This Saudi standard specifies a bench method for testing the categories of engines indicated below which are intended for use in agricultural tractors and machines and which may be fitted with a charging device using a mechanical supercharger or turbo charger: a) spark-ignition engines; b) compression-ignition (diesel) engines; Engines given in a) and b) can be of the following types: c) reciprocating internal combustion engines; d) rotary piston internal combustion engines. In particular, it allows curves of net power and specific fuel consumption at full load to be plotted as functions of engine speed. Note: This standard is in conformity with the Gulf standard on “Road Vehicles - Engine Test Code - Net Power”; it relates to tests on an engine capable of being fitted into several types of agricultural tractors and machines