The Yamaha XJ900 is a motorcycle manufactured by

Yamaha Yamaha may refer to: * Yamaha Corporation, a Japanese company with a wide range of products and services, established in 1887. The company is the largest shareholder of Yamaha Motor Company (below). ** Yamaha Music Foundation, an organization estab ...

from 1983. It was a development of the original

XJ model, the XJ 650, which was the foundation for the entire XJ series. In its original incarnation, the XJ900 had an

air-cooled Air-cooled engines rely on the circulation of air directly over heat dissipation fins or hot areas of the engine to cool them in order to keep the engine within operating temperatures. In all combustion engines, a great percentage of the heat ge ...

double overhead camshaft An overhead camshaft (OHC) engine is a piston engine where the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combustion cha ...

, 4-stroke,

4-cylinder The engine configuration describes the fundamental operating principles by which internal combustion engines are categorized. Piston engines are often categorized by their cylinder layout, valves and camshafts. Wankel engines are often categorize ...

, 8-valve engine. Originally fitted with a handlebar mounted bikini fairing, its handling came in for criticism. This was quickly replaced with a frame mounted upper fairing and

retrofitted Retrofitting is the addition of new technology or features to older systems. Retrofits can happen for a number of reasons, for example with big capital expenditures like naval vessels, military equipment or manufacturing plants, businesses or go ...

to all models. The 1983 XJ900 came with anti-dive front forks, shaft drive and has triple disc brakes (2 front, 1 rear). A revised version was launched in 1984 and displaced . Aside from the engine capacity increase it was equipped with more conventional forks than its predecessor and a belly pan came as standard. The increase in engine capacity meant the

carburettors A carburetor (also spelled carburettor) is a device used by an internal combustion engine to control and mix air and fuel entering the engine. The primary method of adding fuel to the intake air is through the venturi tube in the main meterin ...

went up from 35 mm to 36 mm. Fuel capacity is 22 litres and the transmission is a 5-speed. Aside from these changes it was nearly identical to the original and was manufactured until 1994. The XJ900 Diversions were their replacements.

Model engine and frame codes

1983 to 1984 - 853 cc 31A 1984 to 1990 - 891 cc 58L 1990 to 1994 - 891 cc 4BB1

References

XJ900 Motorcycles introduced in 1983 Standard motorcycles {{Motorcycle-stub

Model engine and frame codes

See also

References