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Yamaha Specifications

Yamaha SR250 (1980-82)

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Yamaha SR250 (1980-82)

At a glance

Capacity
239 cc / 15.2 cu-in
Power
21 hp / 15.7 kW @ 7700 rpm
Torque
18.7 ft-lb / T25.5 Nm @ 7000 rpm
Seat height
740 mm / 29.0 in

The full picture.

The Yamaha SR250 motorcycle was produced from 1980 to 1982 and featured a four-stroke, single-cylinder, SOHC, two-valve engine with a capacity of 239cc. The engine was cooled by air and had a compression ratio of 8.9:1. The bike had a 34mm Mikuni carburettor and was ignited electronically. The electric starter produced a maximum power output of 21 horsepower (15.7 kW) at 7700 rpm and a maximum torque of 18.7 ft-lb (T25.5 Nm) at 7000 rpm.

The motorcycle had a five-speed transmission, and the final drive was a chain. The front suspension was 32mm telescopic forks, and the rear suspension had dual shock 5-way preload adjustment. Both front and rear brakes were drum brakes. The front and rear tyres were 3.00-18 and 120/90-16 respectively. The wheelbase was 1340mm (52.75 in), and the seat height was 740mm (29.0 in).

The Yamaha SR250 had a wet weight of 130 kg (287 lbs) and a fuel capacity of 10.8 litres (2.7 US gallons). The bike had an average fuel consumption of 70 miles per gallon and could reach a top speed of 89 mph (143.2 km/h). In standing 1/4 mile, the bike took 16.3 seconds to complete. Overall, the Yamaha SR250 was a dependable and efficient motorcycle that provided a comfortable riding experience.


Technical specifications:

Make Model: Yamaha SR 250

Motorcycle technical specifications
Year1980 – 82
EngineFour stroke, single cylinder, SOHC, 2 valve
Capacity239 cc / 15.2 cu-in
Bore x Stroke73.5 x 56.5 mm
Cooling SystemAir cooled
Compression Ratio8.9:1
Induction34mm Mikuni carburettor
IgnitionElectronically
StartingElectric
Max Power21 hp / 15.7 kW @ 7700 rpm
Max Torque18.7 ft-lb / T25.5 Nm @ 7000 rpm
Transmission5 Speed
Final DriveChain
Front Suspension32mm Telescopic forks
Rear SuspensionDual shock 5-way preload adjustment.
Front BrakesDrum
Rear BrakesDrum
Front Tyre3.00-18
Rear Tyre120/90-16
Wheelbase1340 mm / 52.75 in
Seat Height740 mm / 29.0 in
Wet Weight130 kg 287 lbs
Fuel Capacity10.8 Litres / 2.7 US gal
Consumption Average70 mpg
Standing 1/4 Mile16.3 sec
Top Speed89 mph / 143.2 km/h