Yamaha XS650 F (1979)

The Yamaha XS650 F is a four-stroke, parallel twin cylinder motorcycle with a capacity of 653 cc. It has a compression ratio of 8.4:1 and is air-cooled with a wet sump lubrication system. The induction is through two Mikuni BS38 carburetors, and it has battery induction coil ignition with both electric and kick starting. The bike produces a maximum power of 39.5 kW / 53 hp at 7200 rpm and a maximum torque of 54 Nm / 5.5 kgf-m / 39.8 lb-ft at 6800 rpm. It has a 5-speed transmission and chain final drive. The front suspension is telescopic forks, and the rear suspension includes dual shock absorbers. The front brakes are twin hydraulic discs, 267 mm, and the rear brakes are drum. The Yamaha XS650 F has a length of 2175 mm / 85.6″ and a width of 780 mm / 30.7″ with a height of 1090 mm / 42.9″. The wheelbase is 1435 mm / 56.5″ with ground clearance of 150 mm / 5.5″ and a seat height of 810 mm / 31.9″. The dry weight of the motorcycle is 191 kg / 420 lbs, while the wet weight is 217 kg / 478 lbs with a fuel capacity of 15 litres / 4.0 US gal. It has an average consumption of 5.0 L/100 km / 20 km/l / 47 US mpg with an oil capacity of 2.5 litres / 2.6 US qts. Finally, it has a top speed of 185 km/h / 115 mph.

Technical specifications:

Make Model: Yamaha XS 650F

Year: 1979
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