Welcome to the ultimate technical specification database for vintage Yamaha outboard motors manufactured between 1984 and 1996. This era marked Yamaha’s official full-scale entry into the US marine market, establishing their legendary reputation for lightweight 2-stroke reliability, Precision Blend oil injection, and high-output V6 performance.
Our comprehensive archive covers models ranging from portable 2 HP single-cylinder trolling motors up to the flagship 250 HP V6 commercial and performance engines. Explore exact factory technical data including spark plug gap settings, ignition timing, recommended gearcase lubricant capacity, carburetor fuel specs, and oil-to-gas mixture ratios (50:1 pre-mix vs. Precision Blend autolube setups).