NS EN 14910 : 2007 + A1 2009

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 List of significant hazards
5 Safety requirements and/or measures and means of
  verification
  5.1 General
  5.2 Guards
       5.2.1 General
       5.2.2 Power driven components (other than the
              cutting means)
       5.2.3 Guarding of cutting means
       5.2.4 Hot surfaces
  5.3 Protection from exhaust fumes
  5.4 Liquid spillage
  5.5 Tank openings
  5.6 Controls
  5.7 Electrical requirements for battery circuits
       and high tension ignition circuits
       5.7.1 Electrical cables
       5.7.2 Battery installation
       5.7.3 Overload protection
       5.7.4 Terminals and un-insulated electrical parts
       5.7.5 High voltage parts
  5.8 Engine stopping and starting
  5.9 Handle construction
  5.10 Vibration
       5.10.1 Reduction by design and protective measures
       5.10.2 Reduction by information
       5.10.3 Vibration measurement
  5.11 Noise
       5.11.1 Reduction as a safety requirement
       5.11.2 Noise emission measurement
  5.12 Cutting means
       5.12.1 General
       5.12.2 Cutting elements
  5.13 Mechanical strength and rigidity
       5.13.1 General
       5.13.2 Cutting means guard (mechanical strength
              and rigidity)
       5.13.3 Mechanical strength of cutting head
6 Information for use
  6.1 Instructions for use
  6.2 Marking
       6.2.1 Minimum marking
       6.2.2 Warnings
       6.2.3 Cutting head
       6.2.4 Marking durability
       6.2.5 Test
Annex A (normative) Vibration
  A.1 Quantities to be measured
  A.2 Instrumentation
       A.2.1 General
       A.2.2 Fastening of transducer
       A.2.3 Calibration
  A.3 Measurement direction and measurement location
       A.3.1 Measurement direction
       A.3.2 Measurement location
  A.4 Test procedure
       A.4.1 Determination of working procedure
       A.4.2 Test method
  A.5 Measurement procedure
  A.6 Determination of the measurement result
Annex B (normative) Noise test code - Engineering method
        (grade 2)
  B.1 General
  B.2 Scope
  B.3 Sound power level determination
  B.4 A-weighted emission sound pressure level
       determination
  B.5 Requirements for test floor
       B.5.1 Artificial surface
       B.5.2 Natural grass
  B.6 Installation, mounting and operating conditions
  B.7 Information to be recorded and reported
  B.8 Measurement uncertainties and declaration of
       noise emission values
Annex C (informative) Example of a material and
        construction fulfilling the requirements
        for an artificial surface as required by B.5.1
  C.1 Material
  C.2 Construction
Annex D (normative) Calculation of kinetic energy
Annex E (normative) Safety signs for use on trimmers
Annex F (informative) Safety instructions
  F.1 Introduction
  F.2 General provisions
  F.3 Safe operating practices
       F.3.1 Training
       F.3.2 Preparation
       F.3.3 Operation
       F.3.4 Maintenance and storage
Annex ZA (informative) Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 98/37/EC, amended by Directive 98/79/EC
Bibliography

Describes all significant hazards, hazardous situations and events relevant to walk-behind trimmers, powered by a combustion engine, with cutting means using non-metallic filament line or freely pivoting non-metallic cutter(s), of which the cutting elements rely on centrifugal force to achieve cutting with the kinetic energy of a single cutting element not exceeding 10 J, designed for cutting grass or similar plant material, when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer.