The weight of a 90 horsepower, 2-stroke Yamaha outboard motor varies depending on the specific model and year. Factors influencing weight include the presence of power trim and tilt, oil injection systems, and the overall design. Generally, these outboards weigh between 260 and 330 pounds (approximately 118 to 150 kilograms). Consulting official Yamaha specifications for the exact model in question is essential for accurate information.
Knowing the weight of an outboard motor is crucial for several reasons. Proper boat balance and performance depend on accurate weight distribution. Exceeding the boat’s recommended transom weight can lead to instability and safety hazards. Additionally, weight information is vital for trailering and transport, ensuring the towing vehicle and trailer are adequately equipped. Historically, 2-stroke outboards were favored for their lighter weight compared to 4-stroke counterparts, though advancements in 4-stroke technology have narrowed this gap.