Yamaha DT250: history, specs, pictures
Manufacturer | Yamaha |
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Also called | DT 250F, DT250F, DT 250 MX, DT 250, DT250MX |
Production | 1971 - 1982 |
Class | Trail |
Engine | single cylinder, two-stroke |
Bore / Stroke | 70.0mm x 64.0mm |
Top speed | 68 mph (109 km/h) |
Horse Power | 15.69 HP (11.7 KW) @ 5400RPM |
Torque | 12.91 ft/lbs (17.5 Nm) @ 6500RPM |
Fuel system | carburetor |
Ignition type | contact breaker point |
Sparkplug | NGK BEES '74-75 , 76-79 |
Battery | YUASA 6N6-3B-1 76-79 YUASA 6N4B-2A-3 '74-75 |
Transmission | Gear box: 5-speed Final Drive: chain |
Brakes | Front: expanding brake Rear: expanding brake |
Front Tire | 3.00-21 |
Rear Tire | 4.00-18 |
Weight | 244.93 pounds (111.1 Kg) (dry), 135.0 kg (wet) |
Fuel capacity | 2.38 Gallon (9.00 Liters) |
Fuel consumption | 2.50 litres/100 km (40.0 km/l or 94.09 mpg) |
Competition | Harley-Davidson SX250 Kawasaki KE250B Yamaha DT250 Honda XL250 |
Manuals | Service Manual |
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The Yamaha DT250MX was a single cylinder, two-stroke Trail motorcycle produced by Yamaha between 1972 and 1982. It could reach a top speed of 68 mph (109 km/h). Max torque was 12.91 ft/lbs (17.5 Nm) @ 6500 RPM. Claimed horsepower was 15.69 HP (11.7 KW) @ 5400 RPM.
Engine
The engine was a air cooled single cylinder, two-stroke. A 70.0mm bore x 64.0mm stroke result in a displacement of just 246.0 cubic centimeters. Fuel was supplied via a membrane.
Drive
The bike has a 5-speed transmission. Power was moderated via the wet plate.
Chassis
It came with a 3.00-21 front tire and a 4.00-18 rear tire. Stopping was achieved via expanding brake in the front and a expanding brake in the rear. The DT250MX was fitted with a 2.38 Gallon (9.00 Liters) fuel tank. The bike weighed just 244.93 pounds (111.1 Kg).
1971
1972
1975 DT250B
1978
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