This comprehensive Yamaha 70N 70hp 2 Stroke Outboard Motor Workshop Service Repair Manual is designed for 1987 models and provides detailed instructions for every service and repair procedure. From basic maintenance to complex repairs, this manual offers step-by-step guidance with clear illustrations to simplify the process. You'll find detailed instructions on all aspects of servicing and repair, including: * **Engine Disassembly and Reassembly:** Learn how to take apart and put back together your outboard motor with precision, ensuring smooth operation. * **Fuel System Repair:** Diagnose and fix issues with fuel lines, carburetor, and other fuel system components to maintain optimal performance. * **Ignition System Troubleshooting:** Troubleshoot and repair any problems with the ignition system, including spark plugs, coils, and wiring, for a reliable spark. * **Cooling System Maintenance:** Understand how the cooling system works and learn how to maintain it properly to prevent overheating. * **Electrical System Repair:** Diagnose and repair electrical problems, including wiring, switches, and gauges. * **Transmission Maintenance:** Learn how to inspect and service the transmission, ensuring smooth gear shifting. * **Steering and Control System Repairs:** Find detailed instructions on maintaining and repairing the steering and control system for safe and responsive operation. This manual covers all models, trim levels, and transmission types of the Yamaha 70N 70hp 2 Stroke Outboard Motor for 1987. Save money and gain the confidence to handle your own repairs with this comprehensive and easy-to-follow manual.

The Yamaha 70N, a 70 horsepower, two-stroke outboard motor, was an iconic model produced by Yamaha Motor Corporation in the mid-1980s. Designed for a range of marine applications, including fishing boats, recreational vessels, and smaller commercial crafts, the 70N became renowned for its power, reliability, and ease of maintenance. It featured a robust and compact design, incorporating a single cylinder, air-cooled powerhead with a displacement of 686cc. The 70N was equipped with a direct-drive system, utilizing a simple and efficient gear reduction assembly for propelling the boat. Its two-stroke engine, known for its quick acceleration and ample torque, made it a popular choice for anglers and recreational boaters alike. The Yamaha 70N was a popular choice for its balance of power and fuel efficiency. Its durability and reliability were hallmarks of this model, with Yamaha engines being renowned for their robust construction and longevity. While the 70N was a straightforward and user-friendly engine, proper maintenance was crucial for ensuring its long life. The comprehensive workshop service repair manual, specifically designed for the 1987 model year, provided a detailed guide for all aspects of maintenance, repair, and troubleshooting. This manual, a valuable resource for both experienced mechanics and DIY enthusiasts, contained detailed diagrams, step-by-step instructions, and technical specifications, making it an essential companion for anyone working on this iconic Yamaha outboard motor.