Yamaha TX650 III (1973-74)

The Yamaha TX650 III was a motorcycle produced from 1973-74 with a four-stroke, parallel twin cylinder, SOHC engine and a 653cc capacity. The bike had a compression ratio of 8.4:1 and was air cooled with wet sump lubrication. It utilized 2 Mikuni carburetors and a battery induction coil for ignition, and could be started with a kick. The maximum power output was 39.5 kW/53 hp at 7200 rpm, and the maximum torque was 54 Nm/5.5 kgf-m/39.8 lb-ft at 6800 rpm. The bike had a five-speed transmission and used a chain for the final drive. Its front suspension utilized telescopic forks, while the rear suspension had dual shock absorbers. The front brake was a single disc, and the rear brake was a drum. The bike had a length of 2175 mm, a width of 905 mm, and a height of 1135 mm, with a wheelbase of 1410 mm and a ground clearance of 150 mm. It had a dry weight of 191kg and a fuel capacity of 12.5 litres. The average fuel consumption was 5.0 L/100 km, and the oil capacity was 3.0 litres. The bike had a top speed of 185 km/h or 115 mph.


Technical specifications:

Make Model: Yamaha XS 650 / TX 650

Year: 1973 – 74


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 carburetors
Ignition: Battery, induction coil
Starting: 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: Single disc
Rear Brakes: Drum
Front Tyre: 3.50-19
Rear Tyre: 4.00-18
Dimensions: Length: 2175 mm / 85.6″Width: 905 mm / 35.0″Height: 1135 mm / 44.7″
Wheelbase: 1410 mm / 55.5″
Ground Clearance: 150 mm / 5.5″
Dry Weight: 191 kg / 420 lbs
Fuel Capacity: 12.5 Litres / 3.3 US gal
Average Consumption: 5.0 L/100 km / 20 km/l / 47 US mpg
Oil Capacity: 3.0 Litres / 3.2 US qts
Top Speed: 185 km/h / 115 mph

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