This workshop service repair manual covers the Mercury Mercruiser Alpha One Generation II Sterndrive, produced between 1991 and 2001. Engineered for reliability and performance, this sterndrive unit features a two-piece drive shaft and gear housing, a robust internal shift mechanism, and built-in water intakes on the lower unit. It supports various Mercury/Mariner marine engines and offers power trim and tilt functionality, along with standard Alpha Drive mounting compatibility. The Alpha One Generation II is designed for efficient propulsion and incorporates features like sacrificial anodes for corrosion protection and a propeller hub with a shear pin for damage mitigation. This comprehensive English-language manual provides essential information for the maintenance, repair, and servicing of your Alpha One Generation II Sterndrive. It details critical procedures including regular lubrication, impeller replacement, gear lube changes, and anode inspection. Technical specifications, troubleshooting guidance, and safety recommendations are also included to ensure optimal operation and longevity of the unit. Whether you are an owner, a professional mechanic, or a technician, this manual serves as an indispensable resource for understanding and maintaining the propulsion system.