The weight of a 90 horsepower, four-stroke Yamaha outboard motor varies depending on the specific model and year. Factors influencing weight include the presence of power trim and tilt, the shaft length (short, long, or extra-long), and any additional features. Consulting a Yamaha dealer or the official Yamaha Outboards website for the specific model in question will provide the most accurate weight information. General ranges for this class of outboard are typically available online through boating forums and marine retailers. Understanding the weight is crucial for proper boat balance, performance, and safe trailering.
Knowing the outboard motor’s weight is essential for several reasons. Correct weight distribution on the transom affects boat stability and handling. Exceeding the boat’s maximum recommended transom weight can lead to unsafe operating conditions. Additionally, accurate weight information is necessary for calculating towing capacity and ensuring proper trailer selection. Historically, outboard motors have become lighter and more fuel-efficient due to advancements in materials and engineering. This focus on weight reduction enhances boat performance and fuel economy.