This comprehensive Yamaha 70 HP 2-stroke Marine Outboard Service Repair Manual covers models manufactured between 1984 and 1996. It provides detailed instructions and procedures for the repair and overhaul of your outboard engine, encompassing a wide range of topics. The manual assumes a basic understanding of general automotive practices but focuses on the specific aspects of Yamaha 70 HP outboards. You'll find instructions for components manufactured specifically for Yamaha 70 HP 2-stroke outboards, as well as instructions from respective component manufacturers for proprietary parts. This allows you to understand the function of each component and assess the overall performance of your engine. This manual provides a complete guide to maintaining and repairing your Yamaha 70 HP 2-stroke outboard, including: Tune-ups and maintenance procedures for all covered years. Detailed removal and installation procedures for various components. Comprehensive assembly and disassembly instructions. In-depth coverage of the fuel system, ignition system, lubrication system, exhaust system, electrical system, and body. Troubleshooting guides and diagnostics for common problems. Specifications and procedures that were previously only available to authorized Yamaha dealers. This manual is an invaluable resource for anyone who wants to maintain and repair their Yamaha 70 HP 2-stroke outboard. It provides the most reliable information and empowers you to perform repairs with confidence, saving you time and money in the long run.

The Yamaha 70 HP 2-stroke outboard motor, produced between 1984 and 1996, is a reliable and powerful workhorse for a variety of boating applications. This iconic engine, renowned for its durability and performance, is known among boaters for its smooth operation and impressive power-to-weight ratio. This 70 HP outboard motor features a robust design with a two-cylinder, 703cc engine that provides ample power for navigating rivers, lakes, and coastal waters. The 2-stroke design utilizes a fuel-oil mixture, ensuring a quick and efficient power delivery, perfect for recreational fishing, cruising, and waterskiing. This model boasts a compact and lightweight design, making it ideal for smaller boats, and its ease of maintenance further contributes to its popularity among boaters. Beyond its power and efficiency, the Yamaha 70 HP 2-stroke outboard motor is known for its user-friendly features. The engine's controls are simple and intuitive, making it easy to operate even for novice boaters. Its reliable performance and minimal maintenance requirements contribute to a pleasurable boating experience. However, as with all older machinery, maintaining proper care and regular servicing is essential for optimal performance and a long service life. This specific service repair manual, designed for the 1984-1996 models, offers comprehensive instructions and detailed diagrams to assist owners with routine maintenance, troubleshooting, and repair procedures. The manual's comprehensive coverage allows even novice mechanics to handle basic maintenance and repairs, ensuring the long-term performance and longevity of the engine. This investment in a service repair manual is essential for any owner of a Yamaha 70 HP 2-stroke outboard motor, promoting a safe and enjoyable boating experience.