Yamaha XJ900

**Yamaha XJ900**
Manufacturer	Yamaha
Also called	XJ900F, XJ900S Diversion, XJ 900 S Diversion, XJ 900 S, XJ 900 F, XJ 900, XJ900S
Production	1983 - 2003
Class	Touring
Engine	in-line four, four-stroke
Bore / Stroke	68.5mm x 60.5mm
Compression ratio	9.2:1
Top speed	127 mph (205 km/h)
Horse Power	87.57 HP (65.3 KW) @ 8250RPM
Torque	61.52 ft/lbs (83.4 Nm) @ 7000RPM
Battery	10.0:1
Transmission	Gear box: 5-speed ; Final Drive: shaft drive (cardan) ; Clutch: Wet multi-discs ;
Suspension	Front: Air Assisted Telescopic Forks ; Rear: Twin Strut Gas Assisted, 5 Spring Preload And 12 Damping Adjustable
Brakes	Front: dual disc ; Rear: single disc
Front Tire	120/70-17 58v
Rear Tire	130/70-18 63h
Wheelbase	59.25 inches (1505 mm)
Dimensions	L 87.8 inches (2230 mm); W 29.53 inches (750 mm); H 51.18 inches (1300 mm);
Seat height	31.3 inches (795 mm)
Weight	526.9 pounds (239.0 Kg) (dry), 280.0 kg (wet)
Fuel capacity	6.34 Gallon (24.00 Liters)
Fuel consumption	0.64 liters/100 km (156.3 km/l or 367.53 mpg)
Manuals	Service Manual
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The Yamaha XJ900S Diversion was a in-line four, four-stroke Touring motorcycle produced by Yamaha between 1983 and 2003. It could reach a top speed of 127 mph (205 km/h). Max torque was 61.52 ft/lbs (83.4 Nm) @ 7000 RPM. Claimed horsepower was 87.57 HP (65.3 KW) @ 8250 RPM.

The Yamaha XJ900 was born out of the original Yamaha XJ model motorcycle, the XJ650, which was the foundation for the whole XJ series.

Yamaha XJ900 31A

In its original incarnation launched in 1983, the XJ900 had an air-cooled, double overhead camshaft, 853cc 4-stroke, 4 cylinder, 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 to all models. The XJ900 came with anti-dive front forks, shaft drive and triple disc brakes.

A revised version was launched in 1984 and displaced 891cc. Aside from the engine capacity increase it was equipped with more conventional forks than it’s predecessor and a belly pan came as standard. The increase in engine capacity meant the carburettors went up from 35mm to 36mm. Aside from these changes it was nearly identical to the original and was manufactured until 1994.

The XJ900 Diversion is its replacement.

Model engine and frame codes

1983 to 1984 - 853cc 31A

1984 to 1990 - 891cc 58L

1990 to 1994 - 891cc 4BB1

Engine

The engine was a air cooled in-line four, four-stroke. A 68.5mm bore x 60.5mm stroke result in a displacement of just 892.0 cubic centimeters. Fuel was supplied via a double overhead cams/twin cam (dohc).

Drive

The bike has a 5-speed transmission. Power was moderated via the Wet multi-discs.

Chassis

It came with a 120/70-17 58v front tire and a 130/70-18 63h rear tire. Stopping was achieved via dual disc in the front and a single disc in the rear. The front suspension was a Air Assisted Telescopic Forks while the rear was equipped with a Twin Strut Gas Assisted, 5 Spring Preload And 12 Damping Adjustable. The XJ900S Diversion was fitted with a 6.34 Gallon (24.00 Liters) fuel tank. The bike weighed just 526.9 pounds (239.0 Kg). The wheelbase was 59.25 inches (1505 mm) long.