EN ISO 10517:2009

SLOVENSKI STANDARD
01-oktober-2009
1DGRPHãþD
SIST EN 774:1996
SIST EN 774:1996/A1:2000
SIST EN 774:1996/A2:1998
SIST EN 774:1996/A3:2001
Prenosni motorni obrezovalniki žive meje - Varnost (ISO 10517:2009)
Powered hand-held hedge trimmers - Safety (ISO 10517:2009)
Tragbare motorbetriebene Heckenscheren - Sicherheit (ISO 10517:2009)
Taille-haies portatifs à moteur - Sécurité (ISO 10517:2009)
Ta slovenski standard je istoveten z: EN ISO 10517:2009
ICS:
65.060.70 Vrtnarska oprema Horticultural equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 10517
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2009
ICS 65.060.70 Supersedes EN 774:1996
English Version
Powered hand-held hedge trimmers - Safety (ISO 10517:2009)
Taille-haies portatifs à moteur - Sécurité (ISO 10517:2009) Tragbare motorbetriebene Heckenscheren - Sicherheit
(ISO 10517:2009)
This European Standard was approved by CEN on 24 July 2009.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10517:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC .4
Annex ZB (informative) Relationship between this European Standard and the Essential
Requirements of EC Directive 2006/42/EC .5

Foreword
This document (EN ISO 10517:2009) 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 2010, and conflicting national standards shall be withdrawn at
the latest by January 2010.
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 774:1996.
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 EC Directive(s).
For relationship with EC Directive(s), see informative Annex ZA and Annex ZB, which are integral parts 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, 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 10517:2009 has been approved by CEN as a EN ISO 10517:2009 without any modification.
Annex ZA
(informative)
Relationship between this European Standard and
the Essential Requirements of EU Directive 98/37/EC
This International 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 on machinery, amended by the New Approach 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 relevant Essential Requirements, except Essential Requirement 1.5.8 of that Directive, and
associated EFTA regulations.
WARNING — Other requirements and other EU Directives may be applicable to the products falling
within the scope of this standard.
Annex ZB
(informative)
Relationship between this European Standard and
the Essential Requirements of EC Directive 2006/42/EC
This International 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 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 relevant Essential Requirements, except Essential Requirement 1.5.8 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.

INTERNATIONAL ISO
STANDARD 10517
Second edition
2009-07-15
Powered hand-held hedge trimmers —
Safety
Taille-haies portatifs à moteur — Sécurité

Reference number
ISO 10517:2009(E)
©
ISO 2009
ISO 10517:2009(E)
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©  ISO 2009
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ii © ISO 2009 – All rights reserved

ISO 10517:2009(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope .1
2 Normative references .1
3 Terms and definitions .2
4 List of significant hazards .6
5 Safety requirements and/or verification of safety measures .8
5.1 General.8
5.2 Handles and cutting device .8
5.3 Starting and idling .18
5.4 Controls .18
5.5 Power drive parts protection.19
5.6 Heat protection.19
5.7 Fuel tank .20
5.8 Engine exhaust .20
5.9 Electrical requirements of ignition system .20
5.10 Vibration .21
5.11 Noise .21
6 Information for use .22
6.1 Instructions for use .22
6.2 Marking .23
6.3 Warnings.23
6.4 Durability of marking and warnings.24
Annex A (informative) Safety instructions.25
Annex B (informative) Symbols and pictograms .28
Annex C (normative) Vibration .31
Annex D (normative) Noise test code — Engineering method (grade 2) .39
Annex E (informative) Example of material and construction fulfilling the requirements for an
artificial surface for the noise test code.48
Bibliography .50

ISO 10517:2009(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 10517 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and
forestry, Subcommittee SC 13, Powered lawn and garden equipment.
This second edition cancels and replaces the first edition (ISO 10517:1993), which has been technically
revised as follows. It has been harmonized with the revised requirements of EN 774. Noise and vibration
requirements have been included as well as a table listing the significant hazards.
iv © ISO 2009 – All rights reserved

ISO 10517:2009(E)
Introduction
Noise emission and vibration levels are primarily determined for
⎯ manufacturers’ declaration of levels,
⎯ comparisons of the vibration level and noise emitted by hedge trimmers in the family concerned, and
⎯ for purposes of noise control at the source at the design stage.
INTERNATIONAL STANDARD ISO 10517:2009(E)

Powered hand-held hedge trimmers — Safety
IMPORTANT — The electronic file of this document contains colours which are considered to be
useful for the correct understanding of the document. Users should therefore consider printing this
document using a colour printer.
1 Scope
This International Standard specifies safety requirements and their verification for the design and construction
of hand-held, integrally-driven petrol combustion engine hedge trimmers, hereafter referred to as “hedge
trimmers”, designed to be used by a single operator for trimming hedges and bushes while utilizing one or
more linear reciprocating cutter blades.
It establishes methods for the elimination or reduction of hazards arising from the use of the trimmers. In
addition, it specifies the type of information to be provided by the manufacturer on safe working practices.
This International Standard deals with all significant hazards, hazardous situations and events relevant to
hand-held powered hedge trimmers when they are used as intended (see Clause 4).
This International Standard does not deal with low noise design. It is not applicable to hedge trimmers with an
engine displacement over 80 cm , nor is it applicable to hedge trimmers manufactured before the date of its
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 354:2003, Acoustics — Measurement of sound absorption in a reverberation room
ISO 3744:1994, Acoustics — Determination of sound power levels of noise sources using sound pressure —
Engineering method in an essentially free field over a reflecting plane
ISO 3767-1:1998, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment —
Symbols for operator controls and other displays — Part 1: Common symbols
ISO 3767-3:1995,Tractors, machinery for agriculture and forestry, powered lawn and garden equipment —
Symbols for operator controls and other displays — Part 3: Symbols for powered lawn and garden equipment
ISO 3767-4:1993, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment —
Symbols for operator controls and other displays — Part 4: Symbols for forestry machinery
ISO 3864-1:2002, Graphical symbols — Safety colours and safety signs — Part 1: Design principles for safety
signs in workplaces and public areas
ISO 4871:1996, Acoustics — Declaration and verification of noise emission values of machinery and
equipment
ISO 5347-22:1997, Methods for the calibration of vibration and shock pick-ups — Part 22: Accelerometer
resonance testing — General methods
ISO 10517:2009(E)
ISO 7293:1997, Forestry machinery — Portable chain saws — Engine performance and fuel consumption
ISO 8041:2005, Human response to vibration — Measuring instrumentation
ISO 8893:1997, Forestry machinery — Portable brush-cutters and grass-trimmers — Engine performance and
fuel consumption
ISO 11201:1995, Acoustics — Noise emitted by machinery and equipment — Measurement of emission
sound pressure levels at a work station and at other specified positions — Engineering method in an
essentially free field over a reflecting plane
EN 12096:1997, Mechanical vibration — Declaration and verification of vibration emission values
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 13857:2008, Safety of machinery — Safety distances to prevent hazard zones being reached by upper
and lower limbs
IEC 61672-1:2002, Electroacoustics — Sound level meters — Part 1: Specifications
IEC 60745-1:2006, Hand-held motor operated electric tools — Safety — Part 1: General requirements
IEC 60745-2-15:2006, Hand-held motor-operated electric tools — Safety — Part 2-15: Particular requirements
for hedge trimmers
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
petrol combustion engine hedge trimmer
machine fitted with reciprocating blades made of metal, intended to cut and form hedges, bushes and similar
vegetation
3.2
cutting device
part of the assembly consisting of cutter blade and shear plate, or of the cutter blades together with any
supporting part, which performs the cutting action and that can be single- or double-sided
See Figure 2.
3.3
cutter blade
part of the cutting device having blade teeth which cut by a shearing action either against other blade teeth or
against a shear plate
See Figure 2.
3.4
blade tooth
part of the cutter blade which is sharpened to perform the shearing action
See Figure 2.
2 © ISO 2009 – All rights reserved

ISO 10517:2009(E)
3.5
cutting length
effective cutting length of the cutting device measured from the inside edge of the first blade tooth or shear
plate tooth to the inside edge of the last blade tooth or shear plate tooth
See Figure 3.
NOTE Where both blades move, the measurements are taken when the first and last teeth are furthest apart.
3.6
front handle
handle located at or towards the cutting device
See Figure 1.
3.7
rear handle
handle located furthest from the cutting device
See Figure 1.
3.8
throttle lock
device for temporarily setting the throttle in a partially open position to aid starting
3.9
throttle trigger
device for operating the throttle
3.10
blade control
device activated by the operator's hand or finger for controlling the cutter blade movement
NOTE Depending on the application, this can require a single or a two-stage operation.
3.11
blunt extension
extending blunt part of the cutting device or an extending part of an unsharpened plate fitted to the cutting
device to prevent contact with the moving cutter blade
3.12
maximum operating engine [motor] speed
highest engine [motor] speed obtainable with the cutting device engaged
3.13
adjustable handle
handle whose position can be modified either by movement or by rotation
ISO 10517:2009(E)
a)  Petrol combustion engine hedge trimmer

b)  Petrol combustion engine hedge trimmer
Figure 1 (continued)
4 © ISO 2009 – All rights reserved

ISO 10517:2009(E)
c)  Long-reach petrol combustion engine hedge trimmer
Key
1 cutting device
2 guard
3 front handle
4 rear handle
5 blade tooth
6 blade control
Figure 1 — Examples of types of hedge trimmer

a) b)
Key
1 cutting blade
2 blade tooth
3 shear plate
4 cutting device
5 blunt extension
6 unsharpened plate
Figure 2 — Cutting device
ISO 10517:2009(E)
Key
1 cutting length
Figure 3 — Cutting length
4 List of significant hazards
This clause contains for defined danger zones all the significant hazards, hazardous situations and events, as
far as they are dealt with in this International Standard, identified by risk assessment as significant for these
types of hedge trimmer and which require specific action by the designer or manufacturer to eliminate or to
reduce the risk (see Table 1). It is the responsibility of the manufacturer to check whether or not the safety
requirements given by this International Standard apply to each significant hazard presented by the specific
hedge trimmer and to confirm that the risk assessment is complete with particular attention to
⎯ the intended use of the hedge trimmer including maintenance, setting and cleaning and its foreseeable
misuse, and
⎯ identification of all significant hazards associated with the hedge trimmer.
6 © ISO 2009 – All rights reserved

ISO 10517:2009(E)
Table 1 — Significant hazards associated with powered hand-held hedge trimmers
Clause/subclause of this
Hazard Location or event
International Standard
1 Mechanical hazards
Due to:
a) shape Holding and operating the 5.2.1
hedge trimmer
b) relative locations Safe positioning in use 6.1; Annex A
1.2 Shearing hazard Clearing processed material 5.2.2, 5.2.3, 5.2.5, 6.1;
from cutting device Annex A
1.3 Cutting or severing hazard Inadvertent contact with 5.2.2, 5.2.3, 5.2.4, 5.2.5,
cutting device 5.2.6, 6.1; Annex A
1.4 Entanglement hazard Loose clothing entering 6.1; Annex A
cutting device
1.10 Ejection of parts (of machinery and processed Processed material ejected 6.1; Annex A
materials/workpieces) from cutting device
2 Electrical hazards
2.1 Contact of persons with live parts High voltage and ignition 5.9.1, 5.9.2, 5.9.3
(direct or indirect) parts
Damage to cables due to oil,
fuel and abrasion
3 Thermal hazards
3.1 Burns, scalds and other injuries, by possible Contact with hot parts 5.6
contact of persons with objects or materials with
an extremely high or low temperature, by flames or
explosions and also by the radiation of heat
sources
4 Hazards generated by noise
4.1 Hearing loss (deafness), other physiological Hearing damage due to 5.11, 6.1, 6.2; Annexes A
disorders (e.g. loss of balance, loss of awareness) hedge trimmer and/or and D
processing of material
5 Hazards generated by vibration (resulting in a Hand/arm damage due to 5.10, 6.1, 6.2; Annexes A
variety of neurological and vascular disorders) hedge trimmer and/or and C
processing of material
7 Hazards generated by materials and substances processed, used or exhausted by machinery, including:
7.1 Hazards resulting from contact with or inhalation of Breathing in of engine 5.8, 6.1; Annex A
harmful fluids, gases, mists, fumes and dusts exhaust fumes
7.2 Fire or explosion hazard Refuelling 5.7, 6.1; Annex A
8 Hazards generated by neglecting ergonomic principles in hedge trimmer design (mismatch of machinery
with human characteristics and abilities) caused, for example, by:
8.1 Unhealthy postures or excessive efforts Handling during use 6.1; Annex A
8.3 Neglected use of personal protection equipment Protect against noise and 5.10, 5.11, 6.1, 6.2; Annex A
vibration
8.6 Human error Incorrect use, etc. 6.1; Annex A
Danger to bystanders
8.7 Inadequate design, location of manual controls Location of stop/start control 5.4.2, 5.4.3
Identification of control(s) 5.4.1, 5.4.3

ISO 10517:2009(E)
Table 1 (continued)
Clause/subclause of this
Hazard Location or event
International Standard
10 Hazards caused by failure of energy supply, breaking down of machinery parts and other functional
disorders, including:
10.3 Failure, malfunction of control system (unexpected Unexpected movement of 5.2.3, 5.2.4, 5.2.5, 5.3
start-up, unexpected overrun) cutting device
Run-down of cutting device
10.4 Errors of fitting Fitting an incorrect blade or 5.2.7; 6.1; Annex A
fitting blade incorrectly
11 Hazards caused by (temporary) missing and/or incorrectly positioned safety-related measures/means,
for example:
11.1 All kinds of guards Protection against access to 5.2.2, 5.2.6, 5.5, 5.6, 5.9
hazardous parts
11.3 Starting and stopping devices Control of hedge trimmer 5.2, 5.3, 5.4
11.4 Safety signs and signals User awareness of hazards 6.2, Annex B
11.5 All kinds of information or warning devices User awareness and safe Clause 6; Annexes A and B
use
11.6 Energy supply disconnecting devices Engine stop 5.4.3

5 Safety requirements and/or verification of safety measures
5.1 General
The hedge trimmer shall comply with the safety requirements and/or protective measures of this clause. In
addition, the hedge trimmer shall be designed according to the principles of ISO 12100-1 and ISO 12100-2 for
hazards relevant but not significant that are not dealt with by this International Standard (e.g. sharp edges
other than the cutting device).
5.2 Handles and cutting device
5.2.1 Handles
The number of handles shall be in accordance with Table 2.
The handles shall be designed and constructed in such a way as to make starting and stopping
straightforward and so that each one can be grasped (held) with one hand The gripping surface of handles
shall be at least 100 mm long. On bail or closed handles (U-shaped handles) this dimension is related to the
inner width of the gripping surface. On straight handles it is the complete length between the housing and the
end of the handle.
The gripping length of a bail or closed handle shall comprise any length that is straight or curved at a radius of
greater than 100 mm, together with any blend radius, but not more than 10 mm at either or both ends of the
gripping surface.
There shall be a minimum radial clearance of 25 mm around the gripping length.
If a part containing the motor complies with the dimensions above, it may be considered as a handle.
8 © ISO 2009 – All rights reserved

ISO 10517:2009(E)
If a straight handle is supported centrally (i.e. “T” type), the gripping length shall be calculated as follows:
a) for handles with a periphery (not including the support) of less than 80 mm, the gripping length is the sum
of the two parts either side of the support;
b) for handles with a periphery (not including the support) of 80 mm or more, the gripping length is the
complete length from end to end.
Where appropriate, the part of the handle containing the blade control actuator shall be counted as part of the
handle gripping length. Finger grip or similar superimposed profiles shall not affect the method of calculating
handle gripping length.
If handles are adjustable to different positions, it shall not be possible to fix them in a position which
contravenes other provisions of this International Standard.
For handles with blade control which are adjustable without the use of a tool, it shall not be possible to alter
the handle position when the cutting device is powered. When altering the position of a handle with blade
control, the blade control shall be disabled such that the cutting device can not be powered until the handle is
locked into one of its designated operating positions (e.g. the control is automatically disengaged from the
throttle of the engine if the handle is not locked into one of the positions of use).
Compliance shall be checked by inspection and measurement.
5.2.2 Hand protection
From any handle it shall not be possible to touch the moving cutter blade with fingers spread out.
All handles shall be so located that the test distance from the cutter blade to the side furthest from the cutter
blade of any handle is not less than 120 mm. The distance shall be measured along the shortest path from the
side of the handle furthest from the cutter blade to the nearest cutting edge of the cutter blade [see
Figure 4 a)]. If there is a guard, the distance shall be measured from the furthest side of the handle to the
guard and from there to the nearest cutting edge of the cutter blade [see Figure 4 b)].
If the cutting device can be adjusted or altered for length, distance from handles or angle with respect to the
handles, then this measurement shall be taken in the position in which any part of the cutting blade is nearest
to the front handle. Positions where the cutting device will not operate are not included.
ISO 10517:2009(E)
X W 120 mm
a)
X + X W 120 mm
1 2
b)
Figure 4 — Examples of measurement method for test distance for hand protection
10 © ISO 2009 – All rights reserved

ISO 10517:2009(E)
5.2.3 Cutting device
To safeguard against contact with the cutter blade, hedge trimmers shall be constructed to meet the
requirements of one of the categories given in Table 2.
Table 2 — Requirements
Category 1 2 3 4 5
u 200 mm
Cutting length No requirement
> 200 mm > 200 mm > 200 mm
Holding moment
No requirement No requirement No requirement No requirement > 20 N⋅m
(see 5.2.4)
Minimum number
a a a a
1 2 and harness 2 and harness 2 and harness 2 and harness
of handles
Number of
b b
handles with
1 1 2 2 1 (in rear)
blade control
Maximum
c c
No requirement No requirement 1 s 1 s 2 s
stopping time
In accordance with In accordance with In accordance with In accordance with In accordance with
Cutting device
Figure 5 Figure 5 Figure 5 or 6 Figure 5 or 7 Figure 5, 6 or 7
Stopping times for categories 4 and 5 will be reviewed with a view to reduction by 50 % at the next revision of this
International Standard.
a
The harness shall only be required if the mass of the hedge trimmer is greater than 6 kg and the distance from the blade control to
a moving cutting blade is greater than 1 000 mm.
b
If the distance from the blade control to a moving cutting blade is greater than 1 000 mm then only the rear handle is required to
have a blade control.
c
If the distance from the blade control to a moving cutting blade is greater than 1 000 mm then the stopping time may be 2 s.
Blunt extensions shall extend over the full length of the cutting device for blade configurations according to
Figures 5 and 6. For cutting devices with blade configurations as shown in Figure 7, the blunt extensions shall
reach a distance of at least 400 mm from any point of the rear face of the front handle [see Figures 8 a)
and b)] or 1 000 mm from the rear of the control on the rear handle [see Figure 8 c)]. If the front handle is
located part way along the cutting device, the blunt extensions shall start at the first blade tooth and continue
until the 400 mm minimum distance beyond the rear of the front handle is reached.
Blunt extensions are not required for category 4 and 5 hedge trimmers with blade spacing in excess of that
allowed by the dimension d in Figures 5 and 6 if there are only two handles and the front handle is
permanently fixed on the smooth side of a single-sided cutting device [e.g. Figures 1 a) and 9 a)].
Positions where the cutting device will not operate are not included.
ISO 10517:2009(E)
Key
d u 8 mm closest distance between adjacent blunt extensions measured outboard of the blade teeth
d W 8 mm minimum depth of blunt extensions
1 extending depth of blunt part or unsharpened plate
NOTE See Table 2. Can be single- or double-sided.
Figure 5 — Cutting device configuration option for categories 1, 2, 3 and 5

Key
d u 12 mm closest distance between adjacent blunt extension measured outboard of the blade teeth
d W 8 mm minimum depth of blunt extensions
1 extending depth of blunt part or unsharpened plate
NOTE See Table 2. Can be single- or double-sided.
Figure 6 — Cutting device configuration option for categories 3 and 5
12 © ISO 2009 – All rights reserved

ISO 10517:2009(E)
Dimensions in millimetres
Key
1 extending depth of blunt part or unsharpened plate
NOTE See Table 2. Can be single- or double-sided.
Figure 7 — Cutting device configuration option for categories 4 and 5
Dimensions in millimetres
a)
Figure 8 (continued)
ISO 10517:2009(E)
Dimensions in millimetres
b)
c)
Figure 8 — Example of measurement method for minimum length of blunt extension
5.2.4 Holding moment
The holding moment, M, as required for category 5 according to Table 2, shall be calculated as follows:
M = F × L
where
F is the force in newtons;
L is the length in metres.
For a hedge trimmer with a lateral rear handle, the holding moment shall be calculated taking into account the
dimensions and points of application shown in Figure 9 a).
14 © ISO 2009 – All rights reserved

ISO 10517:2009(E)
For a hedge trimmer with a longitudinal rear handle, the holding moment shall be calculated taking into
account the dimensions and points of application shown in Figure 9 b).
The holding moment for a machine with tanks shall be determined with them half full.
5.2.5 Blade stopping time
5.2.5.1 General
The cutting device stopping mechanism shall meet the stop time requirement given in Table 2.
Compliance shall be checked in accordance with 5.2.5.2 and 5.2.5.3.
5.2.5.2 Test method
The ambient test temperature shall be (20 ± 5) °C.
The hedge trimmer shall be mounted and instrumented in such a manner that the results of the test are not
affected. If an external starting device is used, it shall not influence the results.
The means for operating the hedge trimmer during the test shall be such that the blade control is released
abruptly from the full ON position and returns to the idle or OFF position by itself. A device to detect the
moment of release of the blade control shall be provided.
The running speed during the test of ungoverned and governed hedge trimmers shall be 133 % of the speed
corresponding to maximum power or the maximum speed, whichever is the lesser.
Tachometers shall have an accuracy of ± 2,5 % and the time-recording measurement system shall have a
total accuracy of ± 25 ms.
Figure 10 presents a schematic representation of two cycles. Each cycle shall consist of the following
sequence:
⎯ accelerate the blade from rest to the maximum speed (time equal to t );
s
⎯ hold it at this speed for a short time to ensure that it is stable (time equal to t );
r
⎯ release the blade control and allow the blade to come to rest (time equal to t );
b
⎯ allow a short time at rest before commencing the next cycle (time equal to t ).
o
ISO 10517:2009(E)
Dimensions in millimetres
a)
b)
Key
1 centre of gravity
a
300 mm dimension is from the centre of the rear handle.
b
350 mm dimension is from the front of the rear handle.
Figure 9 — Calculation of holding moment

Figure 10 — Example of test cycles
16 © ISO 2009 – All rights reserved

ISO 10517:2009(E)
If the total time for one cycle is t , then t = t + t + t + t . The test cycle times for “ON” (t + t ) and “OFF”
c c s r b o s r
(t + t ) shall be decided by the manufacturer but shall not exceed 100 s “ON” and 20 s “OFF”.
b o
The hedge trimmer shall be run in for 15 min prior to the test, in accordance with the manufacturer’s
instructions, with the cutting device, stopping mechanism, carburettor and ignition being adjusted and
lubricated as appropriate, also in accordance with the manufacturer's instructions.
Ten ON/OFF operations of the blade control shall be carried out prior to the test, with the cutting device and
stopping mechanism being adjusted in accordance with the manufacturer’s instructions.
Stopping time is measured from the moment of release of the blade control until the cutter blade has reached
the end of the last full stroke. Where there are two blade controls, half the test cycles and stop time
measurements shall be carried out on each.
5.2.5.3 Operating mode
For hedge trimmers with an adjustable stopping mechanism, the test sequence shall consist of a total of
306 cycles; measurements of the stopping time of the cutting blades shall be made for the first six cycles of
every 50 cycles of operation and the final six cycles of the test sequence. During the test, no adjustments shall
be made.
For hedge trimmers with a non-adjustable stopping mechanism, the test sequence shall consist of a total of
2 506 cycles; measurement of the stopping time of the cutting blade shall be made for the first six cycles of
every 500 cycles of operation and the final six cycles of the test sequence.
In both cases, the hedge trimmer shall be lubricated as appropriate.
No other stopping times shall be recorded.
5.2.5.4 Acceptance
Each of the measured stopping times shall comply with the requirements of Table 2.
If the sample fails to complete the full number of cycles, but otherwise meets the requirements of this test,
either the hedge trimmer may be repaired if the stopping mechanism is not affected and the test continued or,
if the machine cannot be repaired, one further sample may be tested which shall then comply fully with the
requirements.
The test sequence need not be continuous; however, any period or periods of operation shall only be stopped
after any of the required sets of six measured cycles.
5.2.6 Cutting device transportation guard
A guard for the cutting device shall be provided. It shall be designed to cover the cutting device during
transportation or when the hedge trimmer is stored.
The guard shall stay in its protective position when the hedge trimmer is held with the covered cutting device
pointing vertically downwards.
5.2.7 Cutting device attachment
The cutting device attachment shall be designed so that it cannot be fitted incorrectly.
Compliance shall be checked by inspection and functional testing.
ISO 10517:2009(E)
5.3 Starting and idling
Hedge trimmers shall be fitted with one or two blade controls (see Table 2) and be so designed that the
hazards due to inadvertent starting are reduced to a minimum. This requirement shall be deemed to be met if
either
a) the blade control, or one of the blade controls for categories 3 and 4 (see Table 2), requires two separate
and dissimilar actions before the cutting device operates, or
b) the hedge trimmer has a blade control in each handle, neither of which requires two separate and
dissimilar actions before the cutting device operates, and the blunt extensions, if required by 5.2.3, extend
the full length of the cutting blade.
There shall be no arrangement to lock the blade control in the ON position and the cutting device shall stop
when a blade control is released.
Starting the engine shall not be considered as one of these actions unless the engine stops when the control
is released.
When starting the engine of hedge trimmers, the throttle trigger may be locked in a starting position (throttle
lock). This position shall be unlocked automatically when the throttle trigger is operated.
On hedge trimmers, there shall be a means which separates the driving mechanism from the cutter blades.
When the throttle lock is engaged for starting the engine, the cutting attachment may be engaged. When the
engine is idling, the cutting device shall not have any cutting actions. If a centrifugal clutch is provided, it shall
disconnect the power to the cutter blades when the engine is idling. The cutting device shall disengage at not
less than 1,25 times the idling speed.
Compliance shall be checked by inspection.
5.4 Controls
5.4.1 Marking
All controls shall be duly marked, indicating the function, direction and/or method of operation as appropriate.
Detailed instructions on the operation of all controls shall be provided in an instruction handbook (see 6.1).
Colours shall be in contrast to the background unless the symbols are cast, embossed or stamped, in which
case colours are not required. Symbols according to ISO 3767-1 and ISO 3767-3 may be used as appropriate
(see Annex B).
5.4.2 Blade control
With hand(s) on the handle(s), the controls shall be operable from all normal hand positions, without having to
change the pos
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