This comprehensive service and repair manual provides detailed instructions and diagrams for servicing and repairing your Yamaha 60C, 70C, and 90C outboard motors manufactured in 2005. The manual covers a wide range of topics, including general information, identification, serial numbers, safety precautions, tools, measurements, specifications, periodic inspection and adjustment, fuel system, engine overhaul, lower unit, bracket unit, hydraulic tilt unit, electrical components, trouble analysis, and more.

The manual is organized into clear and concise chapters, making it easy to find the information you need. Detailed illustrations and exploded diagrams guide you through each step of the repair process, ensuring that you have a complete understanding of the procedures involved. Whether you are a professional mechanic or a DIY enthusiast, this manual is an invaluable resource for maintaining and repairing your Yamaha outboard motor.

The Yamaha 60C, 70C, and 90C outboard motors, produced in 2005, are powerful and reliable engines designed for a variety of recreational boating applications. These models are part of Yamaha's popular four-stroke line, known for their smooth operation, fuel efficiency, and low emissions. The 60C, 70C, and 90C all share a similar design, featuring a 1.8L four-cylinder engine configuration, a single overhead camshaft, and a computerized ignition system. They differ primarily in their output power, with the 60C producing 60 horsepower, the 70C generating 70 horsepower, and the 90C delivering 90 horsepower. This range of power options allows boaters to select the optimal engine for their specific needs, whether it be for fishing, cruising, or watersports.

These outboard motors boast several advanced technologies contributing to their performance and durability. The Yamaha "Lean Burn" system optimizes fuel consumption for enhanced economy, while the "Variable Camshaft Timing" (VCT) system adjusts the valve timing for increased power and efficiency across the RPM range. Additionally, Yamaha's "Electronic Fuel Injection" (EFI) system ensures precise fuel delivery for optimal combustion and reduced emissions. The robust construction includes a corrosion-resistant aluminum alloy block and cylinder head, as well as durable saltwater-resistant components, making these engines well-suited for both freshwater and saltwater environments. The service and repair manual provides detailed instructions, diagrams, and specifications for maintaining and troubleshooting these popular Yamaha outboard motors. With this comprehensive resource, boat owners can ensure the longevity and optimal performance of their 60C, 70C, or 90C engine.