1977 Yamaha XS 650 / XS 650D

Make Model	Yamaha XS 650 / XS 650D
Year	1977
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	2x 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 in Width: 780 mm / 30.7 in Height: 1090 mm / 42.9 in
Wheelbase	1435 mm / 56.5 in
Ground Clearance	150 mm / 5.5 in
Seat Height	810 mm / 31.9 in
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