本文件规定了便携式手持式电动割草机和割草机的设计和制造的安全要求及其验证措施，这些割草机和割草机带有背包式内燃机电源，以及电源和切割附件（以下简称“机器”）之间的机械动力传输。规定了消除或减少因使用这些机器而产生的危险的方法，以及制造商提供的有关安全工作实践的信息类型。 本文件与ISO 11806-1:2021（见4.1）的相关条款一起处理了所有重大危险、危险情况和危险事件，背包动力装置的全身振动除外，这些机器在按预期使用时以及在制造商合理预见的误用条件下使用。 注？1？出版时，没有测量背包动力装置全身振动的标准化测试程序。 注2:重要危险清单见附录A和ISO 11806-1:2021附录A。 本文件适用于出版日期后制造的便携式、手持式、电动割草机和割草机。 本文件不适用于配有金属切割附件的机器，该附件由多个零件组成，如旋转链或连枷刀片。

This document specifies safety requirements, and measures for their verification, for the design and construction of portable, hand-held, powered brush-cutters and grass-trimmers with a backpack-mounted combustion engine power source and mechanical power transmission between the power source and the cutting attachment (hereafter referred to as “machine”). 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 document, taken together with the relevant clauses of ISO 11806-1:2021 (see 4.1), deals with all significant hazards, hazardous situations and hazardous events, with the exception of whole-body vibration from the backpack power unit, relevant to these machines when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer. NOTE？1？A standardized test procedure for measuring whole-body vibration from the backpack power unit is not available at the time of publication. NOTE？2？See Annex？A, together with ISO 11806-1:2021, Annex？A, for a list of significant hazards. This document is applicable to portable, hand-held, powered brush-cutters and grass-trimmers manufactured after its date of publication. This document is not applicable to machines equipped with metallic cutting attachments consisting of more than one piece, such as pivoting chains or flail blades.