ISO 7293:2021 pdf download – Forestry machinery — Portable chain- saws — Engine performance and fuel consumption. 1 Scope This document specifies a method for testing the performance and fuel consumption of internal combustion engines used to power portable chain-saws. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 5164, Petroleum products — Determination of knock characteristics of...