This workshop service manual provides comprehensive information for the Volvo Penta 251DOHC. Designed for internal combustion applications, this model represents a commitment to robust engineering and reliable performance. While specific production years and detailed technical specifications are not provided, the inherent quality of Volvo Penta products ensures a dependable operational experience for its intended use. This manual serves as an essential resource for owners, technicians, and mechanics. It covers critical maintenance procedures, diagnostic troubleshooting, and technical specifications necessary for the upkeep and repair of the Volvo Penta 251DOHC. By following the guidelines and procedures outlined within, users can ensure optimal performance, longevity, and safety of the unit.