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  2. Yamaha XT250 - Wikipedia

    en.wikipedia.org/wiki/Yamaha_XT250

    The XT250 is branded the SEROW 250 in Japan. In 2013, the USA XT250 received a fuel-injected engine. In January 2020, Yamaha Japan released the Serow Final Model, discontinuing the little bike due to increasing emission requirements. This is its final year. [5] Yamaha US has continued the model unchanged. (For the origin of the name, see serow.)

  3. Critical engine - Wikipedia

    en.wikipedia.org/wiki/Critical_engine

    The critical engine of a multi-engine fixed-wing aircraft is the engine that, in the event of failure, would most adversely affect the performance or handling abilities of an aircraft. On propeller aircraft, there is a difference in the remaining yawing moments after failure of the left or the right (outboard) engine when all propellers rotate ...

  4. Yamaha Genesis engine - Wikipedia

    en.wikipedia.org/wiki/Yamaha_Genesis_engine

    "Cutaway of Yamaha Genesis inline-four 20-valve engine" The DOHC Genesis engine has five valves per cylinder and downdraft carburetors. Yamaha adopted the 5-valve concept, using three intake valves and two exhaust valves per cylinder, because it allowed both excellent volumetric efficiency and high RPM. As designers began to appreciate the ...

  5. Harris Performance Products - Wikipedia

    en.wikipedia.org/wiki/Harris_Performance_Products

    Harris Performance Products are a British-based motorcycle racing and parts manufacturer. The business started in Roydon , Essex , England making replacement chassis for road racing , housing Yamaha TZ250/TZ350 engines using a monoshock rear suspension layout. [ 1 ]

  6. Outboard motor - Wikipedia

    en.wikipedia.org/wiki/Outboard_motor

    Basic parts of an outboard motor. An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. They are the most common motorised method of propelling small watercraft.

  7. Yamaha XTZ 250 - Wikipedia

    en.wikipedia.org/wiki/Yamaha_XTZ_250

    The Yamaha XTZ 250 is a dual-sport motorcycle designed and produced by Yamaha Motor do Brasil, starting in 2006. It is a variant of the XT250 , which is marketed worldwide, and derives from the 1975 XT500 model, which established a successful range of dual-sport motorcycles, including the XT600 Ténéré, that greatly contributed to Yamaha's image.