Yamaha XS650 (1980-81)

The Yamaha XS650/TX650 motorcycle was produced from 1980-81 and is equipped with a four stroke, parallel twin cylinder, SOHC engine with a capacity of 653cc/39.8cu in. The engine has 2 valves per cylinder, a compression ratio of 8.4:1, and is air cooled with wet sump lubrication. Induction is provided through 2 Mikuni BS34 carburetors, with battery and induction coil ignition and both electric and kickstarting options. The maximum power output is 39.5kW/53 horsepower at 7200 RPM and the maximum torque is 54Nm/5.5kgf-m/39.8lb-ft at 6800 RPM. The transmission is a 5-speed with final chain drive, and the front suspension is telescopic forks while the rear suspension has dual shock absorbers. The front brakes are twin hydraulic discs, and the rear brakes are drum. The fuel tank capacity is 15 liters (4.0 US gallons) with an average consumption of 5.0 L/100 km (20 km/l or 47 US mpg), and the motorcycle can carry 2.5 liters (2.6 US quarts) of oil. The XS650/TX650 has a top speed of 185 km/h (115 mph) and has a dry weight of 191 kg (420 lbs) and a wet weight of 217 kg (478 lbs). The dimensions of the vehicle are as follows: length: 2175 mm (85.6″), width: 780 mm (30.7″), height: 1090 mm (42.9″), wheelbase: 1435 mm (56.5″), ground clearance: 150 mm (5.5″), and seat height: 810 mm (31.9″).

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Technical specifications:

Make Model: Yamaha XS 650 / TX 650

Year: 1980 – 81

Engine: Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder.

Capacity: 653 cc / 39.8 cu in

Bore x Stroke: 75 x 74 mm

Compression Ratio: 8.4:1

Cooling System: Air cooled

Lubrication: Wet sump

Induction: 2 x Mikuni BS34 carburetors

Ignition: Battery, induction coil

Starting: Electric and kick

Max Power: 39.5 kW / 53 hp @ 7200 rpm

Max Torque: 54 Nm / 5.5 kgf-m / 39.8 lb-ft @ 6800 rpm

Transmission: 5 Speed

Final Drive: Chain

Front Suspension: Telescopic forks

Rear Suspension: Dual shock absorbers

Front Brakes: Twin hydraulic discs, 267 mm

Rear Brakes: Drum

Front Tyre: 3.50H-19 4PR

Rear Tyre: 4.00H-18 4PR

Dimensions: Length: 2175 mm / 85.6″Width: 780 mm / 30.7″Height: 1090 mm / 42.9″

Wheelbase: 1435 mm / 56.5″

Ground Clearance: 150 mm / 5.5″

Seat Height: 810 mm / 31.9″

Dry Weight: 191 kg / 420 lbs

Wet Weight: 217 kg / 478 lbs

Fuel Capacity: 15 Litres / 4.0 US gal

Average Consumption: 5.0 L/100 km / 20 km/l / 47 US mpg

Oil Capacity: 2.5 Litres / 2.6 US qts

Top Speed: 185 km/h / 115 mph