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The YZ125 has a 124 cc (7.6 cu in) reed valve-inducted two-stroke engine. It was air cooled from 1974 to 1980, and liquid cooled since 1981. It has a Mikuni 38 mm TMX series carburetor. [6] The engine produces 35 hp (26 kW). [1] The YZ125 has been built with five- or six-speed manual sequential gearbox depending on model year.
3 Third generation: (2019–2022) Toggle Third generation: (2019–2022) subsection. ... There is a small 2021 update, that adds a vapor canister to the fuel system, ...
YDS-3 (1964) 246 cc, two-stroke, parallel-twin, it used the world's first oil injection lubrication system in a 2-stroke engine. [2] DT-1 (1968) Yamaha's first true off-road motorcycle. [1] XS-1 (1970) Yamaha's first four-stroke engine motorcycle (650 cc twin). [3] YZ Monocross (1975) First production motocross bike with a single rear shock. [3]
The Yamaha YZ450F is a four-stroke racing motocross bike built by Yamaha Motor Corporation.It was the successor to the previous YZ426F which was discontinued in 2003. It is credited by Cycle World and Dirt Rider magazines as the bike that started the four-stroke dirt bike revolution.
For low-speed testing at Cornwall Airport Newquay in 2017, the car was fitted with four runway wheels based on those of an English Electric Lightning fighter jet with refurbished original tyres. [53] These were replaced for the high-speed test runs in the desert in South Africa in 2019 by four 90-centimetre (35 in) diameter wheels weighing 95 ...
During its production run, it underwent three major engineering makeovers. However, the core features were retained. These were: a sophisticated long-travel suspension, a liquid-cooled, two-stroke motor, and a fully-manual five-speed transmission (for 1985–1986 models), and a six-speed transmission (for the '87–'92 models).
The fuel injection system is similar to the ones installed on most Yamaha bikes, and uses a 24mm injector. The exhaust manifold comes equipped with an O2 sensor. The rated power output is close to 8 bhp (6.0 kW). [citation needed] After the break in period, the Zuma 125 can achieve a maximum speed of around 61 mph (98 km/h). [citation needed]
Most modern cars are designed to run on gasoline are capable of running with a blend from 10% up to 15% ethanol mixed into gasoline . With a small amount of redesign, gasoline-powered vehicles can run on ethanol concentrations as high as 85% ( E85 ), the maximum set in the United States and Europe due to cold weather during the winter, [ 52 ...