This workshop service repair manual covers Volvo Penta AQ125, AQ145, and A B marine engines. Designed for service and repair, these engines are recognized for their robust engineering and reliability in marine applications. This comprehensive guide ensures that owners and operators can maintain their equipment to the highest standards. This English-language manual provides complete A-Z repair and service procedures, including step-by-step instructions and detailed pictures. It is intended to assist owners, mechanics, and technicians in performing all necessary maintenance and repairs. The manual is compatible with all PC and MAC computers, tablets, and mobile phones, facilitating easy access to critical information for all models, engines, trim, and transmission types.