Changes to Council Directive 84/538/EEC of 17 September 1984 on the approximation of the laws of the Member States relating to the permissible sound power level of lawnmowers
EU Directive 1984/538
Made by Council Directive 88/180/EEC of 22 March 1988 amending Directive 84/538/EEC on the approximation of the laws of the Member States relating to the permissible sound power level of lawnmowers
From legislation.gov.uk's record of changes, the official one: see it there.