Update #1 was published as notification that this is now a National Standard of Canada
1.1 This Standard applies to portable, handheld, fuel- and electrically powered chain saws. It describes safety requirements for the design of chain saws and includes recommendations pertaining to their safe operation.
1.2 In addition to the applicable requirements of this Standard, the requirements of CSA Z62.3 apply to all chain saws. The requirements specified in CAN/CSA-C22.2 No. 147 apply to electrical (Class 2) chain saws.
1.3 In CSA Standards, .shall. is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; .should. is used to express a recommendation or that which is advised but not required; and .may. is used to express an option or that which is permissible within the limits of the standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Legends to equations and figures are considered requirements.
1.4 The values given in SI (metric) units are the standard. Where values are given in parentheses, they are for information only.