards, hazardous situations and events in as far as they are dealt with
in this part of ISO 11681 (see Table 1), identified by risk assessment as significant for this type of machinery,
and which require action to eliminate or reduce the risk.
Table 1 — Significant hazards, hazardous situations and events covered by this part of ISO 11681
Hazard Subclause/Annex
1
Mechanical hazards created by cutting and impact, related to the saw chain. 5.3; 5.5; 5.6; 5.9; 5.19
2
Electrical hazards from contact with parts under high voltage (direct contact) or parts 5.12
which have become under high voltage under faulty conditions (indirect contact).
3 Thermal hazards, which can result in burns, scalds and other injuries, created by possible 5.15
contact of persons with objects or materials with high temperature including the radiation
of heat sources.
4
Noise hazards, which can result in hearing losses (deafness) and other physiological 5.22; 6.1; 6.3
disorders (e.g. loss of balance, loss of awareness), and interference with auditory signals
and speech communication.
5 Vibration hazards, which can result in peripheral circulatory and nervous functional 5.21; 6.1; 6.3
disturbances in the hand-arm system, such as white finger disease.
6
Hazards from contact with or inhalation of harmful fluids, gases, mists, fumes and dusts 5.16
related to exhaust gases.
7 Fire hazards related to fuel spillage. 5.18; 6.1
8
Hazards from unhealthy postures or excessive efforts related to machine use. 5.2; 5.4; 5.7; 5.10; 5.20;
6.1; Annex B
9 Hazards from unexpected start-up, unexpected overrun/over-speed from failure/disorder 5.2; 5.10; 5.11; 5.13
of the control system related to failure in the handles and position of the controls.
10 Hazards from failure of the control system related to handle strength, position of controls 5.2; 5.10; 5.11; 5.13; 6.2
and marking.
11 Hazards from break up (chain) during operation related to saw chain. 5.2; 5.3; 5.6; 5.17
12 Hazards from ejection of objects or fluids related to chip discharge and fuel spillage. 5.8; 5.18
13 Hazards from dropping the chain-saw while working in a tree. 5.20; 6.1; Annex B
5 Safety requirements and verification
5.1 General
The safe running of chain-saws depends on both the safety requirements as given in this clause, and the safe
working conditions associated with the use of adequate personal protection equipment (PPE), such as gloves,
arm and leg protection, boots, and eye, ear and head protective equipment.
The chain-saw shall comply with the safety requirements and/or protective measures of this clause. The
chain-saw shall also be marked according to 6.2 and carry warnings according to 6.3. In addition, the machine
shall be designed according to the principles of ISO 12100-2 for hazards relevant but not significant that are
not dealt with by this document.
The instruction handbook to be provided with the chain-saw shall comply with 6.1.
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ISO 11681-2:2006(E)
5.2 Handles
5.2.1 Requirements
The chain-saw shall have a handle for each hand. These handles shall be designed such that
⎯ they can be fully gripped by an operator when wearing protective gloves,
⎯ they provide the necessary sureness of grip by their shaping and surface, and
⎯ they conform to the dimensions given for tree service chain saws in ISO 7914 (see also 5.10.1).
The strength of both handles shall comply with ISO 7915.
Those chain-saws having a system for isolating the 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 5.11),
even in the case of a failure of the vibration isolation system.
5.2.2 Verification
Dimensions shall be verified by measurement. Strength requirements shall be verified by functional 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.
5.3 Hand protection
5.3.1 Protection at front handle
5.3.1.1 Requirements
A guard shall be fitted in the vicinity of the front handle to protect the operator’s fingers and hand from injury
by contact with the saw chain.
The dimensions of this front hand-guard shall comply with ISO 6533. Its strength shall comply with ISO 6534.
5.3.1.2 Verification
Dimensions shall be verified by measurement. Strength requirements shall be verified by functional testing in
accordance with ISO 6534.
5.3.2 Protection at rear handle
5.3.2.1 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 a broken saw-chain.
This guard shall extend from the right edge of the handle for at least 30 mm at the guide bar side and at least
100 mm lengthwise from the inner rear part of the handle, in accordance with 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.
5.3.2.2 Verification
Dimensions shall be verified by measurement. Strength requirements shall be verified by functional testing in
accordance with ISO 6534.
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ISO 11681-2:2006(E)
Dimensions in millimetres

Key
1 minimum area covered or guarded to protect hand from broken saw chain
Figure 2 — Minimum dimensions of protection at the rear handle
5.4 Balance and holding moment
5.4.1 Requirements
The chain-saw shall be evenly balanced.
The maximum angle between the centreline of the guide bar and the horizontal plane (longitudinal balance)
shall not exceed ± 25°. The maximum angle between the guide bar plane and the vertical plane (lateral
balance) shall be 0° ± 10°.
The maximum holding moment shall not exceed 6 N⋅m.
5.4.2 Verification
These limits shall be met with the shortest and longest guide bar. The range of guide bars shall be described
in the instruction handbook.
The angles for longitudinal and lateral balance and the holding moment shall be verified by functional testing
in accordance with ISO 8334.
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ISO 11681-2:2006(E)
5.5 Protection against injury by kickback
5.5.1 Chain brake
5.5.1.1 Requirements
The chain-saw shall be fitted with a chain brake. It shall be possible to activate the chain brake manually by
means of the front-hand guard. The chain bra
...