This Service Repair Manual provides comprehensive information for the Bobcat 553 Skid Steer Loader, specifically for units with serial numbers 520411001 and above. Engineered for reliability and performance, the 553 Skid Steer Loader is a versatile machine designed for a wide range of demanding tasks. Its robust construction and efficient operation make it an essential tool for construction, landscaping, and agricultural applications. This manual details the engineering quality and unique operational capabilities that define the Bobcat brand. The purpose of this manual is to serve as a definitive resource for maintaining and repairing your Bobcat 553 Skid Steer Loader. It covers essential areas including preventive maintenance, detailed engine service, hydraulic system diagnostics, hydrostatic and drive system repairs, chassis and frame information, and electrical system troubleshooting. With clear instructions and technical specifications, this manual empowers owners, technicians, and mechanics to ensure the longevity and optimal performance of their equipment through quick and easy problem-solving.