Historical
SAE J 1940-2002 (SAE J1940-2002)
Small Engine Power and Torque Rating Procedure
This SAE standard is applicable to small spark and compression ignition engines, having a maximum of 1.0 L sweep volume displacement, which are commonly operated outdoors, powering lawn and garden, construction, and general utility equipment. It is not intended to cover engines powering boats.
Society of Automotive Engineers [sae]