The 353 / 373 Compact Excavator, produced in 2009 (Revision H), represents robust engineering designed for demanding work environments. These excavators are built with a focus on reliability and efficiency, offering versatile configurations that include options for rubber or steel tracks, short or long dipper arms, and a choice between a canopy or a fully enclosed cab. Notable features within the operator station, such as optional mirrors and sun visors, enhance user comfort and control. The sophisticated hydraulic system, comprising numerous specialized components, and the comprehensive electrical system ensure optimal performance across various applications, solidifying the excavators' reputation for quality and durability. This Parts Manual, in English, is an essential resource for maintaining the 353 / 373 Compact Excavator. It provides detailed information on all components, including chassis elements, undercarriage options, hydraulic systems, and electrical assemblies. The manual is organized to facilitate easy access to specific parts and their identification, supported by alphabetical and numerical indexes. By detailing the various serial number ranges for Tier I, Tier II, and Tier III engine configurations, this document is crucial for owners, mechanics, and technicians to ensure correct part selection, prevent premature failures, and perform efficient maintenance, ultimately saving time and money.