Husqvarna 455e-series Rancher TrioBrake Operator's Manual page 8

KEY TO SYMBOLS
You will find the following labels on your chain saw:
EPA III
The Emissions Compliance Period referred to on the
Emission Compliance label indicates the number of
operating hours for which the engine has been shown to
meet Federal emissions requirements.
Maintenance, replacement, or repair of the emission
control devices and system may be performed by any
nonroad engine repair establishment or individual.
8 – English 1153598-95 Rev.1 2010-08-25