This comprehensive repair manual provides in-depth information for a wide range of Volvo Penta stern drive models, spanning the years 1968 to 1991. Covering both engine and stern drive components, this manual is an essential resource for boat owners, mechanics, and enthusiasts seeking to maintain, repair, or restore their vessels. The manual delves into a multitude of topics, including: * **General Information:** Overview of Volvo Penta models, specifications, and safety guidelines. * **Routine Maintenance:** Detailed instructions for regular servicing, including oil changes, filter replacements, and fluid checks. * **Engine Removal and Installation:** Step-by-step procedures for removing and reinstalling engines, ensuring proper alignment and connections. * **Fuel System:** Troubleshooting and repair information for fuel lines, pumps, injectors, and carburetors. * **Lubrication and Cooling System:** Comprehensive coverage of engine oil systems, cooling water circuits, and related components. * **Engine Specifications:** Detailed technical data on engine dimensions, power outputs, and performance parameters. * **Transmission, Drive Chain & Sprockets:** Insights into transmission operation, drive chain maintenance, and sprocket adjustments. * **Steering System:** Guidance on steering system components, troubleshooting, and repair techniques. * **Shocks:** Information on shock absorber types, maintenance, and replacement procedures. * **Body Work:** Instructions for repair and maintenance of fiberglass hulls, decks, and other structural components. * **Intake & Exhaust:** Detailed descriptions of intake and exhaust systems, including troubleshooting and repair methods. * **Electrical System:** Comprehensive coverage of electrical wiring diagrams, component identification, and troubleshooting procedures. * **Advanced Troubleshooting:** In-depth analysis of common problems, diagnostic techniques, and repair strategies. Beyond these core topics, the manual offers additional valuable information, empowering individuals to confidently diagnose and resolve a wide range of issues. By providing detailed diagrams, illustrations, and clear instructions, this manual serves as a valuable resource for both novice and experienced boat owners and mechanics.

The **1968-1991 Volvo Penta Stern Drive Repair Manual** is a comprehensive guide for mechanics and boat owners seeking to maintain, repair, and troubleshoot the various stern drive systems produced by Volvo Penta during this era. This period saw the development and refinement of iconic stern drive models like the AQ series, which revolutionized boating by offering a compact and efficient alternative to traditional inboard engines. The manual covers a wide range of models, including the AQ115, AQ120, AQ130, AQ140, AQ170, AQ171, and AQ200, offering detailed information on their construction, operation, and potential issues. It acts as a valuable resource for understanding the intricate workings of these stern drive units, from their internal components like the transmission, the cooling system, and the drive shaft, to the external features like the steering and the propeller. The repair manual goes beyond simple maintenance procedures, offering in-depth troubleshooting guides with detailed diagrams and explanations. It covers a wide range of potential problems, from engine starting issues and fuel system malfunctions to overheating and gear shifting difficulties. The manual also provides detailed specifications for each model, including dimensions, capacities, and tolerances, facilitating accurate repair and replacement when necessary. Its comprehensive approach and focus on practical application make it an indispensable tool for anyone working on these Volvo Penta stern drives, whether it's a seasoned mechanic or an enthusiastic DIY boat owner.