This manual covers the VMX12, commonly known as the V-Max, produced from 1985 to 2007. Renowned as a groundbreaking 'Muscle Bike' or 'Power Cruiser', the VMX12 is characterized by its aggressive styling, potent 1198cc V4 engine featuring the distinctive V-Boost system for enhanced acceleration, and reliable shaft drive. This motorcycle was designed to deliver raw power and an imposing presence, making it a unique and iconic machine in the powersports world. This comprehensive factory service and repair manual provides essential information for maintaining and repairing your VMX12. It details engine systems, including the V-Boost, transmission and drivetrain, chassis and suspension, braking, and electrical systems. The manual includes routine maintenance procedures, detailed repair instructions, troubleshooting guides for common issues, and critical technical specifications. With over 500 pages of in-depth coverage, this English-language manual is an indispensable resource for owners and technicians alike.