This comprehensive service manual covers the New Holland Construction Excavator models E265B and E305B. Designed as an essential reference tool, it provides detailed information to assist users in managing service, repair, and maintenance costs. The manual aims to empower owners and technicians with the knowledge to perform necessary tasks efficiently, thereby reducing expenditure on labor. The scope of this manual is extensive, encompassing over 760 pages of detailed content. Key sections include safety precautions, operational principles, system overviews, component operation, operational performance testing, troubleshooting guides, and detailed repair instructions for the upperstructure, undercarriage, and front attachment. This manual serves as a complete resource for all aspects of service, repair, and maintenance for these New Holland excavator models.