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. EFFECTIVE MAY 15, 2011 F115 Redesigned for Greater Effi ciency The F115 delivers on Yamaha’s desire to make each new generation of outboards lighter and more effi cient. The new F115 started with the venerable DOHC in-line, four-cylinder 16-valve engine that set the standard for reliability and durability, then added new technologies to make a highly effi. Commercial One Year This document contains many of Yamaha’s valuable trademarks. It may also contain trademarks belonging to other companies. Any references to other companies or their products are for identifi cation purposes only, and are not intended to be an endorsement.