Yamaha XJ900

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Yamaha XJ900
Also called XJ900F, XJ900S Diversion, XJ 900 S Diversion, XJ 900 S, XJ 900 F, XJ 900, XJ900S, Seca
Production 1983 - 2003
Class Touring
in-line four, four-stroke
Bore / Stroke 68.5mm x 60.5mm
Compression ratio 9.2:1
Top Speed 127 mph (205 km/h)
Horsepower 87.57 HP (65.3 KW) @ 8250RPM
Torque 61.52 ft/lbs (83.4 Nm) @ 7000RPM
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)
Length 87.8 inches (2230 mm)
Width 29.53 inches (750 mm)
Height 51.18 inches (1300 mm)
Seat Height 31.3 inches (795 mm)
Weight 526.9 pounds (239.0 Kg) (dry), 280.0 kg (wet)
Oil Filter K&N KN-144
Recommended Oil Yamalube 10w-40
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

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[edit | edit source]

1983 to 1984 - 853cc 31A

1984 to 1990 - 891cc 58L

1990 to 1994 - 891cc 4BB1

Engine[edit | edit source]

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[edit | edit source]

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

Chassis[edit | edit source]

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.

1983 XJ900RK[edit | edit source]

1985 - 1994 Yamaha XJ 900[edit | edit source]

In Media[edit | edit source]