This manual pertains to the BOBCAT 553 AF SERIES SKID STEER LOADER, specifically models with serial numbers 528111001 and above. This equipment is engineered for robust performance in demanding operational environments. Its design prioritizes durability and efficiency, making it a reliable choice for various industrial and construction applications. The AF SERIES represents a commitment to quality manufacturing and operational excellence, ensuring consistent performance across its intended uses. The purpose of this manual is to provide comprehensive information for the maintenance and repair of your BOBCAT 553 AF SERIES SKID STEER LOADER. It covers essential details regarding parts identification and selection, crucial for ensuring the correct components are used during servicing. By referencing the information contained herein, owners and technicians can effectively manage the upkeep of their equipment, contributing to its longevity and optimal functionality.