The requirements of this Standard1 apply to: a) portable hand-supported gasoline powered grass trimmers2 intended for use with flexible nonmetallic line@ or other types of nonmetallic cutting attachments@ and b) portable@ hand-supported@ gasoline-powered brushcutters intended for use with cutting blades and other cutting attachments. NOTE - If a grass trimmer is marketed by the manufacturer as convertible to a brushcutter@ then the converted unit shall comply with requirements for brushcutters and vice-versa. A convertible unit may be marketed as a grass trimmer or a brushcutter without including the devices required for conversion in the packaging@ provided the operator manual clearly addresses the need to acquire and use the required conversion devices and the manufacturer makes such devices available as optional equipment. 1) Metric conversions are shown in brackets and are included for information only. 2) Trimmers and Brushcutters with back mounted power units are not covered by this standard.