This part of ISO 17101 gives specifcations and acceptance criteria for thrown-object testing of rotary mowers used in agriculture. Examples of machines are shown in AnnexA.It is not applicable to the following:- fail mowers;- mowers with an articulated arm;- mowers with one or more vertical axis designed for mulching;- pedestrian-controlled motor mowers;- lawn mowers or machines designed as lawn mowers;- inter-row mowing units;- machines designed for highway and road maintenance only.NOTE 1 If a machine is also designed for use outside agriculture, in addition to the thrown-object test given in this part of ISO 17101, other thrown-object tests might apply.NOTE 2 Thrown-object tests and acceptance criteria for fail mowers are dealt with in ISO 17101-2.NOTE 3 Thrown-object tests and acceptance criteria for rotary mowers which have a tip circle greater than 1 000 mm are dealt with in ISO 4254-13.