This comprehensive Yanmar Crawler Backhoe service manual covers the B12-P, B12-PR, B17-P, and B17-PR models, equipped with the 3TNA72L-UBA and 3TNA72L-UBB engines. Designed for both professional technicians and first-time owners, this manual provides clear and detailed instructions for a wide range of maintenance and repair procedures. It includes a complete parts catalog, ensuring you have easy access to all the information needed to identify and order the correct components. Additionally, the manual features a comprehensive wiring diagram, offering valuable insights into the machine's electrical system. By utilizing this service manual, you can perform routine and preventative maintenance, saving time and money in the long run by preventing premature failure and unnecessary repairs.

The Yanmar B12-P, B12-PR, B17-P, and B17-PR crawler backhoes are compact and versatile machines designed for a wide range of excavation, trenching, and loading applications. These backhoes are characterized by their powerful Yanmar diesel engines and robust construction, offering exceptional performance and durability. The B12 series models are equipped with a 1.2-liter engine, while the B17 series features a 1.7-liter engine, both providing ample power for demanding tasks. The B12-P and B17-P models are standard configurations, while the B12-PR and B17-PR models include additional features such as a rear ripper attachment, which enhances their versatility for breaking up compacted soil and rock. Yanmar's B12-P, B12-PR, B17-P, and B17-PR crawler backhoes are designed with operator comfort and ease of use in mind. The spacious operator cab provides excellent visibility and features a comfortable seat, intuitive controls, and ergonomic design. The backhoe's compact dimensions and tight turning radius make it ideal for working in confined spaces, while its heavy-duty undercarriage and robust components ensure long-lasting performance. The B12 and B17 series backhoes offer a variety of optional attachments, including a hydraulic breaker, rock bucket, and various digging and loading buckets, further expanding their versatility and capabilities for a wide range of applications.