Yamaha xs650 (1978)

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The Yamaha XS 650E is a 1978 motorcycle with a four stroke, parallel twin cylinder engine and a capacity of 653 cc. It has a compression ratio of 8.4:1 and is cooled by air. The motorcycle has a wet sump lubrication system and is operated by 2 Mikuni BS38 carburetors. It features an electric and kick start system and has a maximum power output of 39.5 kW / 53 hp at 7200 rpm, with a maximum torque of 54 Nm / 5.5 kgf-m / 39.8 lb-ft at 6800 rpm. The five-speed transmission is combined with a chain final drive. The front suspension consists of telescopic forks and the rear suspension is a dual shock absorber system. The front brakes are twin hydraulic discs with a size of 267 mm while the rear brake is a drum. The front tyre is 3.50H-19 4PR and the rear tyre is 4.00H-18 4PR. The motorcycle has a length of 2175 mm, a width of 780 mm, and a height of 1090 mm. The wheelbase measures 1435 mm, the ground clearance is 150 mm, and the dry weight is 191 kg / 420 lbs. The fuel capacity is 15 litres / 4.0 US gal and the average consumption is 5.0 L/100 km / 20 km/l / 47 US mpg. The oil capacity is 2.5 litres / 2.6 US qts and the top speed is 185 km/h / 115 mph.

Technical specifications:

Make Model: Yamaha XS 650E

Year: 1978


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 BS38 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

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