This SAE Recommended Practice is intended for the determination of the losses of hydrocarbon fluids by permeation through small diameter fuel hose typically 4.75mm ID or less and typically used on Small Off-Road Engines (SORE) less than 19 kW as regulated under 40 CFR Part 1054. Purpose This document addresses specific issues associated with weight loss permeation testing of small ID fuel hose. Specifically this document is understood to be an improvement over the SAE J30 weight loss test procedure when used on small ID fuel hoses typically less than 4.75mm ID.