Specifies dimensions and requirements for power take-off and for front three-point linkages in association with a power lift for the attachment of implements or equipment to the front of agricultural wheeled tractors. It is not applicable to tractors which are designed to run in two directions, where either end can be considered to be the front or rear; in this case ISO 500 ANSI/ASABE AD500-1:2004 W/Cor.1, ASABE/ISO 500-2:2004, ASABE/ISO 500-3:2004 and ISO 730 ISO 730-1 apply