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BRITISH STANDARD Hand-held non-electric power tools — Safety requirements — Part 2: Cutting-off and crimping power tools ICS 25.100.01; 25.140.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BS EN 792-2:2000 +A1:2008 BS EN 792-2:2000+A1:2008 National foreword This British Standard is the UK implementation of EN 792-2:2000+A1:2008 It supersedes BS EN 792-2:2000 which is withdrawn The start and finish of text introduced or altered by amendment is indicated in the text by tags Tags indicating changes to CEN text carry the number of the CEN amendment For example, text altered by CEN amendment A1 is indicated by The UK participation in its preparation was entrusted to Technical Committee MCE/8, Compressors, pneumatic tools, pneumatic machines and vacuum technology A list of organizations represented on this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application Compliance with a British Standard cannot confer immunity from legal obligations This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 August 2000 © BSI 2009 ISBN 976 580 61931 Amendments/corrigenda issued since publication Date Comments 30 June 2009 Implementation of CEN amendment A1:2008 EUROPEAN STANDARD EN 792-2:2000+A1 NORME EUROPÉENNE EUROPÄISCHE NORM September 2008 ICS 25.140.10; 25.140.99 Supersedes EN 792-2:2000 English Version Hand-held non-electric power tools - Safety requirements - Part 2: Cutting-off and crimping power tools Machines portatives moteur non électrique - Prescriptions de sécurité - Partie 2: Machines de découpe et de sertissage Handgehaltene nicht-elektrisch betriebene Maschinen Sicherheitsanforderungen - Teil 2: Maschinen zum Abschneiden und Quetschen This European Standard was approved by CEN on 26 May 2000 and includes Amendment approved by CEN on 26 July 2008 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: rue de Stassart, 36 © 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members B-1050 Brussels Ref No EN 792-2:2000+A1:2008: E BS EN 792-2:2000+A1:2008 EN 792-2:2000+A1:2008 (E) Contents Page Foreword Introduction Scope Normative references 3.1 3.2 Terms and definitions General terms and definitions Terms and definitions related to cutting-off and crimping power tools List of hazards 5.1 5.2 5.3 5.4 5.5 5.6 5.7 Safety requirements and measures .8 Mechanical safety Thermal safety Noise .8 Vibration Materials and substances processed, used or exhausted Ergonomics Safety related measures and means 10 6.1 6.2 Information for use 10 Marking, signs and written warnings .10 Instruction for use .11 7.1 7.2 7.3 7.4 Verification 12 Noise .12 Vibration .13 Unintentional start .13 Structure of verification 13 Annex A (informative) Examples of power tools covered by this part 14 Annex B (informative) Symbols for labels and signs 15 Annex C (normative) Safety requirements related to the internal combustion engines 16 Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC" .19 Annex ZB (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC" 20 Bibliography 21 BS EN 792-2:2000+A1:2008 EN 792-2:2000+A1:2008 (E) Foreword This document (EN 792-2:2000+A1:2008) has been prepared by Technical Committee CEN/TC 255 "Handheld, non-electric power tools - Safety", the secretariat of which is held by SIS 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 March 2009 and conflicting national standards shall be withdrawn at the latest by December 2009 This European Standard 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 Annexes ZA and ZB, which are integral parts of this document." This document includes Amendment 1, approved by CEN on 2008-07-26 This document supersedes EN 792-2:2000 The start and finish of text introduced or altered by amendment is indicated in the text by tags ! " The standard has been created in close co-operation with CENELEC/TC 61F with the aim of achieving requirements for mechanical safety in the EN 50144 series, which are similar for hand-held electric and nonelectric power tools The annexes to this part of the standard are: Annex A (informative) Examples of power tools covered by this part Annex B (informative) Labels, signs and tags !Annexes ZA and ZB" (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives This standard also contains a Bibliography 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 United Kingdom BS EN 792-2:2000+A1:2008 EN 792-2:2000+A1:2008 (E) Introduction This European standard is a type C standard as stated in EN 1070 The machinery concerned and the extent to which hazards, hazardous situations and events are covered are indicated in the scope of this standard When provisions of this type C standard are different from those which are stated in type A or B standards, the provisions of this type C standard take precedence over the provisions of other standards, for machines that have been designed and built according to the provisions of this type C standard The European Standard, EN 792, consists of a number of independent parts for individual types of hand-held non-electric power tools Other EN standards deal with safety rules for hand-held power tools used in e g the following fields: agriculture and forestry such as chain saws, hedge-trimmers, brush cutters, grass trimmers; construction and building such as cutting-off power tools, concrete vibrators; food industry, such as fowl secateurs, sheep shears Endeavours have been made to achieve co-ordination with the relevant Technical Committees so that the safety requirements are compatible This standard is divided in the following parts: Part - Assembly power tools for non-threaded mechanical fasteners (former part 14) Part - Cutting-off and crimping power tools (former part 15) Part - Drills and tappers Part - Non rotary percussive power tools Part - Rotary, percussive power drills Part - Assembly power tools for threaded fasteners Part - Grinders Part - Sanders and polishers Part - Die grinders Part 10 - Compression power tools Part 11 - Nibblers and shears Part 12 - Small circular, small oscillating and reciprocating saws Part 13 - Fastener driving tools BS EN 792-2:2000+A1:2008 EN 792-2:2000+A1:2008 (E) Certain parts of EN 792 cover hand-held non-electric power tools, driven by internal combustion engines powered by gaseous or liquid fuel In these parts, the safety aspects relating to internal combustion engines are found in a normative annex The parts are type C standards and refer to pertinent European Standards of type A and B where such standards are applicable Scope The standard EN 792 applies to hand-held non-electric power tools driven by rotary or linear motors, powered by compressed air, hydraulic fluid and intended to be used by one operator and supported by: the operator's hand or hands, a harness, a suspension, e.g a balancer This part, EN 792-2, applies to non-electric, hand-held power tools without rotation, for cutting-off wires, cables, etc., and for crimping for example connectors to cable ends This part lists the significant hazards caused by such power tools and specifies safety requirements valid for different aspects of safety during their foreseeable lifetime Power tools covered by this part of the standard: crimping tools without a yoke, cutters, cutting-off tools, cutting pliers ”Double acting hydraulic rescue tools for fire and rescue service use” are not covered by this standard Special requirements and modifications on a hand-held power tool for the purpose of mounting it in a fixture are not covered by this part Normative references This European Standard incorporates by dated or undated reference, provisions from other publications These normative references are cited at the appropriate places in the text and the publications are listed hereafter For dated references, subsequent amendments to or revisions of any of the publications referred to in this European Standard are valid only when they are incorporated in this standard by amendment or revision For undated references the latest edition of the publication referred to, applies (including amendments) EN 292-1:1991, Safety of machinery - Basic concepts, general principles for design – Part 1: Basic terminology, methodology EN 292-2:1991, Safety of machinery - Basic concepts, general principles for design – Part 2: Technical principles and specifications BS EN 792-2:2000+A1:2008 EN 792-2:2000+A1:2008 (E) EN 563, Temperatures of touchable surfaces - Ergonomic data to establish temperature limit values for hot surfaces EN 614-1, Safety of machinery - Ergonomic design principles – Part 1: Terminology and general principles EN 1070, Safety of machinery - Terminology EN 12096, Mechanical vibration - Declaration and verification of vibration emission values EN ISO 4871, Acoustics - Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) !EN ISO 15744:2008, Hand-held non-electric power tools – Noise measurement code – Engineering method (grade 2) (ISO 15744:2002)" EN 28662-1, Hand-held portable power tools - Measurement of vibration at the handle – Part 1: General ISO 3857-3, Compressors, Pneumatic tools and machines, Vocabulary – Part 3: Pneumatic tools and machines ISO 5391, Pneumatic tools and machines – Vocabulary Terms and definitions For the purposes of this part of the standard, the following terms and definitions apply: 3.1 General terms and definitions 3.1.1 hand-held power tool: Machine driven by rotary or linear motors powered by compressed air, hydraulic fluid, gaseous or liquid fuel, electricity or stored energy (e.g by a spring) to mechanical work and so designed that the motor and the mechanism form an assembly that can easily be brought to its place of operation The hand-held power tool is operated by one or two hands NOTE Hand-held power tools driven by compressed air or gas are called pneumatic tools Hand-held power tools driven by hydraulic liquid are called hydraulic tools 3.1.2 inserted tool: Tool inserted in the hand-held power tool to perform the intended work 3.1.3 service tool: Tool intended for performing maintenance or service on the hand-held power tool 3.1.4 control device: Device to start and stop the hand-held power tool or to change the direction of the rotation or to control the functional characteristics such as speed and power 3.1.5 maximum operating pressure: Maximum pressure that a hand-held power tool may be operated at, as specified by the manufacturer 3.2 Terms and definitions related to cutting-off and crimping power tools 3.2.1 crimping tool without a yoke: Power tool with a mechanism to permanently fasten by crimping or clinching a connection element, e.g to a cable or a hose 3.2.2 cutting-off tool: Power tool where two jaws fully close the gap between them for cutting-off BS EN 792-2:2000+A1:2008 EN 792-2:2000+A1:2008 (E) 3.2.3 cutting pliers: Cutting-off tool whereby two angle-mounted jaws cut the work piece For other terms, see EN 1070 and also ISO 3857-3 and ISO 5391 For examples of power tools treated in this part see annex A List of hazards The following hazards can occur in the use of the cutting-off and crimping power tools Hazard type 4.1 Mechanical hazards - crushing - cutting - friction or abrasion hazard - loss of stability - whipping hose - ejection from high pressure hydraulic system - hose and hose coupling specifications 4.2 Electrical hazards 4.3 Thermal hazards - explosions - health damage due to hot or cold surfaces 4.4 Hazards caused by noise 4.5 Hazards generated by vibration 4.6 Hazards generated by materials and substances processed, used or exhausted - exhaust air or gas - lubricants - hydraulic fluid 4.7 Hazards caused by neglecting ergonomic principles - repetitive strain injuries - unsuitable postures - inadequate grip design and tool balance - neglected use of personal protection equipment Reference to safety requirement Information By design or for use guarding 5.1.3, 5.7.3 5.1.1 5.1.1 5.1.2 6.2.2 5.1.3 6.2.2 6.2.2 5.2 5.2 5.3 5.4 6.2.2 6.2.2 5.5.1 5.5.2 6.2.2 5.6.1, 5.6.2,5.6.3, 5.6.1 4.8 Hazards caused by failure of energy supply - unexpected return of energy supply after a breakdown - incorrect hydraulic fluid flow and outlet pressure 4.9 Hazards caused by missing and/or incorrectly positioned safety related means - start and stop device - unintentional start 6.2.2 6.2.2 6.2.2 6.2.2 5.7.1 5.7.2 6.2.2 BS EN 792-2:2000+A1:2008 EN 792-2:2000+A1:2008 (E) Safety requirements and measures 5.1 Mechanical safety 5.1.1 Surfaces, edges and corners Accessible parts of the power tool, except the inserted tool, shall not have sharp edges or angles or rough or abrasive surfaces, see 3.1 of EN 292-2:1991 5.1.2 Supporting surface and stability Power tools shall be so designed that they can be laid aside and remain in stable position on a plane surface 5.1.3 High pressure ejection Hydraulic systems of the power tool shall be enclosed so as to give protection against high pressure fluid ejection 5.2 Thermal safety Surface temperatures of parts of the power tool which are held during use or could be inadvertently touched shall follow the provisions of EN 563 NOTE The limit values for low temperatures are studied by CEN/TC 122 Power tools for use in potentially explosive atmospheres should comply with EN 1127-1 However because the suitability of a power tool for use in potentially explosive atmospheres will depend not only on the power tool but the inserted tool and the workpiece, it is not possible to give any detailed advice in this standard 5.3 Noise 5.3.1 General The emission of noise from a power tool shall be kept as low as possible The noise emission from using hand-held power tools emanates from three main sources: the hand-held power tool itself, the inserted tool, the workpiece NOTE 5.3.2 Generally, the manufacturer has no possibility of influencing the noise emitted by the processed workpiece Noise emitted by the hand-held power tool The noise emitted by the hand-held power tool itself can be divided into: noise from the motor, noise from exhaust air or gases at pneumatic tools, vibration induced noise BS EN 792-2:2000+A1:2008 EN 792-2:2000+A1:2008 (E) 5.6.3 Suspension device Provision shall be made, where appropriate, to enable the attachment to the power tool of a suspension device The fitting of a suspension device shall not introduce an additional hazard 5.7 Safety related measures and means 5.7.1 Start and stop device The power tool shall be equipped with a single control device to start or stop it It shall be arranged near the handle so that the operator can activate it without releasing the grip on the handle Each operation of the tool shall be initiated by actuating the start and stop device which shall return to the start position before a new or a continued operation can be initiated The start and stop device shall be in the stop position or immediately move to the stop position when the power tool is connected to the energy supply For power tools driven by an internal combustion engine, see C.3.5 5.7.2 Unintentional start The start and stop device shall be so designed, positioned or guarded that the risk of unintentional start is minimized Verification shall be made according to clause 7.3 5.7.3 Two-hand control Two-hand control according to type of EN 574 shall be required for power tools having a stroke of more than mm, if the power tool is designed to execute a complete stroke and where the stroke cannot be interrupted by releasing the start and stop device 6.1 Information for use Marking, signs and written warnings !Power tools shall be marked visibly, legibly and indelibly with the following minimum particulars: the business name and full address of the manufacturer and, where applicable, his authorized representative; designation of the machinery; the CE Marking (see Annex III); designation of series or type; serial number, if any; the year of construction, that is the year in which the manufacturing process is completed." The power tool shall be permanently marked with a graphical symbol, stating that the operator's instruction shall be read before work starts, according to annex B Other graphical symbols that can be used are shown in annex B 10 BS EN 792-2:2000+A1:2008 EN 792-2:2000+A1:2008 (E) 6.2 Instruction for use 6.2.1 General The instructions for use shall be drawn up by the manufacturer and contain: operator's instruction, maintenance instruction The operator's instructions shall be drawn up in according to 5.5.2 of EN 292-2:1991 and annex A, 1.7.4 and 2.2 of EN 292 2:1991 Concerning residual risks see 5.5 of EN 292-1:1991 6.2.2 Operator's instruction The operator's instruction shall include a description of the correct use of the power tool and make reference to the appropriate inserted tools The operator's instruction shall state that any other use is forbidden Foreseeable misuse of the power tool, which experience has shown to occur, shall be warned against !The operator's instruction shall give information on airborne noise emissions: the A-weighted emission sound pressure level at workstations, where this exceeds 70 dB (A); where this level does not exceed 70 dB (A), this fact shall be indicated; the peak C-weighted instantaneous sound pressure value at workstations, where this value exceeds 63 Pa (130 dB in relation to 20 µPa); the A-weighted sound power level emitted by the machinery, where the A-weighted emission sound pressure level at workstations exceeds 80 dB(A)." !The operator's instruction shall give information on vibration total value in the handles, including uncertainty of measurement." The reference numbers of the applied standards for noise and vibration measurements shall be given The operator's instruction shall recommend the use of ear protectors Warnings shall be given: that power tools are not generally insulated for coming into contact with electric power sources; that power tools shall not be used in explosive atmospheres unless specially designed for that purpose; that stored gas or fluid energy may cause a hazard; of the risk of cutting with tools with large dimensions; that tools shall not be operated if directed toward the operator or any other person; to beware of ejection of cuttings or chips and in each operation turn the head to avoid being exposed to this operation; to beware that working on brittle material can cause harmful splinter; 11 BS EN 792-2:2000+A1:2008 EN 792-2:2000+A1:2008 (E) of the risk of a whipping compressed air hose Instructions shall be given: to make sure that the fixation is secure, if the power tool is fixed to a suspension device; that power tools shall be isolated from the energy source before changing an inserted tool; release the start and stop device in case of failure of energy supply; that only lubricants recommended by the manufacturer shall be used; that at hydraulic tools only hydraulic fluids recommended by the manufacturer shall be used NOTE It is recommended to check with the manufacturer if non-flammable fluids can be used Information shall be given for hydraulic power tools regarding the design and dimension of couplings: specification of the coupling, specification of hoses with regard to pressure and flow, maximum inlet pressure, maximum flow, maximum inlet temperature of the inlet fluid 6.2.3 Maintenance instruction The maintenance instruction shall contain: instruction to keep the power tool safe by regular maintenance; information on when the regular maintenance shall be carried out; for instance after a specified time of operation, a specified number of cycles/operations, a stated number of times per year; instructions for disposal so as not to impose hazards to personnel and the environment; ! the specifications of the spare parts to be used, when these affect the health and safety of operators." Verification 7.1 Noise Compliance with 5.3 and 6.2.2 shall be verified as follows: An equivalent continuous A-weighted sound pressure level at workstation shall be measured, and stated according to !EN ISO 15744:2008" An A-weighted sound power level shall be measured and stated according to !EN ISO 15744:2008" The noise emission values shall be declared according to EN ISO 4871 12 BS EN 792-2:2000+A1:2008 EN 792-2:2000+A1:2008 (E) 7.2 Vibration Compliance with 5.4 and 6.2.2 shall be verified as follows: The vibration level at the handle of the power tool shall be measured and stated according to EN 28662-1 The vibration value shall be declared according to EN 12096 7.3 Unintentional start Compliance with 5.7.2 shall be verified as follows: The power tool shall be connected to the energy supply and placed in any position and pulled over the horizontal plane by its hose Continuous operation of the start and stop device shall then not occur 7.4 Structure of verification Safety requirement 5.1.1 Visual check Functional check Measurement Reference to clauses of this standard or to other standards X Surfaces, edges and angles 5.1.2 X Stability 5.1.3 X High pressure ejection 5.2 X EN 563 X !EN ISO 15744:2008" X EN 28662-1 Thermal safety 5.3 Noise 5.4 Vibration 5.6.1 X Handle 5.6.2 X X Control device 5.6.3 X Suspension device 5.7.1 X Start and stop device 5.7.2 X clause 7.3 Unintentional start 13 BS EN 792-2:2000+A1:2008 EN 792-2:2000+A1:2008 (E) Annex A (informative) Examples of power tools covered by this part E: crimping tool without a yoke E: cutting pliers F: machine de sertissage sans Cé F: pince coupante D: Crimpzange ohne Gegenlager D: Beisszange E: cutting-off tool(cutter) F: outil de coupe D: Seitenschneider 14 BS EN 792-2:2000+A1:2008 EN 792-2:2000+A1:2008 (E) Annex B (informative) Symbols for labels and signs Symbol Significance Colours B.1 The operator's instruction must be read before work starts Background: blue Engine oil Background: optional B.2 Corresponding standard Symbol: white ISO 7000-0248 Symbol: black B.3 Fuel Background: optional ISO 7000-0245 Symbol: black 15 BS EN 792-2:2000+A1:2008 EN 792-2:2000+A1:2008 (E) Annex C (normative) Safety requirements related to the internal combustion engines C.1 General This annex covers the safety requirements to internal combustion engines of hand-held power tools, both rotary and linear ones and powered by liquid or gaseous fuel C.2 List of hazards This list of hazards is specific to the case when the energy source is an internal combustion engine Hazard type Reference to safety requirement By design or guarding C.2.1 Mechanical hazards C.3.1 - incorrect carburettor adjustment C.2.2 Electric hazards C.3.2 Information for use - electric hazards C.2.3 Thermal hazards C.3.3 - radiation of heat sources C.2.4 Hazards generated by materials and substances processed, used or exhausted - resulting from contact with or inhalation of harmful fluids, gases, mists and fumes - fires or explosion hazards - incorrect fuel C.2.5 Hazards caused by functional disorders - resulting from unexpected ejection of fluid - break down of pressurized gas container C.2.6 Hazards caused by missing or incorrectly positioned safety related measures and means 16 6.2 BS EN 792-2:2000+A1:2008 EN 792-2:2000+A1:2008 (E) C.3 Safety requirements and measures C.3.1 Mechanical safety Carburettors or other fuel management system devices, if adjustable, shall be able to be adjusted from the outside without removal of casing parts and the control devices shall be easily and safely accessible C.3.2 Electrical safety The electrical equipment in the internal combustion engine shall be insulated and covered so that the risk of electric shock or arcing is removed C.3.3 Thermal safety Radiation of heat from hot surfaces and exhaust gases shall not cause a hazard to the operator under normal working conditions C.3.4 Materials and substances processed, used or exhausted Refillable tanks for fuel and oil shall fulfil the following requirements: the openings both for fuel and oil shall be placed so that filling can be made without obstacles and spillage is avoided; the openings shall be so positioned that no spilling falls on hot surfaces; the tank caps shall have retainers to prevent them from being lost; the opening of the fuel tank shall be large enough to enable the filling with a standard canister with a nozzle spout according to ISO 9158 or ISO 9159 No apparent leakage of fuel from the fuel tank is allowed under normal operating conditions Leakage from the venting hole in the cap is accepted C.3.5 Missing or incorrectly positioned safety related measures and means When releasing the start and stop device, the movement of the inserted tool is allowed to continue at idling speed, if it cannot cause any hazard C.3.6 Pressurized gas container NOTE Containers for liquid petrol gas (LPG) shall fulfil national regulations C.4 Information for use C.4.1 Markings, signs, warnings The openings for fuel and oil shall be clearly and indelibly marked Marking on the fuel tank and lubrication tank openings shall be a symbol according to annex B Devices for adjustment of carburettor or other fuel metering devices shall be clearly and indelibly marked and indicated on the ICE driven power tool 17 BS EN 792-2:2000+A1:2008 EN 792-2:2000+A1:2008 (E) Symbols used shall be clear, unambiguous and be explained in the instruction handbook C.4.2 Instruction for use C.4.2.1 Operator's instruction The operator's instruction for ICE driven power tools shall contain in addition to that specified in clause 6, the following information: warning against the risk of fire when spillage of fuel occurs; warning against smoking when filling with fuel; warning against contact of fuel and oil with the skin; warning against use of an ICE driven power tools in unventilated environment, in closed pits, where the surrounding hinders or prevents air circulation The use of an exhaust hose can in many cases be recommended; instructions how to transport the ICE driven power tools so minimize the risk of fuel leakage; specification of the fuel quality, i.e for petrol, lead content, octane number and for LPG the specified class; specify that empty liquid petrol gas containers shall be taken care of and sent back to the retailer C.4.2.2 Maintenance instructions The maintenance instruction shall contain instructions on checking of electrical cables and electric insulation 18